Isolation of Pediococcus acidilacticiKp10 with ability to secrete bacteriocin-like inhibitory substance from milk products for applications in food industry

Table 5 Growth inhibition of P. acidilactici Kp10 by disc diffusion method

Antibiotic		Inhibition zone diameter
	Disc content	Size (mm)	≤15 mm (R)	16–20 mm (I)	≥21 mm (S)
Penicillin G	2 Units	24 (0)			+
Penicillin G	10 Units	26.5 (0.07)			+
Erythromycin	15 μg	32 (0)			+
Erythromycin	10 μg	30 (0)			+
Ceftriaxone	30 μg	33.08 (1.31)			+
Lincomycin	10 μg	0 (0)	+
Colistin sulphate	10 μg	0 (0)	+
Streptomycin	10 μg	18.63 (0.88)		+
Amikacin	30 μg	24.83 (0.25)			+
Cloxacillin	5 μg	19 (0)		+
Ciprofloxacin	10 μg	30 (0)			+
Norfloxacin	10 μg	24 (0)			+
Chloramphenicol	30 μg	32.28 (0.4)			+
Cefuroxime sodium	30 μg	34.25 (0.35)			+
Tetracycline	30 μg	29.5 (0.07)			+
Tetracycline	10 μg	24 (0)			+
Nalidixic acid	30 μg	31 (0)			+
Ampicillin	25 μg	32 (0)			+
Gentamycin	10 μg	22.5 (0.71)			+
Gentamycin	30 μg	28 (0)			+
Mecillinam	25 μg	19.72 (0.4)		+
Nitrofurantoin	300 μg	30 (0)			+
Sulfamethoxazole/ trimethoprim	25 μg	31 (0.14)			+
Vancomycin	30 μg	24.75 (0.04)			+
Bacitracin	10 μg	0 (0)	+
Novobiocin	30 μg	34.5 (0.07)			+
Kanamycin	30 μg	24.15 (0.21)			+
Neomycin	30 μg	20 (0)		+
Polymixin B	300 Units	0 (0)	+
Oxytetracycline	30 μg	21 (0)			+
Cefamandole	30 μg	12 (0)	+

For all experiments coefficient of variation was ≤5 %. Results (zone of inhibition) are expressed as mean (SD).
R, resistant; I, intermediate; S, susceptible.

ISSN: 1471-2180