The aim of this study was to evaluate 30 phenolic compounds in adzuki bean germplasm. Adzuki 21653 had the highest content of total phenolics compounds (6597 μg g-1) while 104372 had the lowest concentration. The average total phenolic content of Japanese (2432 μg g-1) adzuki beans was higher than that of Korean (2256 μg g-1) adzuki beans. The average total phenolic contents were 2507 μg g-1 in small sized adzuki beans from Japan and 2459 μg g-1 in those from Korea. In large sized adzuki beans, the average total phenolic contents were 1315 μg g-1in Japanese seeds and 1232 μg g-1 in Korean seeds. The average total phenolic contents in medium seeds were 2369 μg g-1 in Japanese adzuki beans and 1397 μg g-1 in Korean ones. In small seeds, the total phenolic contents of adzuki beans varied from 524 μg g-1 to 6597 μg g-1 in Japanese ones and from 375 μg g-1 to 6569 μg g-1 in Korean ones. Japanese and Korean adzuki beans were divided into landraces and wild adzuki beans. In this study, the wild adzuki beans showed higher contents of total phenolics than the native varieties. Specifically, the wild adzuki beans from Korea had the highest concentration of phenolics (3403 μg g-1). All adzuki bean germplasms were measured for their color and were classified into four groups accordingly: A; L < 30, +a, +b; B; L < 30, +a, -b, C; L > 50, +a, +b, D; L > 50, +a, -b. Especially, group B had the highest concentration of total phenolic compounds (2827 μg g-1), whereas group C had the lowest concentration (1882 μg g-1).
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ACKNOWLEDGEMENTS
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