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Rapid, Facile Synthesis of Silver Nanostructure Using Hydrolyzable Tannin [PDF]
Industrial & Engineering Chemistry Research, 2009 A facial and distinct synthesis process of silver nanoparticles stabilized by tannin in aqueous medium is reported. Silver nitrate is solubilized in water as the source of silver ions, and tannin is solubilized in water as both a reducing agent and stabilizer matter. Due to hydroxyl groups and the dendritic macrostructure of tannin, it was used as both
Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü +2 more
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Combreglutinin, a Hydrolyzable Tannin from Combretum glutinosum
Journal of Natural Products, 1994Combreglutinin [4], a hydrolyzable tannin, was isolated from the leaves of Combretum glutinosum, and its macrocyclic structure was established on the basis of 1 H- and 13 C-nmr and 2D nmr spectroscopic data and by chemical methods. The three known tannins 2,3-(S)-hexahydroxydiphenoyl-D-glucose [1], punicalin [2], and punicalagin [3] were also ...
Jean-Louis Pousset
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Dietary Intake of Hydrolyzable Tannins and Condensed Tannins to Regulate Lipid Metabolism
Mini-Reviews in Medicinal Chemistry, 2022Abstract: Lipid metabolism disorder is a multifactor issue, which contributes to several serious health consequences, such as obesity, hyperlipidemia, atherosclerosis diabetes, non-alcoholic fatty liver, etc. Tannins, applied as naturally derived plants, are commonly used in the study of lipid metabolism disease with excellent safety and effectiveness
Chengfu Yuan +11 more
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Polyphenols ofMyricaria IV. A hydrolyzable tannin substance
Chemistry of Natural Compounds, 1979T K Chumbalov, Chumbalov T K
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Differential effects of condensed and hydrolyzable tannin on polyphenol oxidase activity of attine symbiotic fungus [PDF]
Journal of Chemical Ecology, 1991 --The leaf-cutting ant Atta cephalotes is a generalist herbivore of the neotropics and collects leaf material to cultivate a fungus. It appears that this fungus, a Basidiomycete, is responsible for the ability of the ants to utilize most of the available
Colin Nichols-Orians
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Biosynthesis and subcellular distribution of hydrolyzable tannins
Phytochemistry, 2001Pathways to complex gallotannins have been elucidated by enzyme studies, indicating that beta-glucogallin is required as principal acyl donor. Evidence for the in vitro oxidation of pentagalloylglucose, the pivotal metabolite in this sequence, to ellagitannins, is presented. Immunohistochemical studies with antibodies raised against pentagalloylglucose
P, Grundhöfer +3 more
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Chemical Studies of Proanthocyanidins and Hydrolyzable Tannins
Antioxidants & Redox Signaling, 2001We investigated a number of natural polyphenols representing flavan-3-ols, gallotannins, and ellagitannins with regard to their antioxidant potential. For this purpose we used pulse radiolysis to determine scavenging rate constants with hydroxyl radicals and decay rates of the respective aroxyl radicals and EPR spectroscopy to identify the radicals ...
W, Bors +4 more
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Hydrolyzable Tannins and Related Polyphenols
1995Recent advances in isolation and structure elucidation of several hundred of new polyphenolic compounds of the tannin class using new techniques (1) have altered the definition of a tannin, at least that of a hydrolyzable tannin. Thus the term tannin now includes all polyphenolic compounds of defined chemical structure as well as the whole group of ...
T, Okuda, T, Yoshida, T, Hatano
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Oligomeric hydrolyzable tannins from Monochaetum multiflorum
Phytochemistry, 2004Four hydrolyzable tannins, nobotanins Q, R, S, and T, were isolated from the aqueous acetone extract of the dried leaves of Monochaetum multiflorum (Melastomataceae), a plant indigenous to Colombia. Their dimeric and tetrameric structures were elucidated by spectral and chemical methods.
José H, Isaza +2 more
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Lignin-Hydrolyzable Tannin Interactions in Wood
Journal of Agricultural and Food Chemistry, 1997A series of investigations were carried out to ascertain the relationship between lignin and hydrolyzable tannins in white oak (Quercus alba) and American chestnut (Castanea dentata) milled wood lignins as well as synthetic co-DHPs. Acidolysis and chromatographic analysis of chestnut and white oak milled wood lignins revealed the presence of ellagic ...
Richard F. Helm +2 more
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