Skip to main content

Table 4 Antibacterial activity of cell-free supernatant (CFS) of the LAB strains

From: Sustainable microbial cell nanofactory for zinc oxide nanoparticles production by zinc-tolerant probiotic Lactobacillus plantarum strain TA4

StrainFinal pH of CFSZone of inhibition (mm)
Gram-negativeGram-positive
E. coliSalmonella sp.S. aureusS. epidermidis
TA43.41 ± 0.0519.33 ± 0.58a16.67 ± 1.15b19.00 ± 1.00a17.67 ± 0.58a
SC83.85 ± 0.1419.00 ± 1.00a20.00 ± 0.00a13.00 ± 0.00b11.00 ± 0.00c
FF23.48 ± 0.0318.33 ± 0.58a15.00 ± 1.00b18.67 ± 0.58a16.00 ± 1.00ab
MPJ103.36 ± 0.0318.00 ± 0.00a15.00 ± 0.00b17.67 ± 0.58a15.00 ± 1.00b
  1. The results are expressed as mean (n = 3) ± SD, and values within the same column with different superscript letters indicate statistical differences in each strain according to Tukey’s test at p < 0.05