Skip to content
EntityQ3051341· pop 8· linked from 109 articles

ellagitannin

Sign in to save

Also known as ellagitannins

thumb|right|130px|Castalagin is a representative ellagitannin, characterized by coupled gallic acid substituents The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl groups are linked through C-C bonds, whereas the galloyl groups in gallotannins are linked by depside bonds.

In the Vinony graph

Vinony's link graph records 109 inbound references to ellagitannin, and connects out to gallic acid, castalagin and pomegranate.

Vinony files it under Aromatase inhibitors, Ellagitannins and Wood extracts.

Vinony links it to 8 Wikipedia language editions.

~2 min read

Encyclopedic overview

9 sections
Contents
  • Examples
  • Metabolism
  • Degradation
  • Natural occurrences
  • See also
  • Other links
  • References
  • Further reading
  • External links

thumb|right|130px|Castalagin is a representative ellagitannin, characterized by coupled gallic acid substituents The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl groups are linked through C-C bonds, whereas the galloyl groups in gallotannins are linked by depside bonds.

Ellagitannins contain various numbers of hexahydroxydiphenoyl units, as well as galloyl units and/or sanguisorboyl units bounded to sugar moiety. In order to determine the quantity of every individual unit, the hydrolysis of the extracts with trifluoroacetic acid in methanol/water system is performed. Hexahydroxydiphenic acid, created after hydrolysis, spontaneously lactonized to ellagic acid, and sanguisorbic acid to sanguisorbic acid dilactone, while gallic acid remains intact.

Excerpted from Wikipedia’s “ellagitannin” article, available under the CC BY-SA 4.0 licence.

Available in 8 languages

via Wikidata sitelinks · CC0

Connections

Categories