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Hydrolyzed Tannins of Euphorbia glareosa Leaves. Structure of Glarein C
Chemistry of Natural Compounds, 2000The structure of glarein, a new hydrolyzed tannin from Euphorbia glareosa Pall. ex Bieb. leaves, was established using physicochemical properties of the compound itself, its hydrolysis products, and IR, UV, and PMR spectra.
L. N. Gvazava, M. D. Alaniya
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Antinutritional Effects of Condensed and Hydrolyzable Tannins
1992Despite major structural differences, hydrolyzable and condensed tannins often produce similar antinutritional effects. The most common effects are diminished weight gains and lowered efficiency of nutrient utilization. The major biochemical basis for these effects appears not to be inhibition of dietary protein digestion but rather a systemic ...
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ChemInform Abstract: Hydrolyzable Tannins and Related Polyphenols
ChemInform, 1996AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
T. OKUDA, T. YOSHIDA, T. HATANO
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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 ...
Akino Jossang +2 more
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The methanogenic toxicity and anaerobic degradability of a hydrolyzable tannin
Water Research, 1987Abstract Gallotannic acid was found to be highly toxic to methanogenic activity. Concentrations, representing 50% inhibition, approximated 700 mg l−1. The toxicity was persistent despite the rapid degradation of gallotannic acid to volatile fatty acids and methane.
J.A. Field, G. Lettinga
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Enzymes in the Biosynthesis of Hydrolyzable Tannins
1992The two classes of hydrolyzable tannins (i.e., gallotannins and ellagitan-nins) have long been postulated to originate from 1,2,3,4,6-pentagalloyl-glucose as their common precursor. The biosynthesis of this pivotal ester was studied with enzymes from oak and sumac leaves. β-Glucogallin (l-O-galloyl-β-D-glucose), the first intermediate of this metabolic
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Hydrolyzed Tannin from Euphorbia glareosa Leaves
Chemistry of Natural Compounds, 2005Hydrolyzed tannin (I), the structure of which was established using chemical investigations and UV, IR, PMR and 13C NMR spectra, was isolated from Euphorbia glareosa leaves.
L. G. Gvazava, M. D. Alaniya
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Preparation of antibodies against hydrolyzable plant tannins
Phytochemical Analysis, 1998Polyclonal antibodies were raised against covalently protein-coupled 1,2,3,4,6-pentagalloylglucose, the common and immediate precursor of the two subclasses of hydrolyzable tannins, i.e. the polyphenolic gallotannins and ellagitannins. The crude antisera were efficiently purified by affinity-chromatography on pentagalloylglucose-substituted Sepharose ...
Daniela Kaspar +2 more
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Gallic Acid Derivatives and Hydrolyzable Tannins
1989Gallic acid and its derivatives as they occur in extracts of oak-galls constitute a chemical reagent of considerable antiquity. The blue-black color produced when an aqueous infusion is treated with salts of iron was first described by Pliny; its use in the analysis of mineral waters and as a component of invisible ink were noted as early as the ...
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Rapid, Facile Synthesis of Silver Nanostructure Using Hydrolyzable Tannin
Industrial & Engineering Chemistry Research, 2009A 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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