Improving bioactive properties of peach juice using Lactobacillus strains fermentation: Antagonistic and anti-adhesion effects, anti-inflammatory and antioxidant properties, and Maillard reaction inhibition.

Abstract

The purpose of the current study was to evaluate the antimicrobial activity of Lactobacillus acidophilus PTCC 1643 and Lactobacillus fermentum PTCC 1744 against Shigella flexneri PTCC 1865 in fermented peach juice, as well as the anti-adhesion ability on epithelial Caco-2 cells. Moreover, the biological activities of peach juice were examined. We found that the studied Lactobacillus strains effectively inhibited the growth of S. flexneri during the peach juice fermentation. In addition, L. acidophilus revealed more anti-adhesion ability than L. fermentum. The inhibition of the Maillard reaction increased from 4.10% to 36.70% and 33.00% in L. acidophilus and L. fermentum treatments, respectively. Additionally, the ferrous reducing power, superoxide anion antiradical and anti-inflammatory activities of the beverage augmented during the fermentation period. These findings may be helpful for inhibition of foodborne pathogens by Lactobacillus strains and production of fruit-based fermented beverages with high functional and nutritional value.

Keywords: Anti-adhesion; Biological activities; Lactobacillus acidophilus; Lactobacillus fermentum; Peach juice.