HPLC-Mass Spectrometry of Isoflavonoids in Soy and the American Groundnut, Apios Americana

There is an ever growing interest in the study of the polyphenols. Their importance in the prevention of chronic disease is gradually being unfolded. Examples range from those such as the flavonoid quercitin and the stilbene resveratrol in red wine (Das et al., 1999) to the isoflavonoids daidzein, genistein and glycitein in soy (Barnes, 1998).