Safety Characterization and Antimicrobial Properties of Kefir-Isolated Lactobacillus kefiri

Table 1

Minimum inhibitory concentrations (MIC) for antibiotic resistance.

Antibiotics	MIC (mg L^−1)
	Breakpoints^a	CIDCA 8321	CIDCA 8345	CIDCA 8348	CIDCA 83115	CIDCA 83111	CIDCA 83113
Ampicillin	2	<0.032	<0.032	<0.032	<0.032	<0.032	<0.032
Clindamycin	1	<0.032	<0.032	<0.032	<0.032	<0.032	<0.032
Chloramphenicol	4	8	16	2	2	1	2
Erythromycin	1	<0.125	<0.125	<0.125	<0.125	<0.125	<0.125
Gentamicin	16	<0.5	<0.5	<0.5	<0.5	<0.5	<0.5
Kanamycin	32	<2	<2	<2	<2	<2	<2
Streptomycin	64	<0.5	<0.5	<0.5	<0.5	<0.5	<0.5
Tetracycline	8	<0.125	<0.125	4	2	4	<0.125

 ^aThese are the recommended breakpoints for heterofermentative lactobacilli EFSA Panel on Additives and Products or Substances used in Animal Feed (2012) [20].