. 2020 Sep 24;11:583070. doi: 10.3389/fmicb.2020.583070

TABLE 2.

Antimicrobial effects (%) of CFS from L. bulgaricus KLDS 1.0207 against E. coli ATCC25922 and S. aureus ATCC25923 after enzymatic and pH treatments.

Strain	Treatment	Control	Escherichia coli ATCC25922	Staphylococcus aureus ATCC25923
L. bulgaricus KLDS 1.0207	Catalase	100 ± 0^a	93.79 ± 0.45^b	90.14 ± 0.32^b
	Proteinase K	100 ± 0^a	100 ± 0^a	100 ± 0^a
	Papain	100 ± 0^a	100 ± 0^a	100 ± 0^a
	pH 3.5	100 ± 0^a	100 ± 0^a	100 ± 0^a
	pH 4.0	100 ± 0^a	100 ± 0^a	100 ± 0^a
	pH 5.0	100 ± 0^a	71.94 ± 0.28^c	68.91 ± 0.27^c
	pH 6.0	100 ± 0^a	9.82 ± 0.38^d	7.79 ± 0.39^d
	pH 6.5	100 ± 0^a	0 ± 0	0 ± 0
	pH 7.0	1000^a	0 ± 0	0 ± 0

Values were expressed as Mean ± SD. All values were determined in triplicate. Values with the same alphabet along the same row are not significantly different (P > 0.05).