Table 3.
Antibacterial activity of different solvent extracts from the stems of Passiflora species.
Bacteria | Plant extracts inhibition zone diameter in mm | STD | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Passiflora edulis | Passiflora quadrangularis | Passiflora maliformis | ||||||||
PE | ACT | MET | PE | ACT | MET | PE | ACT | MET | ||
Gram-positive bacteria | ||||||||||
S. aureus | 7.3 ± 0.2e | 8.3 ± 0.2e | 9.3 ± 0.3de | 9.6 ± 0.6de | 11.7 ± 0.5cd | 16.2 ± 0.2b | 9.0 ± 0.1e | 13.4 ± 0.1c | 14.7 ± 0.5bc | 24.7 ± 0.6a |
B. cereus | 10.4 ± 0.2bcd | 8.7 ± 0.2d | 12.5 ± 0.7b | 9.5 ± 0.4cd | 8.2 ± 0.1d | 10.1 ± 0.6bcd | 8.5 ± 0.2d | 9.6 ± 0.2cd | 11.3 ± 0.3bc | 28.6 ± 0.7a |
B. subtilis | 7.0 ± 0.1f | 10.3 ± 0.3d | 11.7 ± 0.5cd | 8.5 ± 0.4f | 10.4 ± 0.2d | 13.3 ± 0.3c | 10.1 ± 0.6de | 15.1 ± 0.2b | 15.4 ± 0.1b | 30.8 ± 0.8a |
L. monocytogenes | 11.3 ± 0.3b | 11.0 ± 0.4b | 11.2 ± 0.8b | 13.0 ± 0.5b | 10.9 ± 0.5b | 12.1 ± 1.0b | 10.7 ± 0.8b | 11.0 ± 0.4b | 11.2 ± 0.9b | 21.7 ± 0.5a |
S. gallolyticus | 10.0 ± 0.5b | 9.7 ± 0.1b | 10.4 ± 0.1b | 10.7 ± 0.5b | 10.3 ± 0.4b | 11.5 ± 0.6b | 9.7 ± 0.4b | 10.3 ± 0.3b | 10.7 ± 0.1b | 28.3 ± 0.2a |
Gram-negative bacteria | ||||||||||
P. aeruginosa | 8.1 ± 0.3b | 11.3 ± 0.3a | 7.8 ± 0.2b | 10.9 ± 0.2a | 10.5 ± 0.3a | 7.2 ± 0.5b | 6.6 ± 0.4b | 6.8 ± 0.7b | 6.5 ± 0.6b | 12.3 ± 0.6a |
K. oxytoca | 9.4 ± 0.2c | 12.1 ± 0.5b | 8.1 ± 0.2cd | 11.9 ± 0.9b | 11.4 ± 0.3b | 8.2 ± 0.5cd | 7.5 ± 0.5d | 7.8 ± 0.1cd | 7.9 ± 0.3cd | 26.2 ± 0.5a |
P. vulgaris | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 23.3 ± 0.6 |
S. enteritidis | 0.0 ± 0.0 | 0.0 ± 0.0 | 7.3 ± 0.2b | 0.0 ± 0.0 | 0.0 ± 0.0 | 7.4 ± 0.3b | 0.0 ± 0.0 | 0.0 ± 0.0 | 6.6 ± 0.5b | 21.5 ± 0.2a |
E. coli | 10.3 ± 0.4ab | 8.4 ± 0.2b | 11.8 ± 0.3a | 7.6 ± 0.6b | 7.5 ± 0.5a | 8.0 ± 0.2b | 9.5 ± 0.1ab | 7.6 ± 0.4b | 7.5 ± 0.3b | 11.3 ± 0.1a |
Different superscript letters within the same row indicate significant differences (Tukey's test, P < 0.05) of the means for each solvent extract of the Passiflora. PE: petroleum ether; ACT: acetone; MET: methanol; STD: standard (chloramphenicol).