Table 5.
Antimicrobial activity of different solvent extracts from seeds of P. pinnata.
| Tested organisms | Seeds extracts | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Absolute Ethanol | Aqueous ethanol | Absolute methanol | Aqueous methanol | Absolute acetone | Aqueous acetone | Deionized water | Amoxicillin | Flumequine | |
| Diameter of inhibition zone (mm) | |||||||||
| Pseudomonas stutzeri | 9.3 ± 0.3 bc | 10.3 ± 0.4 bc | 9.0 ± 0.41 bc | 11.3 ± 0.3 b | 7.5 ± 0.3 bc | 7.8 ± 0.3 bc | 7.0 ± 0.2 c | 24.2 ± 1.2 a | ----- |
| Pseudomonas aeruginosa | 9.0 ± 0.2 bc | 9.8 ± 0.3 bc | 8.0 ± 0.3 bc | 10.0 ± 0.2 b | 7.0 ± 0.3 bc | 7.2 ± 0.3 bc | 6.5 ± 0.2 c | 21.3 ± 0.9 a | ----- |
| Escherichia coli | 8.4 ± 0.2 bc | 9.0 ± 0.3 b | 7.9 ± 0.4 bc | 8.8 ± 0.3 b | 6.5 ± 0.3 bc | 7.0 ± 0.2 bc | 6.2 ± 0.1 c | 18.2 ± 1.0 a | ----- |
| Aspergillus orazae | 10.6 ± 0.3 b | 11.1 ± 0.4 b | 10.1 ± 0.4 ab | 11.5 ± 0.3 b | 9.0 ± 0.4 b | 9.5 ± 0.3 bc | 8.2 ± 0.3 c | ----- | 28.5 ± 1.2 a |
| Aspergillus niger | 10.2 ± 0.4 b | 10.8 ± 0.4 b | 10.0 ± 0.5 b | 11.2 ± 0.3 b | 7.9 ± 0.4 c | 7.5 ± 0.3 c | 7.1 ± 0.2 c | ----- | 26.2 ± 1.2 a |
| Fusarium solani | 9.5 ± 0.5 bc | 9.9 ± 0.3 b | 9.1 ± 0.5 bc | 10.1 ± 0.4 b | 6.8 ± 0.3 c | 7.2 ± 0.2 cc | 6.4 ± 0.1 c | ----- | 24.3 ± 1.1 a |
| Minimum inhibitory concentration (mg/mL) | |||||||||
| Pseudomonas stutzeri | 109 ± 20 ab | 105 ± 4 b | 112 ± 2 ab | 106 ± 2 b | 135 ± 2 a | 119 ± 2 ab | 125 ± 2 ab | 23 ± 1 c | ----- |
| Pseudomonas aeruginosa | 104 ± 3 c | 102 ± 4 a | 120 ± 4 b | 109 ± 4 c | 140 ± 3 a | 122 ± 4 b | 130 ± 2 ab | 25 ± 1 c | ----- |
| Escherichia coli | 118 ± 2 ab | 101 ± 3 b | 126 ± 2 ab | 112 ± 3 ab | 146 ± 2 a | 127 ± 4 ab | 141 ± 4 a | 32 ± 2 c | ----- |
| Aspergillus orazae | 95 ± 3 b | 96 ± 3 b | 101 ± 4 ab | 93 ± 2 b | 112 ± 4 a | 108 ± 2 ab | 114 ± 2 a | ----- | 20 ± 1 c |
| Aspergillus niger | 97 ± 2 b | 98 ± 4 b | 105 ± 2 a | 98 ± 1 b | 117 ± 3 a | 110 ± 3 ab | 117 ± 2 a | ----- | 28 ± 1 c |
| Fusarium solani | 99 ± 3 b | 102 ± 3 b | 107 ± 3 a | 101 ± 2 b | 118 ± 2 ab | 113 ± 2 ab | 132 ± 2 a | ----- | 33 ± 2 c |
Values are mean ± SD of three separate experiments. Different superscript letters within the same row indicate significant (p < 0.05) differences of means within the extracting solvents.