title: An improved method for the analysis of sennosides in Cassia angustifolia by high-performance liquid chromatography.
abstract: A reversed-phase column liquid chromatographic method for the analysis of sennosides A and B present in leaf and pod extracts of Cassia angustifolia has been developed using a Symmetry C18 column and a linear binary gradient profile. The method can be utilised for the quantitative determination of other sennosides as a baseline resolution for most of the constituents was achieved. The method is economical in terms of the time taken and the amount of solvent used (25 mL) for each analysis. The validity of the method with respect to analysis was confirmed by comparing the UV spectra of each peak with those of reference compounds using a photodiode array detector.
authors.affiliation: Central Institute of Medicinal and Aromatic Plants (CIMAP), P.O. CIMAP, Lucknow-226015, India.
authors.forename: S
authors.initials: S
authors.lastname: Bala
authors.forename: G C
authors.initials: GC
authors.lastname: Uniyal
authors.forename: T
authors.initials: T
authors.lastname: Dubey
authors.forename: S P
authors.initials: SP
authors.lastname: Singh
mesh_terms: D000880:Anthraquinones / Q000032:analysis*; D002366:Cassia / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D015203:Reproducibility of Results; D012676:Senna Extract; D000081226:Sennosides; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000880:Anthraquinones; D000081226:Sennosides; D012676:Senna Extract