tannic acid

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tannic acid

 [tan´ik]
a substance obtained from nutgalls, oak bark, and other plant parts, formerly used in medicine as an astringent. It is no longer used alone because it can be absorbed through mucous membranes or damaged skin in amounts sufficient to produce hepatic necrosis, although it is still used as a component of dermatological preparations.

tan·nic ac·id

(tan'ik as'id),
A tannin that occurs in many plants, particularly in the bark of oaks and other members of the Fagaceae; used as a styptic and astringent, and in the treatment of diarrhea; available also as tannic acid glycerite. Sometimes used synonymously with tannin.

tan·nic ac·id

(tan'ik as'id)
A tannin that occurs in many plants; used as a styptic and astringent and to treat diarrhea.

tannic acid

An antifungal drug, used externally to treat fungus infections of the skin. A brand name of a preparation containing tannic acid and other drugs is Phytex.
References in periodicals archive ?
Chemicals such as tannic acid, gallic acid, Oxidized and reduced glutathione, hydrogen peroxide ([H.sub.2][O.sub.2]), dithionitrobenzene (DTNB), thiobarbituric acid (TBA), and adrenaline were purchased from Sigma Chemical Co.
Furthermore, histopathology study revealed normal glomerulus and tubules with intact renal architecture in normal (Figure 3(a)), gallic (Figure 5(a)), and tannic acid (Figure 5(b)) group without cisplatin injection.
Tonogai, "Effects of the oral administration of green tea polyphenol and tannic acid on serum and hepatic lipid contents and fecal steroid excretion in rats," Journal of Health Science, vol.
Kabra, "Differential effects of tannic acid on cisplatin induced nephrotoxicity in rats," The FEBS Letters, vol.
In this study, the polysilsesquioxanes were successfully synthesized via the sol-gel process of MTES, GPMS, and TEOS using phytic acid, tannic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, and hydrochloric acid as the catalyst, respectively.
Al-Mayouf, AM, "Inhibitors for Chemical Cleaning of Iron With Tannic Acid." Desalination, 121 (2) 173-182 (1999)
Chelating action- Tannic acid exhibits good chelating property with [Fe.sup.2+] and [Fe.sup.3+] ions.
Several other works successfully exhibited corrosion inhibition property of tannic acid in presence of additives, a notable one of which is calcium gluconate [8].
In this paper, we investigated the scale inhibition efficiency of tannic acid for application in oil wells with produced water composition from an offshore field.
Key Words: Cellulase; Xylanase; Rumen bacteria; Tanin; Tannic acid
Tannic acid (TA), typical hydrolysable tannin, is even toxic to both ruminant and monogastric animals particularly when it is available in the diets of those animals in excess amounts (Zhu et al., 1992).
Effect of different concentrations of tannic acid on the enzyme activities: