Viniferin

	Viniferin Viniferin may refer to: * ''alpha''-Viniferin, a resveratrol trimer * ''beta''-Viniferin, a resveratrol cyclic tetramer * ''delta''-Viniferin, a resveratrol dehydrodimer * ''epsilon''-Viniferin, a resveratrol dimer * ''gamma''-Viniferin, a more highly polymerised oligomer of resveratrol * R-Viniferin, a synonym for the stilbenoid vitisin B * R2-Viniferin Vitisin A is a resveratrol tetramer (chemistry), tetramer found in plants of the genus ''Vitis''. It is a complex of two resveratrol dimers, (+)-epsilon-viniferin and ampelopsin B. It shows an opposite effect to hopeaphenol on apoptosis of myocy ... , a synonym for the stilbenoid vitisin A {{Chemistry index ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Delta-Viniferin δ-Viniferin is a resveratrol dehydrodimer. It is an isomer of epsilon-viniferin. It can be isolated from stressed grapevine (''Vitis vinifera'') leaves. It is also found in plant cell cultures and wine. It can also be found in ''Rheum maximowiczii''. It is a grapevine phytoalexin following stresses like fungal infection (by ''Plasmopara viticola'', the agent of downy mildew), UV light irradiation or ozone treatment. ''Botryosphaeria obtusa'', a pathogen responsible for the black dead arm disease of grapevine, has also been shown to be able to oxidise wood δ-resveratrol into delta-viniferin. In cell cultures, the use of methyl jasmonate and jasmonic acid as elicitors stimulates δ-viniferin biosynthesis. Delta-viniferin can also be produced from resveratrol by human PTGS1 (COX-1, cyclooxygenase-1) or from ''trans''-resveratrol and (−)- epsilon-viniferin by horseradish peroxidase. See also * Phenolic content in wine The phenolic content in wine refers to the pheno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Alpha-Viniferin α-Viniferin is a stilbene trimer. It can be isolated from ''Caragana chamlagu'' and from '' Caragana sinica'' and from the stem bark of ''Dryobalanops aromatica''. It is also present in relation to resistance to ''Botrytis cinerea'' and ''Plasmopara viticola'' in ''Vitis vinifera'' and ''Vitis riparia''.Disease resistance of Vitis spp. and the production of the stress metabolites resveratrol, epsilon -viniferin, alpha -viniferin and pterostilbene. Langcake P, Physiological Plant Pathology, 1981, Vol. 18, No. 2, pages 213-226abstract) It has been shown to inhibit acetylcholinesterase Acetylcholinesterase (HGNC symbol ACHE; EC 3.1.1.7; systematic name acetylcholine acetylhydrolase), also known as AChE, AChase or acetylhydrolase, is the primary cholinesterase in the body. It is an enzyme Enzymes () are proteins that a .... References Resveratrol oligomers Acetylcholinesterase inhibitors {{Aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	R-Viniferin Vitisin B is a resveratrol tetramer found in plants of the genus ''Vitis ''Vitis'' (grapevine) is a genus of 79 accepted species of vining plants in the flowering plant family Vitaceae. The genus is made up of species predominantly from the Northern Hemisphere. It is economically important as the source of grapes, b ...''.Opposite Effects of Two Resveratrol (trans-3,5,4′-Trihydroxystilbene) Tetramers, Vitisin A and Hopeaphenol, on Apoptosis of Myocytes Isolated from Adult Rat Heart. Kazuhiko Seya, Kouta Kanemaru, Chiharu Sugimoto, Megumi Suzuki, Teruko Takeo, Shigeru Motomura, Haruo Kitahara, Masatake Niwa, Yoshiteru Oshima and Ken-Ichi Furukawa, JPET January 2009 vol. 328 no. 1 90-98, References External links Vitisin B on www.chemindustry.com Resveratrol oligomers Natural phenol tetramers Grape varieties {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]