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Arecatannin A1
Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols by both current definitions, and fit the distinct definition of a polymeric phenol as well. Known molecules * Arecatannin A1 * Arecatannin A2 Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols b ... (CAS number : 79763-29-4, formula : C60H50O24, MW : 1154.26920253) * Arecatannin A3 * Arecatannin B1 * Arecatannin B2 * Arecatannin C1 References Procyanidins {{Polyphenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procyanidin
Procyanidins are members of the proanthocyanidin (or condensed tannins) class of flavonoids. They are oligomeric compounds, formed from catechin and epicatechin molecules. They yield cyanidin when depolymerized under oxidative conditions. See the box below entitled "Types of procyanidins" for links to articles on the various types. Distribution in plants Procyanidins, including the lesser bioactive / bioavailable polymers (4 or more catechines), represent a group of condensed flavan-3-ols that can be found in many plants, most notably apples, maritime pine bark, cinnamon, aronia fruit, cocoa beans, grape seed, grape skin, and red wines of ''Vitis vinifera'' (the common grape). However, bilberry, cranberry, black currant, green tea, black tea, and other plants also contain these flavonoids.USDA, August 2004USDA Database for the Proanthocyanidin Content of Selected Foods PDF summary accessed from main USDA pag Page accessed July 31, 2015 Procyanidins can also be isolated from ''Q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Areca Catechu
''Areca catechu'' is a species of palm which grows in much of the tropical Pacific, Asia, and parts of east Africa. The palm is believed to have originated in the Philippines, but is widespread in cultivation and is considered naturalized in southern China (Guangxi, Hainan, Yunnan), Taiwan, India, Bangladesh, the Maldives, Sri Lanka, Cambodia, Laos, Thailand, Vietnam, Malaysia, Indonesia, New Guinea, many of the islands in the Pacific Ocean, and also in the West Indies. Common names in English include areca palm, areca nut palm, betel palm, betel nut palm, Indian nut, Pinang palm and catechu. In English this palm is called the betel tree because its fruit, the areca nut, is often chewed along with the betel leaf, a leaf from a vine of the family Piperaceae. Characteristics Growth ''Areca catechu'' is a medium-sized palm tree, growing straight to tall, with a trunk in diameter. The leaves are long, pinnate, with numerous, crowded leaflets. Chemical composition The see ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Areca Nut
''Areca'' is a genus of 51 species of palms in the family Arecaceae, found in humid tropical forests from the islands of the Philippines, Malaysia and India, across Southeast Asia to Melanesia. The generic name ''Areca'' is derived from a name used locally on the Malabar Coast of India. Usage The best-known member of the genus is '' A. catechu'', the areca nut palm. Several species of areca nuts, known for their bitter and tangy taste, raw or dried, are routinely used for chewing, especially in combination with the leaves of betel and dried leaves of tobacco. Areca nut is also popularly referred to as betel nut because of its usage for chewing with betel leaves. In Assam, areca nut is also known as ''tamul'' in the local dialect. Species (51 species) *''Areca abdulrahmanii'' J.Dransf. *''Areca ahmadii'' J.Dransf. *'' Areca andersonii'' J.Dransf. *''Areca gandamatu'' Sultan Mardan Plantation *''Areca arundinacea'' Becc. *''Areca brachypoda'' J.Dransf. *''Areca caliso'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphenol
Polyphenols () are a large family of naturally occurring organic compounds characterized by multiples of phenol units. They are abundant in plants and structurally diverse. Polyphenols include flavonoids, tannic acid, and ellagitannin, some of which have been used historically as dyes and for tanning garments. Etymology The name derives from the Ancient Greek word (''polus'', meaning "many, much") and the word phenol which refers to a chemical structure formed by attaching to an aromatic benzenoid (phenyl) ring to a hydroxyl (-OH) group as is found in alcohols (hence the ''-ol'' suffix). The term polyphenol has been in use at least since 1894. Definition The term polyphenol is not well-defined, but is generally agreed that they are natural products "having a polyphenol structure (i.e., several hydroxyl groups on aromatic rings)" including four principal classes: "phenolic acids, flavonoids, stilbenes, and lignans". *Flavonoids include flavones, flavonols, flavanols, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymer
A polymer (; Greek '' poly-'', "many" + ''-mer'', "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function. Polymers, both natural and synthetic, are created via polymerization of many small molecules, known as monomers. Their consequently large molecular mass, relative to small molecule compounds, produces unique physical properties including toughness, high elasticity, viscoelasticity, and a tendency to form amorphous and semicrystalline structures rather than crystals. The term "polymer" derives from the Greek word πολύς (''polus'', meaning "many, much") and μέρος (''meros'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecatannin A1
Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols by both current definitions, and fit the distinct definition of a polymeric phenol as well. Known molecules * Arecatannin A1 * Arecatannin A2 Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols b ... (CAS number : 79763-29-4, formula : C60H50O24, MW : 1154.26920253) * Arecatannin A3 * Arecatannin B1 * Arecatannin B2 * Arecatannin C1 References Procyanidins {{Polyphenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecatannin A2
Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols by both current definitions, and fit the distinct definition of a polymeric A polymer (; Greek '' poly-'', "many" + '' -mer'', "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic an ... phenol as well. Known molecules * Arecatannin A1 * Arecatannin A2 (CAS number : 79763-29-4, formula : C60H50O24, MW : 1154.26920253) * Arecatannin A3 * Arecatannin B1 * Arecatannin B2 * Arecatannin C1 References Procyanidins {{Polyphenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecatannin A3
Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols by both current definitions, and fit the distinct definition of a polymeric phenol as well. Known molecules * Arecatannin A1 * Arecatannin A2 Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols b ... (CAS number : 79763-29-4, formula : C60H50O24, MW : 1154.26920253) * Arecatannin A3 * Arecatannin B1 * Arecatannin B2 * Arecatannin C1 References Procyanidins {{Polyphenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecatannin B1
Arecatannin B1 is a B type proanthocyanidin found in the betel nut.Screening of various plant extracts used in Ayurvedic medicine for inhibitory effects on human immunodeficiency virus type 1 (HIV-1) protease. Kusumoto I.T., Nakabayashi T., Kida H., Miyashiro H., Hattori M., Namba T. and Shimotohno K., PTR. Phytotherapy research, 1995, vol. 9, no3, pp. 180-184, It is an arecatannin Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols b ... trimer with a 4β→6 bond. References External links Arecatannin B1 on http://herbdb.koushi.pref.okinawa.jp(Japanese) Procyanidins Natural phenol trimers {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecatannin B2
Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols by both current definitions, and fit the distinct definition of a polymeric phenol as well. Known molecules * Arecatannin A1 * Arecatannin A2 (CAS number : 79763-29-4, formula : C60H50O24, MW : 1154.26920253) * Arecatannin A3 Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols b ... * Arecatannin B1 * Arecatannin B2 * Arecatannin C1 References Procyanidins {{Polyphenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arecatannin C1
Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols by both current definitions, and fit the distinct definition of a polymeric phenol as well. Known molecules * Arecatannin A1 * Arecatannin A2 (CAS number : 79763-29-4, formula : C60H50O24, MW : 1154.26920253) * Arecatannin A3 * Arecatannin B1 * Arecatannin B2 Arecatannins are a class of condensed tannins in the sub-class procyanidins contained in the seeds of ''Areca catechu'' also called betel nut. The arecatannin-type natural products from Ceylonese cassia bark and Areca seed are examples polyphenols b ... * Arecatannin C1 References Procyanidins {{Polyphenol-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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