Abstract
In this study, the fermentation characteristics and functional properties of lactic acid bacteria-malted vinegar (LAB-MV) were investigated during the fermentation period. Changes in the components (organic acids, free sugars, free amino acids, β-glucan, and gamma-aminobutyric acid (GABA)) of MV (BWAF0d, BWAF10d, BWAF20d) and LAB-MV (LBWAF0d, LBWAF10d, LBWAF20d) were analyzed according to the fermentation time. The amounts of β-glucan and GABA in LBWAF20d were greater than those in BWAF20d (122.00μg/mL, 83.06μg/mL and 531.00μg/mL, 181.31μg/mL, respectively). The ACE1 and HMG-CoA reductase inhibitory activities of LBWAF20d were 98.16% (1/20 dilution factor, DF) and 91.01% (1/25 DF), respectively. The lipid accumulation ratio and total cholesterol levels in HepG2 cells treated with LBWAF20d (1/200 DF) were reduced by 45.85% and 54.48%, respectively, compared to those in the untreated group. These results suggest that LAB-MV, which comprises barley wine manufactured from LAB and yeast, may improve hepatic lipid metabolism.
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