Comparative study of gallic acid content in marketed siddha formulations oftriphala chooranam and tablets by HPTLC

The standardization of herbal formulations has become very essential, as there is increase in the demand and use of the herbal formulations. A well known Siddha formulation was standardized for its gallic acid content by High Performance Thin Layer Chromatographic Technique. 50% methanolic extracts of the triphala chooranam and tablets from different manufactures were estimated. These extracts were spotted, developed and scanned at 254nm. The total peak area of standard (Gallic acid) and the corresponding peak area of extracts were compared and the amount in it were calculated. Samples A, B, C (Chooranam), D (Tablets) were taken for the studies.