Results 181 to 190 of about 316,761 (234)

Condensed Tannins in Canola Hulls

Journal of Agricultural and Food Chemistry, 1994
The total content and the biological activity of tannins in canola hulls were determined in several samples of hulls of Westar, Cyclone, Excel, and Delta canola varieties. The contents of condensed tannins in canola hulls ranged from 14 to 1556 mg of catechin equivalents/100 g of hulls as determined by vanillin assay, up to 8 times more condensed ...
Marian Naczk, Tom Nichols, David Pink, Frank Sosulski   +3 more
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The condensed tannins (proanthocyanidins) in seagrasses

Aquatic Botany, 1984
Abstract In a survey of 29 species in the 12 seagrass genera, those in the Potamogetonaceae that characteristically have tannin cells in the leaves (Posidonioideae: Posidonia; Cymodoceoideae: Halodule, Syringodium, Cymodocea, Thalassodendron, Amphibolis) contained compounds with the Rf values and color reactions typical of condensed tannins.
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CONDENSED TANNINS OF RAPESEED MEAL

Journal of Food Science, 1979
ABSTRACT The study was undertaken to determine the amount and nature of condensed tannins in rapeseed meal. No condensed tannins were found in rapeseed meats (endosperm plus germ). The hulls, however, yielded 0.1% condensed tannins by 70% aqueous acetone extraction, the bulk of the condensed tannins in the hulls being unextractable by
J. LEUNG, T. W. FENTON, M. M. MUELLER, O. R. CLANDININ   +3 more
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Reaction of condensed tannins with ammonia

Industrial Crops and Products, 2013
Abstract Reaction of condensed (flavonoid) mimosa tannin extracts with concentrated aqueous ammonia has been investigated. For that purpose, catechin was also used as a flavonoid model compound and treated in similar conditions. Solid state CP-MAS 13C NMR and MALDI-ToF spectroscopy studies revealed that, unlike what was recently theorised, amination ...
F. Braghiroli, V. Fierro, A. Pizzi, K. Rode, W. Radke, L. Delmotte, J. Parmentier, A. Celzard   +7 more
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Antinutritional Effects of Condensed and Hydrolyzable Tannins

1992
Despite 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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Condensed tannins of pea seeds

Plant Science Letters, 1984
Summary Condensed tannins were present in pea testas which contained anthocyanin, but were very much reduced in amount in testas lacking anthocyanin and in cotyledons. Testa tannin was more highly polymerised than that from cotyledons.
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Structure of Condensed Tannins

Nature, 1965
L L, Creasy, T, Swain
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Biogenesis of Condensed Tannins — An Overview

1989
There are currently four hypotheses as to how condensed tannins are produced in nature. In order to explain the 2,3-cis configuration of frequently encountered proanthocyanidin polymers, each of these biosynthetic proposals invoke isomerase enzymes or chemical intermediates not yet encountered in nature.
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Interaction of Condensed Tannins with Biopolymers

1989
Condensed tannins form complexes with a multitude of species, ranging in size from divalent and trivalent metal ions to macromolecules, both naturally occurring and synthetic. Many of these complexes are of low solubility, permitting detection by techniques as simple as precipitation. Determination of the interactions responsible for the initial events
Luanne F. Tilstra, Wolfgang R. Bergmann, Donghwan Cho, Wayne L. Mattice   +3 more
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Condensed Tannins

1999
Daneel Ferreira, Reinier J.J. Nel, Riaan Bekker   +2 more
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