TABLE 3.
Inhibitory potential (IP) of the pulp and seed phenolic extracts of S. cumini (L.) Skeels against the evaluated bacteria.
Bacteria |
Phenolic extract |
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Pulp |
Seed |
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Concentration (mg GAE/g of pulp) | Extract dilution | IP | Concentration (mg GAE/g of seed) | Extract dilution | IP | |
E. coli | 0.78 | 1:2 | 7.07 | 11.29 | 1:2 | >8.00 |
0.39 | 1:4 | 1.60 | 5.65 | 1:4 | 6.86 | |
0.19 | 1:8 | 1.49 | 2.82 | 1:8 | 3.90 | |
P. aeruginosa | 0.78 | 1:2 | 3.50 | 11.29 | 1:2 | >8.00 |
0.39 | 1:4 | 1.50 | 5.65 | 1:4 | 6.09 | |
0.19 | 1:8 | 0.97 | 2.82 | 1:8 | 2.22 | |
Salmonella Typhimurium | 0.78 | 1:2 | 3.82 | 11.29 | 1:2 | >8.00 |
0.39 | 1:4 | 1.58 | 5.65 | 1:4 | >8.00 | |
0.19 | 1:8 | 1.07 | 2.82 | 1:8 | 4.18 | |
L. monocytogenes | 0.78 | 1:2 | 3.83 | 11.29 | 1:2 | >8.00 |
0.39 | 1:4 | 1.94 | 5.65 | 1:4 | >8.00 | |
0.19 | 1:8 | 0.81 | 2.82 | 1:8 | 4.11 | |
S. aureus | 0.78 | 1:2 | 3.89 | 11.29 | 1:2 | >8.00 |
0.39 | 1:4 | 0.76 | 5.65 | 1:4 | >8.00 | |
0.19 | 1:8 | N.I. | 2.82 | 1:8 | >8.00 | |
1.41 | 1:16 | >8.00 |
GAE, gallic acid equivalent. IP, inhibitory potential equal to 1 indicates 10-fold inhibition compared to the control, due to logarithmic scale; N.I., no inhibition. *We considered no inhibition when bacterial populations between treatment and control differed by less than twofold (IP ¡ 0.301).