Microbial Cell Factories

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

Strain	Final pH of CFS	Zone of inhibition (mm)
		Gram-negative		Gram-positive
		E. coli	Salmonella sp.	S. aureus	S. epidermidis
TA4	3.41 ± 0.05	19.33 ± 0.58^a	16.67 ± 1.15^b	19.00 ± 1.00^a	17.67 ± 0.58^a
SC8	3.85 ± 0.14	19.00 ± 1.00^a	20.00 ± 0.00^a	13.00 ± 0.00^b	11.00 ± 0.00^c
FF2	3.48 ± 0.03	18.33 ± 0.58^a	15.00 ± 1.00^b	18.67 ± 0.58^a	16.00 ± 1.00^ab
MPJ10	3.36 ± 0.03	18.00 ± 0.00^a	15.00 ± 0.00^b	17.67 ± 0.58^a	15.00 ± 1.00^b

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

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