163573.fig.002a
(a)
163573.fig.002b
(b)
Figure 2: (a) Chromatogram of isoflavones in a standard mixture of daidzin, genistin, daidzein, and genistein (6,000 ng/mL, each) and internal standard (IS, fluorescein 10,000 ng/mL). (b) Chromatogram of soybean seed sample (SJ 2 grown at SUT Farm) extracted with 80% methanol plus 2 M NaOH.