Table 2.
Cytotoxicity of bark essential oil and 6,7-dehydroroyleanone against Hep G2 cells.
| Time (h) |
Specimen | IC50 (μg/mL) |
IC50 (µM) |
|---|---|---|---|
| 24 | Bark essential oil | 54.31 ± 0.60 b | - |
| 6,7-Dehydroroyleanone | 10.28 ± 0.18 d | 32.74 ± 0.57 C | |
| Etoposide * | 76.89 ± 0.34 a | 130.64 ± 0.58 A | |
| 48 | Bark essential oil | 30.27 ± 1.11 c | - |
| 6,7-Dehydroroyleanone | 5.22 ± 0.09 e | 16.62 ± 0.29 D | |
| Etoposide * | 29.68 ± 1.18 c | 50.43 ± 2.01 B |
Results are mean ± SD. *: Positive control. IC50 value: half maximal inhibitory concentration. Different letters (a–e; A–D) in the Table indicate significant difference at the level of p < 0.05 according to Scheffe’s test.