Some Observations on the Effect of Different Drying Methods on the Glycoside Content of the Leaves of Digitalis Lanata

Abstract

Summary A batch of leaves of Digitalis lanata was dried by 5 different methods. The leaf samples were extracted and the digilanid B and C content estimated by paper chromatography and fluorescence photography. A comparative estimate indicating the decomposition of digilanid A was also made. The digilanids were decomposed least in leaves which were dried at a low temperature in vacuo, although sun-drying was equally effective for the preservation of digilanid C.