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Table 5 Antibacterial activities of valonia and shell extracts from Q. variabilis against S. aureus and S. paratyphi A

From: Chemical composition, antibacterial activity and related mechanism of valonia and shell from Quercus variabilis Blume (Fagaceae) against Salmonella paratyphi a and Staphylococcus aureus

Samples Inhibition zone (mm) MIC (mg/ml) MBC (mg/ml)
S. aureus S. paratyphi A S. aureus S. paratyphi A S. aureus S. paratyphi A
Valonia VEE 10.89 ± 0.12a 12.37 ± 0.36a 0.625 1.25 0.625 1.25
VPEF ND 7.62 ± 0.43a > 10 > 10 > 10 > 10
VEAF 11.64 ± 0.43a 12.26 ± 0.12a 1.25 2.5 1.25 2.5
VBF 12.26 ± 0.14a 15.92 ± 0.44a 0.625 1.25 0.625 1.25
VWF 9.71 ± 0.18a 10.25 ± 0.14a 0.625 1.25 0.625 1.25
Shell SEE 8.99 ± 0.22a 9.62 ± 0.16a 2.5 5 2.5 5
SPEF ND ND > 10 > 10 > 10 > 10
SEAF 7.97 ± 0.11a 8.72 ± 0.14a 5 2.5 5 5
SBF 7.06 ± 0.01a 7.86 ± 0.11a 2.5 2.5 2.5 2.5
SWF 8.01 ± 0.05a 8.07 ± 0.09a 2.5 2.5 2.5 2.5
Punica granatum 10.22 ± 0.18a 10.30 ± 0.21a
Ellagic acid 10.24 ± 0.14a 11.45 ± 0.25a
DMSO
  1. Each value represented in tables are means ± SD (n = 3). acorrelation is significant at the 0.01 level compared with the negative control (DMSO). ND Not determined with this extract.