Table 2.
Antioxidant activity (IC50 in µg/mL), cytotoxicity against Vero cells (LC50 in µg/mL) and selectivity index (SI) of Grewia flava acetone extracts.
| Selectivity index (LC50/MIC) | ||||||
| Extracts | IC50 (µg/mL) | LC50 (µg/mL) | Bc | Ec | Sa | ST |
| Berries | 222.34±35.32a | 551.68±22.55a | 0.41 | 4.03 | 0.50 | 0.50 |
| Leaves | 123.87±26.18b | 507.21±12.65b | 7.88 | 1.00 | 2.33 | 1.00 |
| Bark | 250.53±43.08c | 452.69±33.02c | 1.46 | 2.07 | 2.14 | 0.11 |
| Roots | 70.09±17.15d | 402.13±23.02d | 5.74 | 1.00 | 2.33 | 0.05 |
| Doxorubicin | nd | 3.02±0,03e | nd | nd | nd | nd |
| Vitamin C | 9.14±3.24e | nd | nd | nd | nd | nd |
BC: Bacillus cereus, EC: Escherichia coli, ST: Staphylococcus aureus, ST: Salmonella typhimurium. nd = not detected. Data represent the mean ± SD of three independent experiments; values with different letters are significantly different at p< 0.05.