title: Standardisation of Gymnema sylvestre R.Br. by high-performance thin-layer chromatography: an improved method.
abstract: An improved high-performance thin-layer chromatographic (HPTLC) method for the standardisation of Gymnema sylvestre is reported. The method involves the initial hydrolysis of gymnemic acids, the active ingredients, to a common aglycone followed by the quantitative estimation of gymnemagenin. The present method rectifies an error found in an HPTLC method reported recently.
authors.affiliation: Laila Impex Research Centre, Unit I, Phase III, Jawahar Autonagar, Vijayawada -520 007, India.
authors.forename: Valivarthi S R
authors.initials: VS
authors.lastname: Raju
authors.forename: S
authors.initials: S
authors.lastname: Kannababu
authors.forename: Gottumukkala V
authors.initials: GV
authors.lastname: Subbaraju
mesh_terms: D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D031104:Gymnema sylvestre / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D012503:Saponins / Q000032:analysis* / Q000737:chemistry; D014315:Triterpenes / Q000032:analysis* / Q000737:chemistry
chemical_list: D012503:Saponins; D014315:Triterpenes; C007898:gymnemic acid