Condensed tannin
(Redirected from Pyrocatecollic type tannin)
Condensed Tannin[edit | edit source]
Condensed tannins, also known as proanthocyanidins, are a class of polyphenolic compounds found in a variety of plants. These compounds are known for their ability to bind and precipitate proteins, which contributes to their astringent taste. Condensed tannins are oligomers or polymers of flavan-3-ols, such as catechin and epicatechin.
Structure[edit | edit source]
Condensed tannins are composed of flavan-3-ol units linked together by carbon-carbon bonds. The most common linkage is the C4-C8 bond, but C4-C6 linkages can also occur. The degree of polymerization can vary, leading to a wide range of molecular weights and properties. The basic building block of condensed tannins is the flavan-3-ol unit, which can exist in different stereochemical forms, contributing to the diversity of these compounds.
Occurrence[edit | edit source]
Condensed tannins are widely distributed in the plant kingdom. They are found in high concentrations in the bark, wood, leaves, and seeds of many plants. Common sources include grapes, cocoa, tea, and various berries. In the plant, condensed tannins serve as a defense mechanism against herbivores and pathogens due to their ability to bind proteins and other macromolecules.
Biological Activity[edit | edit source]
Condensed tannins have been studied for their potential health benefits. They exhibit antioxidant properties, which can help in reducing oxidative stress in the body. Additionally, they have been shown to have anti-inflammatory, antimicrobial, and anticancer activities. The ability of condensed tannins to bind proteins also makes them useful in the treatment of diarrhea and other gastrointestinal disorders.
Uses[edit | edit source]
In addition to their health benefits, condensed tannins are used in various industrial applications. They are employed in the leather tanning industry due to their ability to cross-link collagen fibers, enhancing the durability and water resistance of leather. They are also used in the production of adhesives, inks, and as natural dyes.
Related Pages[edit | edit source]
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD
