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Variation of Isoflavone Contents in Korean Soybean Germplasms  

Choung, Myoung-Gun (Department of Pharmacognosy Material Development, Kangwon National University)
Kang, Sung-Taeg (National Institute of Crop Science, RDA)
Han, Won-Young (Yeongnam Agricultural Research Institute, NICS, RDA)
Baek, In-Youl (Yeongnam Agricultural Research Institute, NICS, RDA)
Kim, Hyeun-Kyeung (Yeongnam Agricultural Research Institute, NICS, RDA)
Shin, Doo-Chull (Yeongnam Agricultural Research Institute, NICS, RDA)
Kang, Nam-Suk (Yeongnam Agricultural Research Institute, NICS, RDA)
Hwang, Young-Sun (Department of Pharmacognosy Material Development, Kangwon National University)
An, Young-Nam (Department of Pharmacognosy Material Development, Kangwon National University)
Lim, Jung-Dae (Department of Pharmacognosy Material Development, Kangwon National University)
Kim, Kwan-Su (Department of Medicinal Plant Resources, Mokpo National University)
Park, Si-Hyung (Department of Medicinal Plant Resources, Mokpo National University)
Kim, Sun-Lim (National Institute of Crop Science, RDA)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.51, no.spc1, 2006 , pp. 146-151 More about this Journal
Abstract
Isoflavone in soybean is known to have the important physiological functions such as antioxidative, estrogenic, and anti-tumor activities. Therefore, isoflavone content is considered as important aspect of soybean quality. The objectives of this study are to determine the isoflavone contents of soybean germplasms including major cultivars in Korea, and to provide the basic information of isoflavone far development soybean cultivar containing high isoflavone content. Among 43 Korean major cultivated soybean samples, the total isoflavone contents were varied from $277.0{\mu}g/g\;to\;2,002.0{\mu}g/g$, and the average total isoflavone content was $1,017.3{\pm}390.0{\mu}g/g$. Total isoflavone content of Seokryangputkong $(2,002{\mu}g/g)$ was the highest among those of the other cultivated soybeans. On the other side, Hwangkeumkong $(277{\mu}g/g)$ contained lower isoflavone than other cultivars. The total isoflavone content of vegetable use or early maturity soybean cultivar $(1,438{\pm}493.7{\mu}g/g)$ showed more higher total isoflavone content than others. The daidzein, glycitein, genistein and total isoflavone contents of 648 soybean germplasms collected in Korea, were ranged $16.9{\sim}2,019.8{\mu}g/g,\;0{\sim}294.9{\mu}g/g,\;38.5\sim1,337.7{\mu}g/g,\;and\;82.6{\sim}3,479.2{\mu}g/g$, respectively, and total isoflavone content of IT 180001 line $(3,479.2{\mu}g/g)$ was the highest among those of other soybean germplasm lines.
Keywords
soybean; isoflavone content; germplasm; genistein; daidzein;
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