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Changes of Isoflavone Contents in White and Black Soybean Powders Prepared under Drying Conditions after Soaking

불림 후 건조 조건에서 서리태와 백태의 이소플라본 함량 변화

  • Seung-Hyeon Cha (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Ha-Young Song (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Geum-Na Pyeon (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Eun-Ah Hong (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Se-Lim Bak (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Sang-Beom Park (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Shangle Jiang (Dept. of Food Science and Biotechnology, Chungbuk National University) ;
  • Keum-Il Jang (Dept. of Food Science and Biotechnology, Chungbuk National University)
  • 차승현 (충북대학교 식품생명공학과) ;
  • 송하영 (충북대학교 식품생명공학과) ;
  • 편금나 (충북대학교 식품생명공학과) ;
  • 홍은아 (충북대학교 식품생명공학과) ;
  • 박세림 (충북대학교 식품생명공학과) ;
  • 박상범 (충북대학교 식품생명공학과) ;
  • ;
  • 장금일 (충북대학교 식품생명공학과)
  • Received : 2023.01.31
  • Accepted : 2023.02.20
  • Published : 2023.04.30

Abstract

Isoflavones found in soybeans are present as glycosides and aglycones, which differ according to their chemical structure. The absorption rate and bioavailability of aglycones are greater than those of glycosides. It is known that aglycone isoflavones in soybean was converted from glycoside isoflavones by activating of endogenous β-glucosidase under drying (40~60℃) conditions after soaking. In this study, we compared and analyzed the proximate composition and isoflavone contents of soybean powders prepared under dried after soaking were analyzed. In the comparison of the proximate compositions, the moisture contents of white soybean powder dried after soaking (WSPDS) and black soybean powder dried after soaking (BSPDS) were decreased as compared with those of the control white soybean powder (CWSP) and control black soybean powder (CBSP). Whereas the contents of other proximate compositions were increased. The aglycone isoflavone contents were higher in WSPDS than in CWSP. Whereas the aglycone isoflavone contents of BSPDS had a similar content those of CBSP because of the component characteristics of black soybean. In conclusion, we believe that it is appropriate to identify and utilize the component characteristics of soybean varieties in order to induce an increase in the functional component content of soybeans under drying conditions after soaking.

Keywords

Acknowledgement

본 과제(결과물)는 2021년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력 기반 지역혁신사업의 결과입니다(2021RIS-001).

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