gallic acid


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gal·lic ac·id

(gal'ik as'id),
Usually made from tannic acid or nutgalls; used locally as an astringent, for the same purpose as tannic acid.

gallic acid

C6H2(OH)3COOH, a colorless crystalline acid. It occurs naturally as an excrescence on the twigs of trees, esp. oaks, as a reaction to the deposition of gall wasp eggs. It is used as a skin astringent and in the manufacture of writing inks and dyes.
CAS # 149-91-7
See also: acid

gal·lic ac·id

(gal'ik as'id)
A topical astringent.

gallic acid (gal´ik),

n an astringent used topically, made from tannic acid or nutgalls, and chemically known as 3,4,5-trihydroxybenzoic acid.
References in periodicals archive ?
It has already been reported that the active constituents gallic acid and gallicin present in B.
Comparison of hypolipidemic activity of synthetic gallic acid-linoleic acid ester with mixture of gallic acid and linoleic acid, gallic acid, and linoleic acid on high-fat diet induced obesity in C57BL/6 Cr Sic mice.
HFPC Compounds mg/g Percent Gallic acid - - Chlorogenic acid 1.
The total phenolic content was measured by the Folin-Ciocalteu reagent method using gallic acid as the standard.
Preparation of standard stock solution: standard stock solution containing quercetin and gallic acid 1 mg/mL was prepared in methanol.
In each assay, we use data from the antioxidant gallic acid to determine satisfactory assay performance.
Polyphenols in grape seeds are mainly flavanoids, including gallic acid, the monometric flavan-3-ols catachin, epicatechin, gallocatechin, epigallocatechin, and epicatechin 3-O-gallate, and procyanidin dimmers, trimers and more highly-polymerized procyanidins.
With these genomic studies as a guide, New Orleans scientists are collaborating with other ARS scientists in Albany, California, to determine how natural antioxidative phenolic compounds from host plants, such as gallic acid, can prevent accumulation of aflatoxin in economically important crops.
Rutin and gallic acid, pharmaceutical grade standard, was purchased from the National Institute for Control of Pharmaceutical and Biological Products (China).
Reagents were obtained from the following sources: methanol (HPLC grade) from Scharlau; F-C reagent from Panreac, formic acid, caffeic acid, (+)-catechin, gallic acid, and quercetin from Sigma; picric acid solution and creatinine from Fluka, Biochemika; and tyrosol and naringin from Extrasynthese.
In another experiment studying the effect of gentisic acid, salicylic acid, and gallic acid (3, 4, 5-trihydroxybenzoic acid) on the flowering of P.
The extract's antioxidant potency roughly matches that of gallic acid, another potent antioxidant, and, based upon studies conducted by other scientists, it appears to outperform slightly the flavonoid blend in red wine.