Multiple molecular forms of inhibitors of trypsin (TI) and chymotrypsin (CI), which are typical digestive enzymes of insects, mammals and micro-organisms, and subtilisin (SI), a proteinase of many bacteria and phytopathogenic fungi, were identified in seeds and vegetative organs of the majority of 128 wild and cultivated species representing 65 genera of three of the subfamilies of the Composit...

The sesquiterpenic lactones of the family Compositae represent a group of compounds that appear to be of common origin and formed by closely allied biosynthetic processes. They provide an attractive means for further assessing the potential value of chemical characters in chemosystematics, and for examining presently accepted classifications within the family. The genus Arternisia, which is div...

From the aerial parts of Tanacetum balsamita L. (Compositae) a flavonol aglycon was iso­lated using chromatographic techniques. The structure of this compound was determined using spectroscopic methods (UV, H-NMR and MS) as 3',4',5,7-Tetrahydroxy flavonol (Quercetin).