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Table 3 Antibiotic susceptibility of L. lactis analysed using agar-disc diffusion method

From: Lactococcus lactis M4, a potential host for the expression of heterologous proteins

Antibiotic Diameter of inhibition zone of strains (mm)
  M2 M4 M5 M6 M11 M12 M14 M16 MG1363 ATCC 11454
Ampicillin 23 23 22 23 24 26 23 25 21 24
Bacitracin 14 12 13 12 13 18 13 14 16 16
Chloramphenicol 17 19 16 16 15 19 17 19 18 14
Gentamycin 13 13 11 11 12 13 13 12 11 10
Erythromycin 20 20 20 18 21 22 19 21 20 21
Nitrofurantoin 13 13 11 11 10 11 10 11 13 11
Kanamycin 14 13 11 11 13 13 13 12 11 11
Cefamandole 19 15 17 18 17 20 17 18 16 20
Neomycin 11 11 10 10 12 12 11 11 10 10
Nalidixic acid 0 0 0 0 0 0 0 0 0 0
Novobiocin 13 14 13 14 12 18 16 13 15 15
Oxytetracycline 10 10 21 23 10 23 18 10 24 25
Penicillin G 23 20 21 22 23 24 22 22 21 24
Polymyxin B 0 0 0 0 0 0 0 0 0 0
Streptomycin 8 8 8 7 8 10 9 9 8 9
Tetracycline 8 8 20 20 8 20 20 8 23 21
  1. The diameter (in mm) of the inhibition zones were the average of duplicates.