Fig. 2: Enzymatic activity of various LAB strains for the formation of aglycones from 7-O-glucosides present in citric acid hydrolyzed citrus extract.

a Representative images of L. plantarum, L. rhamnosus, L. brevis and L. paracasei showing gram-positive rods. Scale bar: 10 µm. b Concentrations of flavanones in citric acid hydrolyzed extract (CAE) after 24 h incubation with each strain at 37 °C. Control refers to the sample without bacteria. Data are mean ± SD of n = 6 samples/strain. Differences to control are analyzed by Kruskal-Wallis’s test with Dunn’s multiple comparisons test, with exception of data set for hesperetin which is analyzed by ordinary one-way ANOVA with Dunnett’s multiple comparison test.