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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
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- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제25권 제4호
- 발행연도
- 2015.1
- 수록면
- 469 - 478 (10page)
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In spite of the reported probiotic effects, Bifidobacterium bifidum BGN4 (BGN4) showed no β- glucosidase activity and failed to biotransform isoflavone glucosides into the more bioactive aglycones during soy milk fermentation. To develop an isoflavone-biotransforming BGN4, we constructed the recombinant B. bifidum BGN4 strain (B919G) by cloning the structural β- glucosidase gene from B. lactis AD011 (AD011) using the expression vector with the constitutively active promoter 919 from BGN4. As a result, B919G highly expressed β- glucosidase and showed higher β-glucosidase activity and heat stability than the source strain of the β-glucosidase gene, AD011. The biotransformation of daidzin and genistin compounds using the crude enzyme extract from B919G was completed within 4 h, and the bioconversion of daidzin and genistin in soy milk during fermentation with B919G also occurred within 6 h, which was much faster and higher than with AD011. The incorporation of this β-glucosidaseproducing Bifidobacterium strain in soy milk could lead to the production of fermented soy milk with an elevated amount of bioavailable forms of isoflavones as well as to the indigenous probiotic effects of the Bifidobacterium strain.
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참고문헌 (20)
참고문헌 신청
Amaretti A / 2013 / Antioxidant properties of potentially probiotic bacteria: in vitro and in vivo activities / Appl. Microbiol. Biotechnol 97 : 809 ~ 817
Champagne CP / 2010 / Effect of fermentation by pure and mixed cultures of Streptococcus thermophilus and Lactobacillus helveticus on isoflavone and B-vitamin content of a fe
Chien HL / 2006 / Transformation of isoflavone phytoestrogens during the fermentation of soymilk with lactic acid bacteria and bifidobacteria / Food Microbiol 23 : 772 ~ 778
Dong H / 2012 / Comparative effects of six probiotic strains on immune function in vitro / Br. J. Nutr 108 : 459 ~ 470
Donkor ON / 2008 / Production of beta-glucosidase and hydrolysis of isoflavone phytoestrogens by Lactobacillus acidophilus, Bifidobacterium lactis, and Lactobacillus casei in
Champagne CP / 2010 / Effect of fermentation by pure and mixed cultures of Streptococcus thermophilus and Lactobacillus helveticus on isoflavone and B-vitamin content of a fe
Chien HL / 2006 / Transformation of isoflavone phytoestrogens during the fermentation of soymilk with lactic acid bacteria and bifidobacteria / Food Microbiol 23 : 772 ~ 778
Dong H / 2012 / Comparative effects of six probiotic strains on immune function in vitro / Br. J. Nutr 108 : 459 ~ 470
Donkor ON / 2008 / Production of beta-glucosidase and hydrolysis of isoflavone phytoestrogens by Lactobacillus acidophilus, Bifidobacterium lactis, and Lactobacillus casei in
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