High performance thin layer chromatography-automated multiple development bioautography of phytoconstituents and quantification of stigmasterol in Monochoria vaginalis and Monochoria hastata with antioxidant potential Bai NKasthuri, Ilango K. High performance thin layer chromatography-automated multiple development bioautography of phytoconstituents and quantification of stigmasterol in Monochoria vaginalis and Monochoria hastata with antioxidant potential. Pharmacognosy Magazine. 2018;14(55s):s45-s51.