Saponins are a class of chemical compounds found in particular abundance in various plant species. More specifically, they are amphipathic glycosides grouped phenomenologically by the soap-like foaming they produce when shaken in aqueous solutions, and structurally by having one or more hydrophilic glycoside moieties combined with a lipophilic triterpene derivative.
Most research work on Artemisia annua has ignored saponins and polysaccharides because these are only soluble in water and in the search of the golden fleece or the exceptional...