Table 1 The inhibition zones (mm) induced in Gram+ and Gram− bacteria using disc assay under the influence of different levels (0–10 µg/disc) of native (NEW) and methylated (MEW) egg white and the associated MIC values (marked by *)
Microorganisms | Substance dose (µg/disc) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
NEW | MEW | |||||||||
0.5 | 1 | 2 | 4 | 10 | 0.5 | 1 | 2 | 4 | 10 | |
Inhibition zone (mm) | ||||||||||
Gram+ | ||||||||||
L. monocytogens | – | – | – | 12 ± 0.2* | 14 ± 0.3 | 40 ± 0.9* | 48 ± 1.2 | 50 ± 1.3 | 51 ± 1.4 | 53 ± 1.4 |
L. ivanovii | – | – | – | – | 10 ± 0.1* | – | 41 ± 1.0* | 43 ± 1.0 | 47 ± 1.0 | 48 ± 1.2 |
S. pyogenes | – | – | – | – | – | – | 42 ± 1.1* | 45 ± 1.1 | 47 ± 1.1 | 50 ± 1.3 |
S. aureus | – | – | – | – | – | – | 35 ± 0.7* | 39 ± 0.8 | 43 ± 1.0 | 45 ± 1.1 |
B. subtilis | – | – | – | – | – | – | 18 ± 0.3* | 23 ± 0.5 | 23 ± 0.5 | 28 ± 0.7 |
B. cereus | – | – | – | – | 5 ± 0.04* | – | 12 ± 0.2* | 12 ± 0.1 | 13 ± 0.3 | 16 ± 0.4 |
Gram− | ||||||||||
K. oxytoca | – | – | – | – | – | 33 ± 0.6* | 45 ± 1.1 | 48 ± 1.2 | 48 ± 1.1 | 50 ± 1.3 |
P. aerugenosa | – | – | – | – | – | – | 18 ± 0.4* | 20 ± 0.5 | 21 ± 0.4 | 25 ± 0.4 |
S. typhimurium | – | – | – | – | – | – | 16 ± 0.3* | 19 ± 0.3 | 20 ± 0.4 | 23 ± 0.4 |
E. coli | – | – | – | – | – | – | 12 ± 0.2* | 19 ± 0.4 | 20 ± 0.5 | 22 ± 0.3 |