Production of Aglycone Isoflavones by Bifidobacterium longum KCTC 5734

Bifidobacterium longum KCTC 5734를 이용한 비배당체 이소플라본 생산

  • Kim, Jin-Sun (Dept. of Food & Nutrition, Kangwon National University) ;
  • Kang, Soon Ah (Dept. of Conversing Technology, Graduate School of Venture, Hoseo University) ;
  • Jang, Ki-Hyo (Dept. of Food & Nutrition, Kangwon National University)
  • 김진선 (강원대학교 식품영양학과) ;
  • 강순아 (호서대학교 벤처정보대학 융합공학과) ;
  • 장기효 (강원대학교 식품영양학과)
  • Received : 2014.09.01
  • Accepted : 2014.10.11
  • Published : 2014.10.31

Abstract

This study was performed to investigate the possibility of using three commercial bifidobacteria as a starter for soybean paste fermentation. In order to determine susceptibility to inhibition by high concentrations of salt in soybean paste, cell growth of three strains in sterilized soybean paste was analyzed. Bifidobacterium breve KCTC 5081 was the most resistant to salt, whereas Bifidobacterium bifidum KCTC 5082 showed low cell viability. Conversion efficiencies from glycoside isoflavone to aglycon isoflavone in soybean paste ranged from 11.3~28.6%, with Bifidobacterium longum KCTC 5734 the best strain. Therefore, B. longum KCTC 5734 may be used as a starter for Cheonggukjang fermentation, which is low-salt fermented soybean paste.

Keywords

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