Table 1.

Widely used Chinese herbs with oleanolic acid saponins as main active constituents (Long et al., 1989).

Common Name	Constituent group	Content of saponins
Bupleurum	Saikosaponins	1.2–4.7%
Ginseng	Ginsenosides	2.2–5.2%
	American ginseng	6.2–7.4%
Platycodon	Platycodins	>6%
Polygala	Onjisaponins	∼2%