Ellagitannins
Ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups. They are reported in dicotyledoneous angiospermes, and notably in species in the order Myrtales. Ellagitannins and ellagic acid have been found as natural components in 46 different foods, with the red raspberry (Rubus idaeus) identified as a major source. Ellagitannins have been investigated in cells and animals in laboratories for antioxidant, anti-cancer, antiviral, antimicrobial, and anti-parastite activities, as well as their ability to regulate blood glucose.
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