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 کاملI79. Tannins as Hydrogen Carriers in Biological Oxidation
EVIDENCE has been piresented [Roberts, 1939; 1940] which indicates that the effect of extensive bruising on tea leaf is to decrease the activity of the H-carrying coenzymes (cozymase). In the so-called tea fermentation which follows this bruising, it was established that carbohydrate oxidation, as measured by the rate of CO2 production, parallels tannin oxidation. Further, if excess ascorbic ac...
متن کاملTRPV1 Antagonists as Analgesic Agents
The last decade (2001 2010), declared as the Decade of Pain Control and Research by the United States Congress, brought significantly advances in our understanding of pain biology. Unfortunately, this has not translated into additional effective treatments of chronic pain conditions. Chronic pain is a debilitating and complex clinical state usually associated with diabetic neuropathy, postherpe...
متن کاملRuminal biohydrogenation as affected by tannins in vitro.
The aim of the present work was to study the effects of tannins from carob (CT; Ceratonia siliqua), acacia leaves (AT; Acacia cyanophylla) and quebracho (QT; Schinopsis lorentzii) on ruminal biohydrogenation in vitro. The tannins extracted from CT, AT and QT were incubated for 12 h in glass syringes in cow buffered ruminal fluid (BRF) with hay or hay plus concentrate as a substrate. Within each...
متن کاملDoes Propolis Contain Tannins?
Although polyphenols have been reported as common constituents of propolis, tannins have rarely been mentioned as its constituents. Propolis samples from seven localities in Brazil were analyzed for detection of proanthocyanidins (condensed tannins) and determination of the tannin content. Positive reaction for proanthocyanidins was observed for all samples tested. The contents of tannins varie...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1972
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.49.3.323