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http://dx.doi.org/10.7740/kjcs.2020.65.2.084

Effect of Biotic Substances on Isoflavone Content in Soybean Germination  

Kim, Seo-Young (Department of Medical Biotechnology, SoonChunHyang University)
Song, Young-Ho (Department of Medical Biotechnology, SoonChunHyang University)
Yi, Yoo-Jung (Department of Medical Biotechnology, SoonChunHyang University)
Kim, Hong-Sik (Department of Southern Area Crop Science, NICS, RDA)
Kim, Yong-Ho (Department of Medical Biotechnology, SoonChunHyang University)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.65, no.2, 2020 , pp. 84-92 More about this Journal
Abstract
For humans, soybean and soybean products are the main dietary sources of isoflvones, which are polyphenolic compounds that represent one of the most common categories of phytoestrogens. The objective of this study was to determine isoflavone concentrations in soybean cultivars during germination when treated with some biotic substances. Three soybean cultivars were germinated in replicated trials in 2018/2019 and their individual and total isoflavone concentrations were determined using HPLC (High-Performance Liquid Chromatography). Significant differences were observed in total isoflavone content were observed among cultivars regardless of years and treatments. 'Daepung2-ho' and 'Uram' had significantly higher total isoflavones than 'Pungsannaul-kong'. Differences among treatments were also significant for total isoflavone content. In 2018, with chitosan treatment, total isoflavone concentration ranged from 551.15 to 7584.07 ㎍ g-1, with an average of 2972.64 ㎍ g-1 across cultivars. In 2019, there was no significant difference among treatments in total isoflavone content. Regarding individual isoflavone concentrations, the malonyl-glucoside groups accounted for over 85% of the total isoflavone content, which is indicated that these groups play an important role with regard to isoflavone components in soybean seeds. The individual proportions in the total concentrations of isoflavones varied according to germination period and seed tissues. Glucosides and malonyl-glucosides showed differences in concentrations among seed tissues, aglycones were further accumulated as germination period was progressed. This study suggests that biotic substances have an impact on seed isoflavone content during germination. However, cultivars with consistently high or low isoflavone concentrations across biotic substance treatments were identified desspite differences in germination period and seed tissues, demonstrating that the genetic factor plays the most important role in isoflavone accumulation.
Keywords
biotic substance; germination; isoflavone; soybean;
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Times Cited By KSCI : 6  (Citation Analysis)
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