Abstract
A number of plants are rich source of gallic acid , a pharmacologically important molecule which exists either in free form or as a part of the tannin molecule. The present study was designed to identify and compare the presence of gall ic acid in the ethanolic extracts of three Indian medicinal plants, Emblica officinalis , Syzygium aromaticum and Rosa sinensis by high performance thin layer chromatography . The pulp of Emblica officinalis had the highest content of gallic acid, 27.36 mg / g of dry weight of extract. The gallic acid content in the petals and buds of Rosa sinensis and Syzygium aromaticum was 12.76 mg / g and 25.98 mg / g of dry weight respectively. The R f value of gallic acid was found to be 0.29. This study significantly co mpares the presence of gallic acid in the three extracts which are a potential source of antioxidant activity.
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