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Deglycosylation patterns of isoflavones in soybean extracts inoculated with two enzymatically different strains of lactobacillus species.

Abstract：

:Microorganism selection is critical to deglycosylation in soybean fermentation for producing beneficial phytochemicals. This study investigated isoflavone bioconversion in soybean extract inoculated with Lactobacillus plantarum K2-12 and Lactobacillus curvatus JD0-31 exhibiting different enzyme activities. L. plantarum showed higher esterase (C4), esterase (C8), β-galactosidase, α-glucosidase, β-glucosidase, and N-acetyl-β-glucosaminase activities. We found that isoflavone bioconversion was distinguished into isoflavone backbone structure types. Malonyl- and acetyl- types of isoflavones except for malonyl daidzin were not significantly differed their contents between lactobacilli. Deglycosylating severity was observed in malonyl genistin in both lactobacilli, resulting mass production of genistein. On the other hand, daidzein glycosides were dependable to lactobacilli, in which L. plantarum efficiently degraded malonyl daidzin and daidzin in fast time. Glycitein was most degradable among the three aglycones by fermentation. These results suggest that efficient control of isoflavone deglycosylation by Lactobacillus species should be controlled to the inoculation period and select target isoflavones.

journal_name

Enzyme Microb Technol

journal_title

Enzyme and microbial technology

authors

Lim YJ,Lim B,Kim HY,Kwon SJ,Eom SH

doi

10.1016/j.enzmictec.2019.109394

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

109394

eissn

0141-0229

issn

1879-0909

pii

S0141-0229(19)30132-2

journal_volume

132

pub_type

杂志文章

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