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2020 Vol.65, Issue 2 Preview Page

Original Research Article

Effect of Biotic Substances on Isoflavone Content in Soybean Germination

Biotic 물질이 콩 발아 중 Isoflavone 함량에 미치는 영향

Seo-Young Kim1
,
Young-Ho Song1
,
Yoo-Jung Yi1
,
Hong-Sik Kim2
,
Yong-Ho Kim3*
김 서영1
,
송 영호1
,
이 유정1
,
김 홍식2
,
김 용호3*
1Undergraduate Student, Department of Medical Biotechnology, SoonChunHyang University, Asan 31538, Korea
2Senior Researcher, Department of Southern Area Crop Science, NICS, RDA, Miryang 50424, Korea
3Professor, Department of Medical Biotechnology, SoonChunHyang University, Asan 31538, Korea
1순천향대학교 의료생명공학과 학부생
2국립식량과학원 남부작물부 농업연구관
3순천향대학교 의료생명공학과 교수
*Corresponding Author
1 June 2020. pp. 84-92
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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 μg g-1, with an average of 2972.64 μg 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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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 65
  • No :2
  • Pages :84-92
  • Received Date : 2020-02-17
  • Revised Date : 2020-03-30
  • Accepted Date : 2020-04-01
  • DOI :https://doi.org/10.7740/kjcs.2020.65.2.084
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