Table 1. Minimum inhibitory concentration (MIC) values against 8 antibiotics of Lactobacillus spp. used in this study

Strains	Minimum inhibitory concentration (MIC) values (mg/L) of lactic acid bacteria against antibiotics
EFSA guideline	Clindamycin	Chloramphenicol	Gentamicin	Kanamycin	Streptomycin	Ampicillin	Erythromycin	Tetracycline	Vancomycin
Lactobacillus rhamnosus	1	4	16	64	32	4	1	8	n.r
Lactobacillus reuteri	1	4	8	64	64	2	1	16	n.r
Lactobacillus rhamnosus ATCC53103	0.19±0.01^1)b	2.00±0.00^e	6.00±0.00^c	16.00±0.00^a	24.00±0.00^d	0.05±0.00^a	0.32±0.00^b	0.25±0.00^b	n.r
Lactobacillus rhamnosus L28	0.50±0.00^f	2.00±0.00^e	12.00±0.00^e	32.00±0.00^b	16.00±0.00^c	0.38±0.00^c	0.25±0.00^a	0.064±0.00^a	n.r
Lactobacillus reuteri 11-2	0.03±0.00^a	1.00±0.01^c	16.00±0.00^f	32.00±0.00^b	48.00±0.00^f	1.50±0.00^f	0.50±0.00^d	16.00±0.01^f	n.r
Lactobacillus rhamnosusM1-6M-1-1-1	0.38±0.00^e	1.00±0.00^c	8.00±0.00^d	192.00±0.00^d	12.00±0.00^b	0.38±0.00^c	2.00±0.00^f	1.50±0.00^d	n.r
Lactobacillus rhamnosusM1-6M-1-19	0.25±0.01^d	0.38±0.00^b	4.00±0.00^b	128.00±0.00^c	24.00±0.00^d	0.38±0.00^c	0.38±0.00^c	1.50±0.00^d	n.r
Lactobacillus rhamnosusM1-6M-1-1-14	0.5±0.00^f	2.00±0.00^e	6.00±0.00^c	128.00±0.00^c	16.00±0.00^c	0.75±0.01^e	0.38±0.00^c	0.75±0.00^c	n.r
Lactobacillus rhamnosusM1-6M-2-1-13	0.38±0.00^e	1.00±0.00^c	8.00±0.00^d	192.00±0.00^d	24.00±0.00^d	0.50±0.00^d	0.75±0.01^e	2.00±0.01^e	n.r
Lactobacillus rhamnosusM1-6M-2-1-17	0.23±0.00^c	0.25±0.00^a	1.00±0.00^a	16.00±0.00^a	6.00±0.01^a	0.23±0.00^b	0.32±0.00^b	256.00±0.00^g	n.r
Lactobacillus rhamnosusF2-6M-4-1-29	0.5±0.02^f	1.50±0.00^d	16.00±0.00^f	256.00±0.00^e	32.00±0.00^e	0.50±0.00^d	0.38±0.00^c	0.75±0.00^c	n.r

Values are mean±SD (n=3). Different superscript letters (^a-g) within the same column indicate significant differences (p<0.05) by Duncan’s multiple range test.