Hydrolyzable vs. Condensed Wood Tannins for Bio-based Antioxidant Coatings: Superior Properties of Quebracho Tannins
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منابع مشابه
Tannins of Constant Structure in Medicinal and Food Plants—Hydrolyzable Tannins and Polyphenols Related to Tannins
In addition to the commonly used classification as hydrolyzable tannins and condensed tannins, tannins can also be categorized into two other types: polyphenols of constant chemical structure (Type A) and polyphenols of variable composition (Type B). Both types of tannins and related polyphenols account for a large part of plant polyphenols, but accurate structure-activity correlations on a mol...
متن کاملCondensed tannins. 20. Chromophoric properties of flavan-4-ols, flavan-3,4-diols and condensed tannins.
Brown, B. R. & MacBride, J. A. H. (1963). Chem. & Ind. p. 1037. Clark-Lewis, J. W. & Jackman, L. M. (1961). Proc. chem. Soc. p. 165. Clark-Lewis, J. W., Jackman, L. M. & Williams, L. R. (1962). J. chem. Soc. p. 3858. Clark-Lewis, J. W. & Katekar, G. F. (1962). J. chem. Soc. p. 4502. Clark-Lewis, J. W. & Mortimer, P. I. (1960). J. chem. Soc. p. 4106. Conroy, H. (1960). Advanc. org. Chem. 2, 308....
متن کاملImproved method for measuring hydrolyzable tannins using potassium iodate
Until now, the recommended procedure for measuring hydrolyzable tannins has been to mix the reagent and sample, subject the mixture to a certain amount of chill, allow the reaction to continue for some time at a higher temperature and then measure the absorbance of the colored solution. The effect of different chill conditions has been studied by many workers but the effect of conditions after ...
متن کاملInteractions of Condensed Tannins with Selected Proteins
The relative affinities ufeondensed tannins purilied from sorghum, pinto bean, quebracho and wattle for six dissimilar protins have been determined by a competitive binding assay. The results indicate that tannin/protein interactions may be specific for different tanains as well as for different proteins. The highly specific interactions suggest that the differences in affinity are functionally...
متن کاملTannins and related polyphenols of melastomataceous plants. VIII. Nobotanins L, M and N, trimeric hydrolyzable tannins from Tibouchina semidecandra.
Three hydrolyzable tannins, nobotannins L, M and N, were isolated from the water-soluble portion of the leaf extract of Tibouchina semidecandra, and their trimeric structures were elucidated from spectral and chemical evidence. Nobotanins L and N exist as equilibrium mixtures of four anomers due to the presence of two unacylated anomeric centers.
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ژورنال
عنوان ژورنال: Antioxidants
سال: 2020
ISSN: 2076-3921
DOI: 10.3390/antiox9090804