Tannic acid is a specific form of tannin, a type of polyphenol. Its weak acidity (pK a around 6) is due to the numerous phenol groups in the structure.

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Tannic acid is a gallotannin obtained by acylation of the five hydroxy groups of D-glucose by 3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoic acid (a gallic acid dimer). It has a role as a carcinogenic agent, a metabolite and a geroprotector.

Tannic acid is a type of hydrolysable tannin composed of 8 to 10 molecules of gallic acid. Yang et al. (2016) reported that dietary addition with tannic acid at 26.0 g/kg dry matter (DM) decreased the urinary N excretion and increased hippuric acid excretion in beef cattle.

Tannic acid, or tannin, is a bitter tasting substance called polyphenol that is derived from plants. This compound acts as an astringent when consumed or applied topically, which means it shrinks or constricts the body tissues. Tannic acid is the component of red wine or unripe fruit that makes your mouth want to pucker.

2022年10月1日 · Tannic acid (TA), the simplest hydrolysable tannin that has been approved by the FDA as a safe food additive, is one of the most important components of these traditional medicines. Studies have shown that TA displays a wide range of pharmacological activities, such as anti-inflammatory, neuroprotective, antitumor, cardioprotective, and anti ...

2013年7月18日 · But what exactly is Tannic Acid and how does it affect us and living organisms as a whole? Tannic Acid is found in nutgalls, the swelling of trees caused by parasitic wasps.

2012年12月10日 · Tannic acid is a specific tannin that formally contains 10 galloyl (3,4,5-trihydroxyphenyl) units surrounding a glucose center. Commercial tannic acid, however, consists of molecules with 2–12 galloyl moieties.

Tannic acid is also taken by mouth and applied directly for bleeding, chronic diarrhea, dysentery, bloody urine, painful joints, persistent coughs, and cancer. Vaginally, tannic acid is used as a douche for white or yellowish discharge (leukorrhea).

The chemical formula of Tannic acid is C 76 H 52 O 46. The two main types of Acidum tannicum are Condensed tannins and Hydrolyzable tannins. The word tannin is derived from the Celtic word for Oaktree which was once used for leather processing. Table of Contents. Properties of Tannic acid – C 76 H 52 O 46; Structure of Tannic acid (C 76 H 52 ...