1. ?g/g, respectively (Table 2). WB has higher contents of isoflavone (1.4 fold), flavan (93.1 fold), procyanidin (6.3 fold), and flavone (1.9 fold) than CB. The major flavonoids of WB were isoflavones, epicatechin, and procyanidin B2, whereas those of CB were isoflavones. Isoflavone concentrations in both WB and CB were in increasing order as follows: 6''-Omalonyldaidzin > 6''-O-malonylgenistin > daidzin > genistin > 6''-O-malonylglycitin > glycitin, and total isoflavone content was 1.35-fold higher in WB than in CB. The most discriminant flavonoid between WB and CB was epicatechin, which was 92.8 fold higher in WB than CB. Epicatechin was identified only in WB and one CB (SR), and had the highest content as a single substances at 6171.78 ?g/g. Our result is similar with the previous study that showed isoflavone content of Korean soybean varieties was in the range of 2188-7245 ?g/g, and the proportions of isoflavone-glucoside;sensitivity (LOD, <2.06 ?g/g; LOQ, <6.24 ?g/g),2003
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