Table 2. Susceptibility to antibiotics and enzyme activity of Lactobacillus plantarum KC3

Anti-microbial agents	Minimal inhibitory concentration (μg/mL)	EFSA suggested values	Enzyme	KC3
Amikacin	4	-	Alkaline phosphatase	01)
Gentamycin	1	16	Esterase (C4)	0
Kanamycin	16	64	Esterase lipase (C8)	1
Streptomycin	8	-	Lipase (C14)	0
Ampicillin	256	2	Leucine arylamidase	5
Penicillin-G	1	-	Valine arylamidase	4
Oxacillin	8	-	Cystinearylamidase	2
Bacitracin	32	-	Trypsin	0
Polymyxin B	128	-	α-Chymotrypsin	0
Ciprofloxacin	8	-	Acid phosphatase	2
Tetracycline	16	32	Naphtol-AS-BI-phosphohydrolase	2
Clindamycin	0.0156	2	α-Galactosidase	0
Erythromycin	0.125	1	β-Galactosidase	5
Rifampicin	1	-	β-Glucuronidase	0
Vancomycin	2,048	-	α-Glucosidase	3
Choloramphenicol	4	8	β-Glucosidase	4
			N-Acetyl-β-glucosaminidase	3
			α-Mannosidase	0
			α-Fucosidase	0

A value ranging from 0 to 5 is assigned to the standard color: Zero represents a negative; 5 represents a reaction of maximum intensity. Values 1 to 5 represent intermediate reactions depending on the level of intensity. The approximate activity may be estimated from the color strength: 1 Corresponds to the liberation of 5 nanomoles, 2 to 10 nanomoles, 3 to 20 nanomoles, 4 to 30 nanomoles, and 5 to 40 nanomoles or more.
EFSA, European Food Safety Authority.