Figure 5
From: Enhance nisin yield via improving acid-tolerant capability of Lactococcus lactis F44
Effects of single acid-tolerant gene overexpression (a) and co-expression (b) on acid resistant capacity of strains. 100 μL of serially diluted cells suspension samples were spread in triplicate on seed media agar plates and incubated at 30 °C for 48 h. *p < 0.05, **p < 0.01, t-test.
