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Published on: September 10, 2016
Using of Lactobacillus and Bifidobacterium to product the isoflavone aglycones in fermented soymilk
Que-King Wei1, Tong-Rong Chen, Jyun-Ting Chen
1Department of Food Nutrition, Chung Hua University of Medical Technology, 89 Wunhua 1st Street, Rende Township, Tainan 71703, Taiwan, ROC. weiqueking@yahoo.com.tw
Abstract:
The study determined isoflavone aglycone contents in soymilk and sugar-soymilk fermented with a single culture of two strains of Lactobacillus paracasei, two strains of Lactobacillus acidophilus, and one strain of Bifidobacterium longum respectively at 37 degrees C for 24 h. Isoflavone concentration was analyzed by HPLC. The viable count of bacteria in all of the fermented soymilk ranged from 7 to 9 log CFU/ml. The isoflavone aglycone had a significant increase of 62%-96% of isoflavone in all of the fermented soymilk compared to 17% in non-fermented soymilk (P<0.05). The five strains of microorganisms produced lesser amount of isoflavone aglycones in fermented sucrose-soymilk than in other fermented soymilk.
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