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Cineol
Eucalyptol is a monoterpenoid. A colorless liquid, it is a bicyclic ether. Eucalyptol has a fresh mint-like smell and a spicy, cooling taste. It is insoluble in water, but miscible with organic solvents. Eucalyptol makes up ~70% - 90% of eucalyptus oil. Eucalyptol forms crystalline adducts with hydrohalic acids, ''o''-cresol, resorcinol, and phosphoric acid. Formation of these adducts is useful for purification. In 1870, F. S. Cloez identified and ascribed the name "eucalyptol" to the dominant portion of '' Eucalyptus globulus'' oil. Uses Because of its pleasant, spicy aroma and taste, eucalyptol is used in flavorings, fragrances, and cosmetics. Cineole-based eucalyptus oil is used as a flavouring at low levels (0.002%) in various products, including baked goods, confectionery, meat products, and beverages. In a 1994 report released by five top cigarette companies, eucalyptol was listed as one of the 599 additives to cigarettes. It is claimed to be added to imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Oil
Eucalyptus oil is the generic name for distilled oil from the leaf of ''Eucalyptus'', a genus of the plant family Myrtaceae native to Australia and cultivated worldwide. Eucalyptus oil has a history of wide application, as a pharmaceutical, antiseptic, repellent, flavouring, fragrance and industrial uses. The leaves of selected ''Eucalyptus'' species are steam distilled to extract eucalyptus oil. Types and production Eucalyptus oils in the trade are categorized into three broad types according to their composition and main end-use: medicinal, perfumery and industrial. The most prevalent is the standard cineole-based "oil of eucalyptus", a colourless mobile liquid (yellow with age) with a penetrating, camphoraceous, woody-sweet scent. China produces about 75% of the world trade, but most of this is derived from the cineole fractions of camphor laurel rather than being true eucalyptus oil. Significant producers of true eucalyptus include South Africa, Portugal, Spain, Brazil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euglossa Imperialis
''Euglossa imperialis'' is a bee species in the family Apidae. It is considered to be one of the most important pollinators to many Neotropical orchid species in mainland tropical America. It is also one of the most common non-parasitic euglossine species in lowland Panama.Ackerman, James D., et al.Food-foraging behavior of male Euglossini (Hymenoptera: Apidae): vagabonds or trapliners?" Biotropica (1982): 241-248. ''E. imperialis'', unlike many other bee species, is not a social bee in the sense that there is no apparent morphological or physiological division within the species to distinguish individual bees to be part of a worker or reproductive caste.Roberts, R. B., and Calaway H. Dodson.Nesting biology of two communal bees, Euglossa imperialis and Euglossa ignita (Hymenoptera: Apidae), including description of larvae" Annals of the Entomological Society of America 60.5 (1967): 1007-1014. Taxonomy and phylogenetics ''Euglossa imperialis'' is a bee species of the Euglossini t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aframomum Corrorima
''Aframomum corrorima'' is a species of flowering plant in the ginger family, Zingiberaceae. It's a herbaceous perennial that produces leafy stems 1–2 meters tall from rhizomatous roots. The alternately-arranged leaves are dark green, 10–30 cm long and 2.5–6 cm across, elliptical to oblong in shape. Pink flowers are borne near the ground and give way to red, fleshy fruits containing shiny brown seeds, which are typically 3–5 mm in diameter. The spice, known as Ethiopian cardamom, false cardamom, or ''korarima'', is obtained from the plant's seeds (usually dried), and is extensively used in Ethiopian and Eritrean cuisine. It is an ingredient in ''berbere'', ''mitmita'', ''awaze'', and other spice mixtures, and is also used to flavor coffee. Its flavor is comparable to that of the closely related ''Elettaria cardamomum'' or green cardamom. In Ethiopian herbal medicine, the seeds are used as a tonic, carminative, and laxative. The plant is native to Tanzania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cinnamomum Camphora
''Camphora officinarum'' is a species of evergreen tree that is commonly known under the names camphor tree, camphorwood or camphor laurel. Description ''Camphora officinarum'' is native to China south of the Yangtze River, Taiwan, southern Japan, Korea, India and Vietnam, and has been introduced to many other countries. It grows up to tall. In Japan, where the tree is called ''kusunoki'', five camphor trees are known with a trunk circumference above , with the largest individual, , reaching 24.22 m. The leaves have a glossy, waxy appearance and smell of camphor when crushed. In spring, it produces bright green foliage with masses of small white flowers. It produces clusters of black, berry-like fruit around in diameter. Its pale bark is very rough and fissured vertically. Certain trees in Japan are considered sacred. An example of the importance of a sacred tree is the 700-year old camphor growing in the middle of Kayashima Station. Locals protested against moving the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchid Bee
The tribe Euglossini, in the subfamily Apinae, commonly known as orchid bees or euglossine bees, are the only group of corbiculate bees whose non-parasitic members do not all possess eusocial behavior. Description Most of the tribe's species are solitary, though a few are communal, or exhibit simple forms of eusociality. There are about 200 described species, distributed in five genera: ''Euglossa'', ''Eulaema'', ''Eufriesea'', ''Exaerete'' and the monotypic ''Aglae''. All exclusively occur in South or Central America (though one species, ''Euglossa dilemma'', has become established in the United States). The genera ''Exaerete'' and ''Aglae'' are kleptoparasites in the nests of other orchid bees. All except ''Eulaema'' are characterized by brilliant metallic coloration, primarily green, gold, and blue. Females gather pollen and nectar as food from a variety of plants, and resins, mud and other materials for nest building. Some of the same food plants are also used by the mal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Globulus
''Eucalyptus globulus'', commonly known as southern blue gum or blue gum, is a species of tall, evergreen tree endemic to southeastern Australia. This ''Eucalyptus'' species has mostly smooth bark, juvenile leaves that are whitish and waxy on the lower surface, glossy green, lance-shaped adult leaves, glaucous, ribbed flower buds arranged singly or in groups of three or seven in leaf axils, white flowers and woody fruit. There are four subspecies, each with a different distribution across Australia, occurring in New South Wales, Victoria and Tasmania. The subspecies are the Victorian blue gum, Tasmanian blue gum, Maiden's gum, and Victorian eurabbie. Description ''Eucalyptus globulus'' is a tree that typically grows to a height of but may sometimes only be a stunted shrub, or alternatively under ideal conditions can grow as tall as , and forms a lignotuber. The bark is usually smooth, white to cream-coloured but there are sometimes slabs of persistent, unshed bark at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
François Stanislas Cloez
François Stanislas Cloez (24 June 1817 – 12 October 1883) was a French chemist, who authored both as "''F. S. Cloez''" and "''S. Cloez''", and is known for his pioneering role in analytical chemistry during the 19th century. He was a founder and later president of the Chemistry Society of France. In 1851, Cloez and Italian chemist Stanislao Cannizzaro, working on collaborative research, prepared cyanamide by the action of ammonia on cyanogen chloride in ethereal solution. In the 1870s, he commenced the identification of the constituents of individual essential oils and their classification into groups according to their suitability for medicinal, industrial and perfumery purposes. He identified the major constituent of eucalyptus oil, which he called "''eucalyptol''" (now generally known as cineole). In honour of his work on eucalyptus oil ''Eucalyptus cloeziana'' (Gympie messmate) is named after him. Cloez also played a role in developing a theory on the origin of life elsewhe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 control the outbreak of insect-borne (and other arthropod-bourne) diseases such as malaria, Lyme disease, dengue fever, bubonic plague, river blindness, and West Nile fever. Pest animals commonly serving as vectors for disease include insects such as flea, fly, and mosquito; and ticks (arachnids). Some insect repellents are insecticides (bug killers), but most simply discourage insects and send them flying or crawling away. Nearly any would be fatal upon reaching the median lethal dose, but classification as an insecticide implies death even at lower doses. Effectiveness Synthetic repellents tend to be more effective and/or longer lasting than "natural" repellents. For protection against mosquito bites, the U.S. Centers for Diseas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Dives
''Eucalyptus dives'', commonly known as the broad-leaved peppermint or blue peppermint, is a species of tree that is endemic to south-eastern Australia. It has rough, finely fibrous bark on the trunk and larger branches, smooth bark above, lance-shaped or curved adult leaves, flower buds in groups of eleven or more, white flowers and cup-shaped, hemispherical or conical fruit. Description ''Eucalyptus dives'' is a tree that grows to a height of and forms a lignotuber. The bark on the trunk and larger branches is rough, finely fibrous and greyish and smooth grey on the thinner branches. Young plants and coppice regrowth have leaves arranged in opposite pairs, egg-shaped to heart-shaped or curved, long and wide and sessile. Adult leaves are arranged alternately, lance-shaped to curved, the same slightly glossy or dull green on both sides, long and wide on a petiole long. The flower buds are usually arranged in groups of eleven or more in leaf axils on an unbranched peduncle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Cneorifolia
''Eucalyptus cneorifolia'', the Kangaroo Island narrow-leaf mallee, is a native tree of Kangaroo Island, South Australia. Description The mallee tree will grow to in height, it has an upright habit and can have a single or multiple stems with a lignotuber at the base of the trunk. It mostly forms a dense canopy of thin dark green leaves that have conspicuous oil glands. The bark is fibrous, greyish-brown to dark-grey in colour with longitudinally fissured bark on the lower trunk and with smooth greyish bark above. Adult leaves have an alternate arrangement. The leaf blade is linear-lanceolate or linear-oblong shape with a length of and a width of . the leaves are glossy, olive-green, dull and grey-green when dried with indistinct veins. It flowers between December and April producing inflorescences with small white flowers. The flowers occur in umbels of 4 to 14 found at the axils of the leaves. The buds are usually more or less ellipsoid in shape with a conical or hemispherica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artemisia Tridentata
''Artemisia tridentata'', commonly called big sagebrush,MacKay, Pam (2013), ''Mojave Desert Wildflowers'', 2nd ed., , p. 264. Great Basin sagebrush or (locally) simply sagebrush, is an aromatic shrub from the family Asteraceae, which grows in arid and semi-arid conditions, throughout a range of cold desert, steppe, and mountain habitats in the Intermountain West of North America. The vernacular name "sagebrush" is also used for several related members of the genus ''Artemisia'', such as California sagebrush (''Artemisia californica''). Big sagebrush and other ''Artemisia'' shrubs are the dominant plant species across large portions of the Great Basin. The range extends northward through British Columbia's southern interior, south into Baja California, and east into the western Great Plains of New Mexico, Colorado, Nebraska, and the Dakotas. Several major threats exist to sagebrush ecosystems, including human settlements, conversion to agricultural land, livestock grazing, inva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LD50
In toxicology, the median lethal dose, LD50 (abbreviation for "lethal dose, 50%"), LC50 (lethal concentration, 50%) or LCt50 is a toxic unit that measures the lethal dose of a toxin, radiation, or pathogen. The value of LD50 for a substance is the dose required to kill half the members of a tested population after a specified test duration. LD50 figures are frequently used as a general indicator of a substance's acute toxicity. A lower LD50 is indicative of increased toxicity. The test was created by J.W. Trevan in 1927. The term semilethal dose is occasionally used in the same sense, in particular with translations of foreign language text, but can also refer to a sublethal dose. LD50 is usually determined by tests on animals such as laboratory mice. In 2011, the U.S. Food and Drug Administration approved alternative methods to LD50 for testing the cosmetic drug Botox without animal tests. Conventions The LD50 is usually expressed as the mass of substance administered per unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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