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Tannins

1- Hydrolysable Tannin . Members of this class consist of several molecules of phenolic acids united by ester linkage to a central glucose residue. Such esters are readily hydrolyzed by acids or enzymes so called hydrolysable tannins.. Types of hydrolysable tannin:A- GallitanninOn hydrolysis , it gives gallic acid and glucose.Present in rhubarb, galls, clove, hamamelis. B- Ellagitannin On hydrolysis it gives ellagic acid and glucose Present in 9443

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Tannins

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