Table 1.
Antimicrobial properties (MIC-mg/mL) of the isolated compounds, crude extracts and fractions from the methanol extracts of Croton menyharthii (n = 3).
| Sample | Antimicrobial MIC (mg/mL) | ||||
|---|---|---|---|---|---|
| B.s. | E.c. | K.p. | S.a. | C.a. | |
| Myricetrin-3-O-rhamnoside (1) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Quercetin-3-O-rhamnoside (2) | 0.13 | >0.25 | >0.25 | >0.25 | 0.25 |
| Quercetin (3) | 0.03 | >0.25 | 0.25 | >0.25 | 0.02 |
| Trans-N-(p-coumaroyl) serotonin (4) | 0.25 | 0.25 | 0.25 | 0.25 | 0.13 |
| Croton menyharthii crude | 3.13 | 1.56 | 3.13 | 1.56 | 6.25 |
| Croton menyharthii hexane | 0.78 | 0.78 | 1.56 | 0.78 | 0.78 |
| Croton menyharthii DCM | 0.39 | 0.78 | 1.56 | 0.78 | 0.78 |
| Croton menyharthii ethyl acetate | 0.39 | 0.39 | 0.39 | 0.78 | 0.39 |
| Croton menyharthii butanol | 1.56 | 3.13 | 1.56 | 3.13 | 3.13 |
| Neomycin | 1.6 × 10−3 | 0.8 × 10−3 | 0.8 × 10−3 | 1.6 × 10−3 | |
| Amphotericin B | 9.77 × 10−3 | ||||
B.s.: Bacillus subtilis; E.c.: Escherichia coli; K.p.: Klebsiella pneumonia; S.a.: Staphylococcus aureus, C.a.: Candida albicans. Samples with MIC values written in bold font are considered to be very active (MIC < 1 mg/mL).