![Incenselonghua](https://upload.wikimedia.org/wikipedia/commons/c/cb/Incenselonghua.jpg)
Incense is aromatic
biotic material
Biotic material or biological derived material is any material that originates from living organisms. Most such materials contain carbon and are capable of decay.
The earliest life on Earth arose at least 3.5 billion years ago.Schopf, JW, Kudr ...
that releases fragrant smoke when burnt. The term is used for either the material or the aroma. Incense is used for aesthetic reasons, religious
worship
Worship is an act of religious devotion usually directed towards a deity. It may involve one or more of activities such as veneration, adoration, praise, and praying. For many, worship is not about an emotion, it is more about a recogni ...
,
aromatherapy
Aromatherapy is based on the usage of aromatic materials including essential oils and other aroma compounds, with claims for improving psychological and physical well-being. It is offered as a complementary therapy or as a form of alternative ...
,
meditation
Meditation is a practice in which an individual uses a technique – such as mindfulness, or focusing the mind on a particular object, thought, or activity – to train attention and awareness, and achieve a mentally clear and emotionally calm ...
, and ceremony. It may also be used as a simple deodorant or
insect repellent
An insect repellent (also commonly called "bug spray") is a substance applied to skin, clothing, or other surfaces to discourage insects (and arthropods in general) from landing or climbing on that surface. Insect repellents help prevent and cont ...
.
Incense is composed of aromatic plant materials, often combined with
essential oil
An essential oil is a concentrated hydrophobic liquid containing volatile (easily evaporated at normal temperatures) chemical compounds from plants. Essential oils are also known as volatile oils, ethereal oils, aetheroleum, or simply as the o ...
s. The forms taken by incense differ with the underlying culture, and have changed with advances in technology and increasing number of uses.
Incense can generally be separated into two main types: "indirect-burning" and "direct-burning". Indirect-burning incense (or "non-combustible incense") is not capable of burning on its own, and requires a separate heat source. Direct-burning incense (or "combustible incense") is lit directly by a flame and then fanned or blown out, leaving a glowing
ember
An ember, also called a hot coal, is a hot lump of smouldering solid fuel, typically glowing, composed of greatly heated wood, coal, or other carbon-based material. Embers (hot coals) can exist within, remain after, or sometimes preced ...
that smoulders and releases a smoky fragrance. Direct-burning incense is either a paste formed around a bamboo stick, or a paste that is extruded into a stick or cone shape.
History
The word ''incense'' comes from
Latin
Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
meaning 'to burn'.
![Egyptian - Egyptian Incense Burner - Walters 54498 - Side](https://upload.wikimedia.org/wikipedia/commons/c/c4/Egyptian_-_Egyptian_Incense_Burner_-_Walters_54498_-_Side.jpg)
Combustible bouquets were used by the
ancient Egyptians, who employed incense in both pragmatic and mystical capacities. The purpose of the usage of incense stick varies; some people use it for the duration of meditation and rituals, even as some use it to kill insects. Incense was burnt to counteract or obscure malodorous products of human habitation, but was widely perceived to also deter malevolent demons and appease the
gods
A deity or god is a supernatural being who is considered divine or sacred. The ''Oxford Dictionary of English'' defines deity as a god or goddess, or anything revered as divine. C. Scott Littleton defines a deity as "a being with powers greater ...
with its pleasant aroma.
[ Resin balls were found in many ]prehistoric Egypt
Prehistoric Egypt and Predynastic Egypt span the period from the earliest human settlement to the beginning of the Early Dynastic Period around 3100 BC, starting with the first Pharaoh, Narmer for some Egyptologists, Hor-Aha for others, with ...
ian tombs in El Mahasna, giving evidence for the prominence of incense and related compounds in Egyptian antiquity. One of the oldest extant incense burners originates from the 5th dynasty
The Fifth Dynasty of ancient Egypt (notated Dynasty V) is often combined with Dynasties III, IV and VI under the group title the Old Kingdom. The Fifth Dynasty pharaohs reigned for approximately 150 years, from the early 25th century BC until ...
. The Temple of Deir-el-Bahari in Egypt contains a series of carvings that depict an expedition for incense.
The Babylonians used incense while offering prayers to divining oracle
An oracle is a person or agency considered to provide wise and insightful counsel or prophetic predictions, most notably including precognition of the future, inspired by deities. As such, it is a form of divination.
Description
The word ...
s. Incense spread from there to Greece and Rome.
Incense burners have been found in the Indus Civilization
The Indus Valley Civilisation (IVC), also known as the Indus Civilisation was a Bronze Age civilisation in the northwestern regions of South Asia, lasting from 3300 BCE to 1300 BCE, and in its mature form 2600 BCE to 1900 ...
(3300–1300 BCE). Evidence suggests oils were used mainly for their aroma. This was the first usage of subterranean plant parts in incense.[ New herbs like Sarsaparilla seeds, ]frankincense
Frankincense (also known as olibanum) is an aromatic resin used in incense and perfumes, obtained from trees of the genus '' Boswellia'' in the family Burseraceae. The word is from Old French ('high-quality incense').
There are several species ...
, and cypress
Cypress is a common name for various coniferous trees or shrubs of northern temperate regions that belong to the family Cupressaceae. The word ''cypress'' is derived from Old French ''cipres'', which was imported from Latin ''cypressus'', the l ...
were used by Indians.[
The oldest source on incense is the ]Vedas
upright=1.2, The Vedas are ancient Sanskrit texts of Hinduism. Above: A page from the '' Atharvaveda''.
The Vedas (, , ) are a large body of religious texts originating in ancient India. Composed in Vedic Sanskrit, the texts constitute th ...
, specifically the Atharva-veda and the Rigveda. Incense-burning was used both to create pleasing aromas and a medicinal tool. Its use in medicine is considered the first phase of Ayurveda, which uses incense as an approach to healing. The practice of incense as a healing tool was assimilated into the religious practices of the time. As Hinduism matured and Buddhism was founded in India, incense became an integral part of Buddhism as well. Around 200 CE, a group of wandering Buddhist monks introduced incense stick making to China. Some incense, depending on the contents, may also act as organic insect repellent.
At around 2000 BCE, Ancient China
The earliest known written records of the history of China date from as early as 1250 BC, from the Shang dynasty (c. 1600–1046 BC), during the reign of king Wu Ding. Ancient historical texts such as the '' Book of Documents'' (early chapt ...
began the use of incense in the religious sense, namely for worship. Incense was used by Chinese cultures from Neolithic times and became more widespread in the Xia, Shang
The Shang dynasty (), also known as the Yin dynasty (), was a Chinese royal dynasty founded by Tang of Shang (Cheng Tang) that ruled in the Yellow River valley in the second millennium BC, traditionally succeeding the Xia dynasty and ...
, and Zhou dynasties. The earliest documented use of incense comes from the ancient Chinese, who employed incense composed of herbs and plant products (such as cassia, cinnamon
Cinnamon is a spice obtained from the inner bark of several tree species from the genus '' Cinnamomum''. Cinnamon is used mainly as an aromatic condiment and flavouring additive in a wide variety of cuisines, sweet and savoury dishes, breakf ...
, styrax, and sandalwood
Sandalwood is a class of woods from trees in the genus '' Santalum''. The woods are heavy, yellow, and fine-grained, and, unlike many other aromatic woods, they retain their fragrance for decades. Sandalwood oil is extracted from the woods for ...
) as a component of numerous formalized ceremonial rites. Incense usage reached its peak during the Song dynasty
The Song dynasty (; ; 960–1279) was an imperial dynasty of China that began in 960 and lasted until 1279. The dynasty was founded by Emperor Taizu of Song following his usurpation of the throne of the Later Zhou. The Song conquered the res ...
with numerous buildings erected specifically for incense ceremonies.
Brought to Japan in the 6th century by Korean Buddhist monks
A ''bhikkhu'' (Pali: भिक्खु, Sanskrit: भिक्षु, ''bhikṣu'') is an ordained male in Buddhist monasticism. Male and female monastics (" nun", ''bhikkhunī'', Sanskrit ''bhikṣuṇī'') are members of the Sangha (Buddhist ...
, who used the mystical aromas in their purification rites, the delicate scents of Koh (high-quality Japanese incense) became a source of amusement and entertainment with nobles in the Imperial Court during the Heian Era 200 years later. During the 14th-century Ashikaga shogunate
The , also known as the , was the feudal military government of Japan during the Muromachi period from 1336 to 1573.Nussbaum, Louis-Frédéric. (2005)"''Muromachi-jidai''"in ''Japan Encyclopedia'', p. 669.
The Ashikaga shogunate was establi ...
, a samurai
were the hereditary military nobility and officer caste of medieval and early-modern Japan from the late 12th century until their abolition in 1876. They were the well-paid retainers of the '' daimyo'' (the great feudal landholders). They ...
warrior might perfume his helmet and armor with incense to achieve an aura of invincibility (as well as to make a noble gesture to whoever might take his head in battle). It wasn't until the Muromachi period
The is a division of Japanese history running from approximately 1336 to 1573. The period marks the governance of the Muromachi or Ashikaga shogunate (''Muromachi bakufu'' or ''Ashikaga bakufu''), which was officially established in 1338 by ...
during the 15th and 16th century that incense appreciation (, ) spread to the upper and middle classes of Japanese society.
Composition
A variety of materials have been used in making incense. Historically there has been a preference for using locally available ingredients. For example, sage and cedar were used by the indigenous peoples of North America. Trading in incense materials comprised a major part of commerce along the Silk Road
The Silk Road () was a network of Eurasian trade routes active from the second century BCE until the mid-15th century. Spanning over 6,400 kilometers (4,000 miles), it played a central role in facilitating economic, cultural, political, and rel ...
and other trade routes, one notably called the Incense Route
The Incense Trade Route was an ancient network of major land and sea trading routes linking the Mediterranean world with eastern and southern sources of incense, spices and other luxury goods, stretching from Mediterranean ports across the Le ...
.
Local knowledge and tools were extremely influential on the style, but methods were also influenced by migrations of foreigners, such as clergy and physicians.
Combustible base
The combustible base of a direct burning incense mixture not only binds the fragrant material together but also allows the produced incense to burn with a self-sustained ember, which propagates slowly and evenly through an entire piece of incense with such regularity that it can be used to mark time. The base is chosen such that it does not produce a perceptible smell. Commercially, two types of incense base predominate:
*Fuel
A fuel is any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy b ...
and oxidizer
An oxidizing agent (also known as an oxidant, oxidizer, electron recipient, or electron acceptor) is a substance in a redox chemical reaction that gains or " accepts"/"receives" an electron from a (called the , , or ). In other words, an oxi ...
mixtures: Charcoal
Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, ...
or wood
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin ...
powder provides the fuel for combustion while an oxidizer such as sodium nitrate
Sodium nitrate is the chemical compound with the formula . This alkali metal nitrate salt is also known as Chile saltpeter (large deposits of which were historically mined in Chile) to distinguish it from ordinary saltpeter, potassium nitrate. ...
or potassium nitrate
Potassium nitrate is a chemical compound with the chemical formula . This alkali metal nitrate salt is also known as Indian saltpetre (large deposits of which were historically mined in India). It is an ionic salt of potassium ions K+ and ...
sustains the burning of the incense. Fragrant materials are added to the base prior to shaping, as in the case of powdered incense materials, or after, as in the case of essential oils. The formula for charcoal-based incense is superficially similar to black powder
Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, carbon (in the form of charcoal) and potassium nitrate (saltpeter). T ...
, though it lacks the sulfur
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formul ...
.
*Natural plant-based binders: Gums such as Gum Arabic
Gum arabic, also known as gum sudani, acacia gum, Arabic gum, gum acacia, acacia, Senegal gum, Indian gum, and by other names, is a natural gum originally consisting of the hardened sap of two species of the ''Acacia'' tree, '' Senegalia se ...
or Gum Tragacanth
Tragacanth is a natural gum obtained from the dried sap of several species of Middle Eastern legumes of the genus ''Astragalus'', including '' A. adscendens'', '' A. gummifer'', '' A. brachycalyx'', and '' A. tragacantha''. Some of these species ...
are used to bind the mixture together. Mucilaginous material, which can be derived from many botanical sources, is mixed with fragrant materials and water. The mucilage
Mucilage is a thick, gluey substance produced by nearly all plants and some microorganisms. These microorganisms include protists which use it for their locomotion. The direction of their movement is always opposite to that of the secretion of m ...
from the wet binding powder holds the fragrant material together while the cellulose
Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wa ...
in the powder combusts to form a stable ember when lit. The dry binding powder usually comprises about 10% of the dry weight in the finished incense. These include:
**''Makko'' (incense powder) made from the bark
Bark may refer to:
* Bark (botany), an outer layer of a woody plant such as a tree or stick
* Bark (sound), a vocalization of some animals (which is commonly the dog)
Places
* Bark, Germany
* Bark, Warmian-Masurian Voivodeship, Poland
Arts, e ...
of various trees in the genus ''Persea
''Persea'' is a genus of about 150 species of evergreen trees belonging to the laurel family, Lauraceae. The best-known member of the genus is the avocado, ''P. americana'', widely cultivated in subtropical regions for its large, edible fruit.
...
'' (such as ''Persea thunbergii'')
**''Xiangnan pi'' (made from the bark of trees of genus '' Phoebe'' such as ''Phoebe nanmu Phoebe or Phœbe may refer to:
__NOTOC__ People and characters
* Phoebe (given name), a list of people, mythological, biblical and fictional characters
*Phoebe (Greek myth), several characters
* Phoebe, an epithet of Artemis/ Diana and Selene/ Luna ...
'' or '' Persea zuihoensis''.
**''Jigit'': a resin based binder used in India
**''Laha'' or ''Dar'': bark based powders used in Nepal, Tibet, and other East Asian countries.
Typical compositions burn at a temperature between .
Types
Incense is available in various forms and degrees of processing. They can generally be separated into "direct-burning" and "indirect-burning" types. Preference for one form or another varies with culture, tradition, and personal taste. The two differ in their composition due to the former's requirement for even, stable, and sustained burning.
Indirect-burning
Indirect-burning incense, also called "non-combustible incense", is an aromatic material or combination of materials, such as resins, that does not contain combustible material and so requires a separate heat source. Finer forms tend to burn more rapidly, while coarsely ground or whole chunks may be consumed very gradually, having less surface area. Heat is traditionally provided by charcoal
Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, ...
or glowing embers. In the West, the best known incense materials of this type are the resins frankincense
Frankincense (also known as olibanum) is an aromatic resin used in incense and perfumes, obtained from trees of the genus '' Boswellia'' in the family Burseraceae. The word is from Old French ('high-quality incense').
There are several species ...
and myrrh
Myrrh (; from Semitic, but see '' § Etymology'') is a gum-resin extracted from a number of small, thorny tree species of the genus '' Commiphora''. Myrrh resin has been used throughout history as a perfume, incense and medicine. Myrrh m ...
, likely due to their numerous mentions in the Bible
The Bible (from Koine Greek , , 'the books') is a collection of religious texts or scriptures that are held to be sacred in Christianity
Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus ...
. Frankincense means "pure incense", though in common usage refers specifically to the resin of the boswellia
''Boswellia'' is a genus of trees in the order Sapindales, known for its fragrant resin. The biblical incense frankincense is an extract from the resin of the tree '' Boswellia sacra'', and is now produced also from '' B. frereana''.
Frankincens ...
tree.
*Whole: The incense material is burned directly in raw form on top of coal embers.
*Powdered or granulated: Incense broken into smaller pieces burns quickly and provides brief but intense odor.
*Paste: Powdered or granulated incense material is mixed with a sticky incombustible binder, such as dried fruit
In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering.
Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in partic ...
, honey
Honey is a sweet and viscous substance made by several bees, the best-known of which are honey bees. Honey is made and stored to nourish bee colonies. Bees produce honey by gathering and then refining the sugary secretions of plants (primar ...
, or a soft resin
In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on nat ...
and then formed to balls or small pastilles
A pastille is a type of sweet or medicinal pill made of a thick liquid that has been solidified and is meant to be consumed by light chewing and allowing it to dissolve in the mouth. The term is also used to describe certain forms of incense.
...
. These may then be allowed to mature in a controlled environment where the fragrances can commingle and unite. Much Arab
The Arabs (singular: Arab; singular ar, عَرَبِيٌّ, DIN 31635: , , plural ar, عَرَب, DIN 31635: , Arabic pronunciation: ), also known as the Arab people, are an ethnic group mainly inhabiting the Arab world in Western Asia, ...
ian incense, also called "Bukhoor" or "Bakhoor", is of this type, and Japan has a history of kneaded incense, called nerikō or awasekō, made using this method. Within the Eastern Orthodox
Eastern Orthodoxy, also known as Eastern Orthodox Christianity, is one of the three main branches of Chalcedonian Christianity, alongside Catholicism and Protestantism.
Like the Pentarchy of the first millennium, the mainstream (or " canonical ...
Christian tradition, raw frankincense is ground into a fine powder and then mixed with various sweet-smelling essential oils.
Direct-burning
Direct-burning incense, also called "combustible incense", is lit directly by a flame. The glowing ember on the incense will continue to smoulder and burn the rest of the incense without further application of external heat or flame. Direct-burning incense is either extruded
Extrusion is a process used to create objects of a fixed cross-sectional profile by pushing material through a die of the desired cross-section. Its two main advantages over other manufacturing processes are its ability to create very complex c ...
, pressed into forms, or coated onto a supporting material. This class of incense is made from a moldable substrate of fragrant finely ground (or liquid) incense materials and odourless binder. The composition must be adjusted to provide fragrance in the proper concentration and to ensure even burning. The following types are commonly encountered, though direct-burning incense can take nearly any form, whether for expedience or whimsy.
*Coil: Extruded and shaped into a coil without a core, coil incense can burn for an extended period, from hours to days, and is commonly produced and used in Chinese cultures.
*Cone: Incense in this form burns relatively quickly. Incense cones were invented in Japan in the 1800s.
*Cored stick: A supporting core of bamboo is coated with a thick layer of incense material that burns away with the core. Higher-quality variations have fragrant sandalwood
Sandalwood is a class of woods from trees in the genus '' Santalum''. The woods are heavy, yellow, and fine-grained, and, unlike many other aromatic woods, they retain their fragrance for decades. Sandalwood oil is extracted from the woods for ...
cores. This type of incense is commonly produced in India and China. When used in Chinese folk religion
Chinese folk religion, also known as Chinese popular religion comprehends a range of traditional religious practices of Han Chinese, including the Chinese diaspora. Vivienne Wee described it as "an empty bowl, which can variously be filled ...
, these are sometimes known as "joss sticks".
*Dhoop or solid stick: With no bamboo core, dhoop incense is easily broken for portion control. This is the most commonly produced form of incense in Japan and Tibet
Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...
.
*Powder: The loose incense powder used for making indirect burning incense is sometimes burned without further processing. Powder incense is typically packed into long trails on top of wood ash using a stencil and burned in special censers or incense clocks
The incense clock () is a timekeeping device that originated from China during the Song Dynasty (960-1279) and spread to neighboring East Asian countries such as Japan and Korea. The clocks' bodies are effectively specialized censers that hold ...
.
*Paper: Paper infused with resin or oils extracted from fragrant material, folded accordion style, is lit and blown out. Examples include Carta Aromatica d'Eritrea and Papier d'Arménie
Armenian paper is a type of incense that has been produced for centuries. The paper is infused with essences, fragrances or essential oils in order to achieve a perfuming or cleansing effect. Examples of Armenian paper include Papier d'Armén ...
.
*Rope
A rope is a group of yarns, plies, fibres, or strands that are twisted or braided together into a larger and stronger form. Ropes have tensile strength and so can be used for dragging and lifting. Rope is thicker and stronger than similarl ...
: The incense powder is rolled into paper sheets, which are then rolled into ropes, twisted tightly, then doubled over and twisted again, yielding a two-strand rope. The larger end is the bight, and may be stood vertically, in a shallow dish of sand or pebbles. The smaller (pointed) end is lit. This type of incense is easily transported and stays fresh for extremely long periods. It has been used for centuries in Tibet
Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa people, ...
and Nepal
Nepal (; ne, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne,
सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in South Asia. It is ma ...
.
Moxa tablets, which are disks of powdered mugwort used in Traditional Chinese medicine
Traditional Chinese medicine (TCM) is an alternative medical practice drawn from traditional medicine in China. It has been described as "fraught with pseudoscience", with the majority of its treatments having no logical mechanism of acti ...
for moxibustion
Moxibustion () is a traditional Chinese medicine therapy which consists of burning dried mugwort ('' wikt:moxa'') on particular points on the body. It plays an important role in the traditional medical systems of China, Japan, Korea, Vietna ...
, are not incenses; the treatment is by heat rather than fragrance.
Incense sticks may be termed joss sticks, especially in parts of East Asia
East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea ...
, South Asia
South Asia is the southern subregion of Asia, which is defined in both geographical and ethno-cultural terms. The region consists of the countries of Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka.;;;;; ...
and Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainland ...
. Among ethnic Chinese and Chinese-influenced communities these are traditionally burned at temples, before the threshold of a home or business, before an image of a religious divinity or local spirit, or in shrines, large and small, found at the main entrance of every village. Here the earth god is propitiated in the hope of bringing wealth and health to the village. They can also be burned in front of a door or open window as an offering to heaven
Heaven or the heavens, is a common religious cosmological or transcendent supernatural place where beings such as deities, angels, souls, saints, or venerated ancestors are said to originate, be enthroned, or reside. According to the belie ...
, or the devas
Devas may refer to:
* Devas Club, a club in south London
* Anthony Devas (1911–1958), British portrait painter
* Charles Stanton Devas (1848–1906), political economist
* Jocelyn Devas (died 1886), founder of the Devas Club
* Devas (band), ...
. The word "joss" is derived from the Latin ''deus'' (god) via the Portuguese ''deus'' through the Javanese ''dejos'', through Chinese pidgin English.
Production
The raw materials are powdered and then mixed together with a binder to form a paste, which, for direct burning incense, is then cut and dried into pellets. Incense of the Athonite Orthodox Christian tradition is made by powdering frankincense or fir resin, mixing it with essential oils. Floral fragrances are the most common, but citrus such as lemon is not uncommon. The incense mixture is then rolled out into a slab approximately thick and left until the slab has firmed. It is then cut into small cubes, coated with clay powder to prevent adhesion, and allowed to fully harden and dry. In Greece this rolled incense resin is called 'Moskolibano', and generally comes in either a pink or green colour denoting the fragrance, with pink being rose and green being jasmine.
Certain proportions are necessary for direct-burning incense:
*Oil content: an excess of oils may prevent incense from smoldering effectively. Resinous materials such as myrrh
Myrrh (; from Semitic, but see '' § Etymology'') is a gum-resin extracted from a number of small, thorny tree species of the genus '' Commiphora''. Myrrh resin has been used throughout history as a perfume, incense and medicine. Myrrh m ...
and frankincense
Frankincense (also known as olibanum) is an aromatic resin used in incense and perfumes, obtained from trees of the genus '' Boswellia'' in the family Burseraceae. The word is from Old French ('high-quality incense').
There are several species ...
are typically balanced with "dry" materials such as wood, bark and leaf powders.
*Oxidizer quantity: Too little oxidizer in gum-bound incense may prevent the incense from igniting, while too much will cause the incense to burn too quickly, without producing fragrant smoke.
*Binder: Water-soluble binders such as "makko" ensure that the incense mixture does not crumble when dry, dilute the mixture.
*Mixture density: Incense mixtures made with natural binders must not be combined with too much water in mixing, or over-compressed while being formed, which would result in either uneven air distribution or undesirable density in the mixture, causing the incense to burn unevenly, too slowly, or too quickly.
*Particulate size: The incense mixture has to be well pulverized with similarly sized particulates. Uneven and large particulates result in uneven burning and inconsistent aroma production when burned.
"Dipped" or "hand-dipped" direct-burning incense is created by dipping "incense blanks" made of unscented combustible dust into any suitable kind of essential or fragrance oil. These are often sold in the United States by flea-market and sidewalk vendors who have developed their own styles. This form of incense requires the least skill and equipment to manufacture, since the blanks are pre-formed in China or South East Asia.
Incense mixtures can be extruded or pressed into shapes. Small quantities of water are combined with the fragrance and incense base mixture and kneaded into a hard dough
Dough is a thick, malleable, sometimes elastic paste made from grains or from leguminous or chestnut crops. Dough is typically made by mixing flour with a small amount of water or other liquid and sometimes includes yeast or other leavenin ...
. The incense dough is then pressed into shaped forms to create ''cone'' and smaller ''coiled'' incense, or forced through a hydraulic
Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counte ...
press for ''solid stick'' incense. The formed incense is then trimmed and slowly dried. Incense produced in this fashion has a tendency to warp or become misshapen when improperly dried, and as such must be placed in climate-controlled rooms and rotated several times through the drying process.
Traditionally, the bamboo core of cored stick incense is prepared by hand from ''Phyllostachys heterocycla cv. pubescens'' since this species produces thick wood and easily burns to ashes in the incense stick. In a process known as "splitting the foot of the incense stick", the bamboo is trimmed to length, soaked, peeled, and split in halves until the thin sticks of bamboo have square cross sections of less than 3mm. This process has been largely replaced by machines in modern incense production.
In the case of cored incensed sticks, several methods are employed to coat the sticks cores with incense mixture:
*''Paste rolling'': A wet, malleable paste of incense mixture is first rolled into a long, thin coil, using a paddle. Then, a thin stick is put next to the coil and the stick and paste are rolled together until the stick is centered in the mixture and the desired thickness is achieved. The stick is then cut to the desired length and dried.
*''Powder-coating'': Powder-coating is used mainly to produce cored incense of either larger ''coil'' (up to in diameter) or ''cored stick'' forms. A bundle of the supporting material (typically thin bamboo or sandalwood slivers) is soaked in water or a thin water/glue mixture for a short time. The thin sticks are evenly separated, then dipped into a tray of incense powder consisting of fragrance materials and occasionally a plant-based binder. The dry incense powder is then tossed and piled over the sticks while they are spread apart. The sticks are then gently rolled and packed to maintain roundness while more incense powder is repeatedly tossed onto the sticks. Three to four layers of powder are coated onto the sticks, forming a thick layer of incense material on the stick. The coated incense is then allowed to dry in open air. Additional coatings of incense mixture can be applied after each period of successive drying. Incense sticks produced in this fashion and burned in temple
A temple (from the Latin ) is a building reserved for spiritual rituals and activities such as prayer and sacrifice. Religions which erect temples include Christianity (whose temples are typically called churches), Hinduism (whose temples ...
s of Chinese folk religion
Chinese folk religion, also known as Chinese popular religion comprehends a range of traditional religious practices of Han Chinese, including the Chinese diaspora. Vivienne Wee described it as "an empty bowl, which can variously be filled ...
can have a thickness between 2 and 4 millimeters.
*''Compression'': A damp powder is mechanically formed around a cored stick by compression, similar to the way uncored sticks are formed. This form is becoming more common due to the higher labor cost of producing powder-coated or paste-rolled sticks.
Burning incense
Indirect-burning incense is burned directly on top of a heat source or on a hot metal plate in a censer
A censer, incense burner, perfume burner or pastille burner is a vessel made for burning incense or perfume in some solid form. They vary greatly in size, form, and material of construction, and have been in use since ancient times throughout t ...
or thurible
A thurible (via Old French from Medieval Latin ) is a metal censer suspended from chains, in which incense is burned during worship services. It is used in Christian churches including the Roman Catholic, Eastern Orthodox, Assyrian Church of th ...
.
In Japan a similar censer called a is used by several Buddhist sects. The is usually made of brass, with a long handle and no chain. Instead of charcoal, powder is poured into a depression made in a bed of ash. The is lit and the incense mixture is burned on top. This method is known as (religious burning).
For direct-burning incense, the tip or end of the incense is ignited with a flame or other heat source until the incense begins to turn into ash at the burning end. The flame is then fanned or blown out, leaving the incense to smolder.
Cultural variations
Arabian
In most Arab
The Arabs (singular: Arab; singular ar, عَرَبِيٌّ, DIN 31635: , , plural ar, عَرَب, DIN 31635: , Arabic pronunciation: ), also known as the Arab people, are an ethnic group mainly inhabiting the Arab world in Western Asia, ...
countries, incense is burned in the form of scented chips or blocks called ( ar, بَخُورٌ ). Incense is used on special occasions like wedding
A wedding is a ceremony where two people are united in marriage. Wedding traditions and customs vary greatly between cultures, ethnic groups, religions, countries, and social classes. Most wedding ceremonies involve an exchange of marriage vo ...
s or on Fridays or generally to perfume the house. The is usually burned in a ( ar, مبخر or ), a traditional incense burner (censer
A censer, incense burner, perfume burner or pastille burner is a vessel made for burning incense or perfume in some solid form. They vary greatly in size, form, and material of construction, and have been in use since ancient times throughout t ...
) similar to the Somali . It is customary in many Arab countries to pass among the guests in the (, 'congregation'). This is done as a gesture of hospitality
Hospitality is the relationship between a guest and a host, wherein the host receives the guest with some amount of goodwill, including the reception and entertainment of guests, visitors, or strangers. Louis, chevalier de Jaucourt describes ...
.
Chinese
For over two thousand years, the Chinese have used incense in religious ceremonies, ancestor veneration
The veneration of the dead, including one's ancestors, is based on love and respect for the deceased. In some cultures, it is related to beliefs that the dead have a continued existence, and may possess the ability to influence the fortune of t ...
, traditional Chinese medicine
Traditional Chinese medicine (TCM) is an alternative medical practice drawn from traditional medicine in China. It has been described as "fraught with pseudoscience", with the majority of its treatments having no logical mechanism of acti ...
, and daily life. Agarwood ( zh , c=沉香 , p=chénxiāng , labels=no ) and sandalwood
Sandalwood is a class of woods from trees in the genus '' Santalum''. The woods are heavy, yellow, and fine-grained, and, unlike many other aromatic woods, they retain their fragrance for decades. Sandalwood oil is extracted from the woods for ...
( zh , c=檀香 , p=tánxiāng , labels=no) are the two most important ingredients in Chinese incense.
Along with the introduction of Buddhism in China
Chinese Buddhism or Han Buddhism ( zh, s=汉传佛教, t=漢傳佛教, p=Hànchuán Fójiào) is a Chinese form of Mahayana Buddhism which has shaped Chinese culture in a wide variety of areas including art, politics, literature, philosophy, ...
came calibrated incense sticks and incense clocks. The first known record is by poet Yu Jianwu (487–551): "By burning incense we know the o'clock of the night, With graduated candles we confirm the tally of the watches." The use of these incense timekeeping devices spread from Buddhist monasteries into Chinese secular society.
Incense-stick burning is an everyday practice in traditional Chinese religion. There are many different types of stick used for different purposes or on different festive days. Many of them are long and thin. Sticks are mostly coloured yellow, red, or more rarely, black. Thick sticks are used for special ceremonies, such as funerals. Spiral incense, with exceedingly long burn times, is often hung from temple ceilings. In some states, such as Taiwan, Singapore, or Malaysia, where they celebrate the Ghost Festival
The Ghost Festival, also known as the Zhongyuan Festival (traditional Chinese: 中元節; simplified Chinese: ) in Taoism and Yulanpen Festival () in Buddhism, is a traditional Taoist and Buddhist festival held in certain East Asian countrie ...
, large, pillar-like dragon incense sticks are sometimes used. These generate so much smoke and heat that they are only burned outside.
Chinese incense sticks for use in popular religion are generally odorless or only use the slightest trace of jasmine or rose, since it is the smoke, not the scent, which is important in conveying the prayers of the faithful to heaven. They are composed of the dried powdered bark of a non-scented species of cinnamon
Cinnamon is a spice obtained from the inner bark of several tree species from the genus '' Cinnamomum''. Cinnamon is used mainly as an aromatic condiment and flavouring additive in a wide variety of cuisines, sweet and savoury dishes, breakf ...
native to Cambodia, '' Cinnamomum cambodianum''. Inexpensive packs of 300 are often found for sale in Chinese supermarkets. Though they contain no sandalwood, they often include the Chinese character for sandalwood on the label, as a generic term for incense.
Highly scented Chinese incense sticks are used by some Buddhists. These are often quite expensive due to the use of large amounts of sandalwood, agarwood, or floral scents used. The sandalwood
Sandalwood is a class of woods from trees in the genus '' Santalum''. The woods are heavy, yellow, and fine-grained, and, unlike many other aromatic woods, they retain their fragrance for decades. Sandalwood oil is extracted from the woods for ...
used in Chinese incenses does not come from India, its native home, but rather from groves planted within Chinese territory. Sites belonging to Tzu Chi
Buddhist Tzu Chi Charity Foundation, known for short as the Tzu Chi Foundation ( zh, t=佛教慈濟慈善事業基金會, p=Fójiào Cí Jì Císhàn Shìyè Jījīn Huì, l=Buddhist Compassionate Relief Charity Foundation), is a Taiwanese in ...
, Chung Tai Shan, Dharma Drum Mountain
Dharma Drum Mountain (DDM; ) is an international Buddhist spiritual, cultural, and educational foundation founded by late Chan master Sheng-yen (1931 – 2009). The center focuses on educating the public in Buddhism with the goal of improving th ...
, Xingtian Temple
Xingtian Temple (; also Xingtian Gong or Hsing Tian Kong) is a popular temple in Zhongshan District, Taipei, Taiwan. This temple is devoted to Lord Guan, the Patron Deity of businessmen, military personnel and policeman. This temple is situa ...
, or City of Ten Thousand Buddhas do not use incense.
Indian
Incense sticks, also known as ( hi, अगरबत्ती) and joss sticks, in which an incense paste is rolled or moulded around a bamboo stick, are the main forms of incense in India. The bamboo method originated in India and is distinct from the Nepali/Tibetan and Japanese methods of stick making without bamboo cores.
The basic ingredients are the bamboo stick, the paste (generally made of charcoal dust and joss/jiggit/gum/tabu powder – an adhesive made from the bark of litsea glutinosa
''Litsea glutinosa'' is a rainforest tree in the laurel family, Lauraceae. Common names include soft bollygum, bolly beech, Bollywood, bollygum, brown bollygum, brown Bollywood, sycamore and brown beech.
The powdered bark, known as jigat, may b ...
and other trees), and the perfume ingredients - which would be a masala (spice mix
Spice mixes are blended spices or herbs. When a certain combination of herbs or spices is called for in a recipe, it is convenient to blend these ingredients beforehand. Blends such as chili powder, curry powder, herbes de Provence, garlic salt ...
) powder of ground ingredients into which the stick would be rolled, or a perfume liquid sometimes consisting of synthetic ingredients into which the stick would be dipped. Perfume is sometimes sprayed on the coated sticks. Stick machines are sometimes used, which coat the stick with paste and perfume, though the bulk of production is done by hand rolling at home. There are about 5,000 incense companies in India that take raw unperfumed sticks hand-rolled by approximately 200,000 women working part-time at home, and then apply their own brand of perfume, and package the sticks for sale. An experienced home-worker can produce 4,000 raw sticks a day. There are about 50 large companies that together account for up to 30% of the market, and around 500 of the companies, including a significant number of the main ones, including Moksh Agarbatti, PremaNature, and Cycle Pure, are based in Mysore.
Jewish Temple in Jerusalem
Ketoret
The incense offering ( he, ) in Judaism was related to perfumed offerings on the altar of incense in the time of the Tabernacle and the First and Second Temple period, and was an important component of priestly liturgy in the Temple in Jerusal ...
( he, קְטֹרֶת) was the incense offered in the Temple in Jerusalem
The Temple in Jerusalem, or alternatively the Holy Temple (; , ), refers to the two now-destroyed religious structures that served as the central places of worship for Israelites and Jews on the modern-day Temple Mount in the Old City of Jerusa ...
and is stated in the Book of Exodus
The Book of Exodus (from grc, Ἔξοδος, translit=Éxodos; he, שְׁמוֹת ''Šəmōṯ'', "Names") is the second book of the Bible. It narrates the story of the Exodus, in which the Israelites leave slavery in Biblical Egypt through t ...
to be a mixture of stacte
Stacte ( el, στακτή, staktē) and nataph ( he, נָטָף, ''nataf'') are names used for one component of the Solomon's Temple incense, the ''Ketoret'', specified in the Book of Exodus (). Variously translated to the Greek term ( AMP: ) o ...
, onycha
Onycha (, grc, ὄνυξ, ónux), along with equal parts of stacte, galbanum, and frankincense, was one of the components of the consecrated ''Ketoret'' (incense) which appears in the Torah book of Exodus (Ex.30:34-36) and was used in the Jer ...
, galbanum
Galbanum is an aromatic gum resin and a product of certain umbelliferous Persian plant species in the genus ''Ferula'', chiefly ''Ferula gummosa'' (synonym ''F. galbaniflua'') and ''Ferula rubricaulis''. Galbanum-yielding plants grow plentifull ...
and frankincense
Frankincense (also known as olibanum) is an aromatic resin used in incense and perfumes, obtained from trees of the genus '' Boswellia'' in the family Burseraceae. The word is from Old French ('high-quality incense').
There are several species ...
.
Japanese
In Japan incense appreciation folklore
Folklore is shared by a particular group of people; it encompasses the traditions common to that culture, subculture or group. This includes oral traditions such as tales, legends, proverbs and jokes. They include material culture, ranging ...
includes art, culture, history, and ceremony. Incense burning may occasionally take place within the tea ceremony
An East Asian tea ceremony, or ''Chádào'' (), or ''Dado'' ( ko, 다도 (茶道)), is a ceremonially ritualized form of making tea (茶 ''cha'') practiced in East Asia by the Chinese, Japanese, and Koreans. The tea ceremony (), literally transl ...
, just like calligraphy
Calligraphy (from el, link=y, καλλιγραφία) is a visual art related to writing. It is the design and execution of lettering with a pen, ink brush, or other writing instrument. Contemporary calligraphic practice can be defined as "t ...
, ikebana
is the Japanese art of flower arrangement. It is also known as . The tradition dates back to Heian period, when floral offerings were made at altars. Later, flower arrangements were instead used to adorn the (alcove) of a traditional Japan ...
, and scroll
A scroll (from the Old French ''escroe'' or ''escroue''), also known as a roll, is a roll of papyrus, parchment, or paper containing writing.
Structure
A scroll is usually partitioned into pages, which are sometimes separate sheets of papyrus ...
arrangement. , the art of incense appreciation, is generally practiced as a separate art form from the tea ceremony, and usually within a tea room of traditional Zen design.
and are the two most important ingredients in Japanese incense. The characters in agarwood mean "incense that sinks in water" due to the weight of the resin in the wood. Sandalwood is used in the Japanese tea ceremony
The Japanese tea ceremony (known as or ) is a Japanese cultural activity involving the ceremonial preparation and presentation of , powdered green tea, the procedure of which is called . While in the West it is known as "tea ceremony", it is se ...
. The most valued sandalwood comes from Mysore
Mysore (), officially Mysuru (), is a city in the southern part of the state of Karnataka, India. Mysore city is geographically located between 12° 18′ 26″ north latitude and 76° 38′ 59″ east longitude. It is located at an altitude of ...
in the state of Karnataka
Karnataka (; ISO: , , also known as Karunāḍu) is a state in the southwestern region of India. It was formed on 1 November 1956, with the passage of the States Reorganisation Act. Originally known as Mysore State , it was renamed ''Karnat ...
in India.
Japanese incense companies divide agarwood into six categories depending on its properties and the region from which it is obtained. , a type of agarwood, is currently worth more than its weight in gold.
Usage
Practical
Incense fragrances can be of such great strength that they obscure other less desirable odours. This utility led to the use of incense in funerary ceremonies because the incense could smother the scent of decay. An example, as well as of religious use, is the giant Botafumeiro
The Botafumeiro () is a famous thurible in the Santiago de Compostela Cathedral. In the past, similar devices were used in large churches in Galicia; one is still used in Tui Cathedral. Incense is burned in this swinging metal container, or ce ...
thurible that swings from the ceiling of the Cathedral of Santiago de Compostela. It is used in part to mask the scent of the many tired, unwashed pilgrims huddled together in the Cathedral of Santiago de Compostela
The Santiago de Compostela Archcathedral Basilica (Spanish and Galician: ) is part of the Metropolitan Archdiocese of Santiago de Compostela and is an integral component of the Santiago de Compostela World Heritage Site in Galicia, Spain. The c ...
.
A similar utilitarian use of incense can be found in the post-Reformation
The Reformation (alternatively named the Protestant Reformation or the European Reformation) was a major movement within Western Christianity in 16th-century Europe that posed a religious and political challenge to the Catholic Church and in ...
Church of England
The Church of England (C of E) is the established Christian church in England and the mother church of the international Anglican Communion. It traces its history to the Christian church recorded as existing in the Roman province of Britain ...
. Although the ceremonial use of incense was abandoned until the Oxford Movement
The Oxford Movement was a movement of high church members of the Church of England which began in the 1830s and eventually developed into Anglo-Catholicism. The movement, whose original devotees were mostly associated with the University of O ...
, it was common to have incense (typically frankincense
Frankincense (also known as olibanum) is an aromatic resin used in incense and perfumes, obtained from trees of the genus '' Boswellia'' in the family Burseraceae. The word is from Old French ('high-quality incense').
There are several species ...
) burned before grand occasions, when the church would be crowded. The frankincense was carried about by a member of the vestry
A vestry was a committee for the local secular and ecclesiastical government for a parish in England, Wales and some English colonies which originally met in the vestry or sacristy of the parish church, and consequently became known colloquiall ...
before the service in a vessel called a 'perfuming pan'. In iconography of the day, this vessel is shown to be elongated and flat, with a single long handle on one side. The perfuming pan was used instead of the thurible
A thurible (via Old French from Medieval Latin ) is a metal censer suspended from chains, in which incense is burned during worship services. It is used in Christian churches including the Roman Catholic, Eastern Orthodox, Assyrian Church of th ...
, as the latter would have likely offended the Protestant sensibilities of the 17th and 18th centuries.
The regular burning of direct-burning incense has been used for chronological measurement in incense clocks. These devices can range from a simple trail of incense material calibrated to burn in a specific time period, to elaborate and ornate instruments with bells or gongs, designed to involve multiple senses.
Incense made from materials such as citronella can repel mosquitoes and other irritating, distracting, or pestilential insects. This use has been deployed in concert with religious uses by Zen Buddhists who claim that the incense that is part of their meditative practice is designed to keep bothersome insects from distracting the practitioner.
Papier d'Arménie
Armenian paper is a type of incense that has been produced for centuries. The paper is infused with essences, fragrances or essential oils in order to achieve a perfuming or cleansing effect. Examples of Armenian paper include Papier d'Armén ...
was originally sold as a disinfectant as well as for the fragrance.
Incense is also used often by people who smoke indoors and do not want the smell to linger.
Aesthetic
Many people burn incense to appreciate its smell, without assigning any other specific significance to it, in the same way that the foregoing items can be produced or consumed solely for the contemplation or enjoyment of the aroma. An example is the , where (frequently costly) raw incense materials such as agarwood are appreciated in a formal setting.
Religious
Religious use of incense is prevalent in many cultures and may have roots in the practical and aesthetic uses, considering that many of these religions have little else in common. One common motif is incense as a form of sacrificial offering to a deity
A deity or god is a supernatural being who is considered divine or sacred. The ''Oxford Dictionary of English'' defines deity as a god or goddess, or anything revered as divine. C. Scott Littleton defines a deity as "a being with powers greate ...
. Such use was common in Judaic worship and remains in use for example in the Catholic, Orthodox, and Anglican churches, Taoist and Buddhist Chinese (, 'offer incense o ancestors/gods), etc.
Time-keeper
Incense clock
The incense clock () is a timekeeping device that originated from China during the Song Dynasty (960-1279) and spread to neighboring East Asian countries such as Japan and Korea. The clocks' bodies are effectively specialized censers that hold i ...
s are used to time social, medical and religious practices in parts of eastern Asia. They are primarily used in Buddhism as a timer of meditation and prayer. Different types of incense burn at different rates; therefore, different incense are used for different practices. The duration of burning ranges from minutes to months.
Aphrodisiac
Incense has been used as an aphrodisiac in some cultures. Both ancient Greek and ancient Egyptian mythology suggest the usage of incense by goddesses and nymphs. Incense is thought to heighten sexual desires and sexual attraction.
Healing stone cleanser
Incense is claimed to cleanse and restore energy in healing stones. The technique used is called “smoke cleansing” and is done by holding a healing stone over the smoke of burning incense for 20 to 30 seconds. Some people believe that this process not only restores energy but eliminates negative energy.
Health risks from incense smoke
Incense smoke contains various contaminants including gaseous pollutants, such as carbon monoxide
Carbon monoxide (chemical formula CO) is a colorless, poisonous, odorless, tasteless, flammable gas that is slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simple ...
(CO), nitrogen oxide Nitrogen oxide may refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds:
Charge-neutral
*Nitric oxide (NO), nitrogen(II) oxide, or nitrogen monoxide
*Nitrogen dioxide (), nitrogen(IV) oxide
* Nitrogen trioxide (), or n ...
s (), sulfur oxide
Sulfur oxide refers to many types of sulfur and oxygen containing compounds such as SO, SO2, SO3, S7O2, S6O2, S2O2, etc.
Sulfur oxide (SO''x'') refers to one or more of the following:
* Lower sulfur oxides (S''n''O, S7O2 and S6O2)
* Sulfur monox ...
s (), volatile organic compounds
Volatile organic compounds (VOCs) are organic compounds that have a high vapour pressure at room temperature
Colloquially, "room temperature" is a range of air temperatures that most people prefer for indoor settings. It feels comfortable to a ...
(VOCs), and adsorbed toxic pollutants (polycyclic aromatic hydrocarbons
A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings. The simplest representative is naphthalene, having two aromatic rings and the three-ring compounds anthracene and phenanthrene. ...
and toxic metal
Metal toxicity or metal poisoning is the toxic effect of certain metals in certain forms and doses on life. Some metals are toxic when they form poisonous soluble compounds. Certain metals have no biological role, i.e. are not essential minerals, o ...
s). The solid particles range between around . In a comparison, Indian sandalwood was found to have the highest emission rate, followed by Japanese aloeswood
Agarwood, aloeswood, eaglewood or gharuwood is a fragrant dark resinous wood used in incense, perfume, and small carvings. This resinous wood is most commonly referred to as "Oud" or "Oudh". It is formed in the heartwood of aquilaria trees when ...
, then Taiwanese aloeswood
Agarwood, aloeswood, eaglewood or gharuwood is a fragrant dark resinous wood used in incense, perfume, and small carvings. This resinous wood is most commonly referred to as "Oud" or "Oudh". It is formed in the heartwood of aquilaria trees when ...
, while Chinese smokeless sandalwood had the least.
Research carried out in Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
in 2001 linked the burning of incense sticks to the slow accumulation of potential carcinogen
A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis (the formation of cancer). This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes. Several radioactive substan ...
s in a poorly ventilated environment by measuring the levels of polycyclic aromatic hydrocarbon
A polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings. The simplest representative is naphthalene, having two aromatic rings and the three-ring compounds anthracene and phenanthrene. ...
s (including benzopyrene
A benzopyrene is an organic compound with the formula C20H12. Structurally speaking, the colorless isomers of benzopyrene are pentacyclic hydrocarbons and are fusion products of pyrene and a phenylene group. Two isomeric species of benzopyrene ...
) within Buddhist temples. The study found gaseous aliphatic
In organic chemistry, hydrocarbons ( compounds composed solely of carbon and hydrogen) are divided into two classes: aromatic compounds and aliphatic compounds (; G. ''aleiphar'', fat, oil). Aliphatic compounds can be saturated, like hexane, ...
aldehyde
In organic chemistry, an aldehyde () is an organic compound containing a functional group with the structure . The functional group itself (without the "R" side chain) can be referred to as an aldehyde but can also be classified as a formyl grou ...
s, which are carcinogenic and mutagenic, in incense smoke.
A survey of risk factors for lung cancer, also conducted in Taiwan, noted an inverse association
Association may refer to:
*Club (organization), an association of two or more people united by a common interest or goal
*Trade association, an organization founded and funded by businesses that operate in a specific industry
*Voluntary associatio ...
between incense burning and adenocarcinoma
Adenocarcinoma (; plural adenocarcinomas or adenocarcinomata ) (AC) is a type of cancerous tumor that can occur in several parts of the body. It is defined as neoplasia of epithelial tissue that has glandular origin, glandular characteristics, or ...
of the lung, though the finding was not deemed significant.
In contrast, epidemiologists at the Hong Kong Anti-Cancer Society, Aichi Cancer Center in Nagoya, and several other centers found: "No association was found between exposure to incense burning and respiratory symptoms like chronic cough, chronic sputum, chronic bronchitis, runny nose, wheezing, asthma, allergic rhinitis, or pneumonia among the three populations studied: i.e. primary school children, their non-smoking mothers, or a group of older non-smoking female controls. Incense burning did not affect lung cancer risk among non-smokers, but it significantly reduced risk among smokers, even after adjusting for lifetime smoking amount." However, the researchers qualified their findings by noting that incense burning in the studied population was associated with certain low-cancer-risk dietary habits, and concluded that "diet can be a significant confounder of epidemiological studies on air pollution and respiratory health."
Although several studies have not shown a link between incense and lung cancer
Lung cancer, also known as lung carcinoma (since about 98–99% of all lung cancers are carcinomas), is a malignant lung tumor characterized by uncontrolled cell growth in tissue (biology), tissues of the lung. Lung carcinomas derive from tran ...
, many other types of cancer have been directly linked to burning incense. A study published in 2008 in the medical journal ''Cancer
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...
'' found that incense use is associated with a statistically significant higher risk of cancers of the upper respiratory tract
The respiratory tract is the subdivision of the respiratory system involved with the process of respiration in mammals. The respiratory tract is lined with respiratory epithelium as respiratory mucosa.
Air is breathed in through the nose to th ...
, with the exception of nasopharyngeal cancer
Nasopharyngeal carcinoma (NPC), or nasopharynx cancer, is the most common cancer originating in the nasopharynx, most commonly in the postero-lateral nasopharynx or pharyngeal recess ( fossa of Rosenmüller), accounting for 50% of cases. NPC occurs ...
. Those who used incense heavily also were 80% more likely to develop squamous-cell carcinoma
Squamous-cell carcinomas (SCCs), also known as epidermoid carcinomas, comprise a number of different types of cancer that begin in squamous cells. These cells form on the surface of the skin, on the lining of hollow organs in the body, and on the ...
s. The link between incense use and increased cancer risk held when the researchers weighed other factors, including cigarette smoking, diet and drinking habits. The research team noted that "This association is consistent with a large number of studies identifying carcinogens in incense smoke, and given the widespread and sometimes involuntary exposure to smoke from burning incense, these findings carry significant public health implications."
In 2015, the South China University of Technology found toxicity of incense to Chinese hamsters' ovarian cells to be even higher than cigarettes.
Incensole acetate, a component of frankincense
Frankincense (also known as olibanum) is an aromatic resin used in incense and perfumes, obtained from trees of the genus '' Boswellia'' in the family Burseraceae. The word is from Old French ('high-quality incense').
There are several species ...
, has been shown to have anxiolytic-like and antidepressive-like effects in mice, mediated by activation of poorly-understood TRPV3
Transient receptor potential cation channel, subfamily V, member 3, also known as TRPV3, is a human gene encoding the protein of the same name.
The TRPV3 protein belongs to a family of nonselective cation channels that function in a variety of pro ...
ion channels in the brain.
See also
*Incense trade route
The Incense Trade Route was an ancient network of major land and sea trading routes linking the Mediterranean world with eastern and southern sources of incense, spices and other luxury goods, stretching from Mediterranean ports across the Levan ...
*Kyphi
Kyphi, cyphi, or Egyptian cyphi is a compound incense that was used in ancient Egypt for religious and medical purposes.
Word
Kyphi ( la, cyphi) is romanized from Greek κυ̑φι for Ancient Egyptian "kap-t", incense, from "kap", to perfume ...
*''Kōbako
A is an incense storage box used in kōdō (, "Way of Incense"), the traditional Japanese art which involves using and appreciating incense within a structure of codified conduct. It can be used to store the items needed for the incense-comp ...
''
*Kōdō
is the art of appreciating Japanese incense, and involves using incense within a structure of codified conduct. ''Kōdō'' includes all aspects of the incense process, from the , to activities such as the incense-comparing games ''kumikō'' () a ...
, incense arts
*Silk Road
The Silk Road () was a network of Eurasian trade routes active from the second century BCE until the mid-15th century. Spanning over 6,400 kilometers (4,000 miles), it played a central role in facilitating economic, cultural, political, and rel ...
*Smudging
Smudging, or other rites involving the burning of sacred herbs (e.g., white sage) or resins, is a ceremony practiced by some Indigenous peoples of the Americas. While it bears some resemblance to other ceremonies and rituals involving smoke (e. ...
*Votive candle
A votive candle or prayer candle is a small candle, typically white or beeswax yellow, intended to be burnt as a votive offering in an act of Christian prayer, especially within the Anglican, Lutheran, and Roman Catholic Christian denominations, ...
References
Further reading
* Silvio A. Bedini. (1994). "The Trail of Time: Time Measurement with Incense in East Asia". ''Cambridge University Press
Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by Henry VIII of England, King Henry VIII in 1534, it is the oldest university press
A university press is an academic publishing hou ...
''.
External links
Photo Project about Incense Offering on Chinese New Year
{{Transient receptor potential channel modulators