Table 3.
Enzyme inhibitory activities of the methanol and dichloromethane extracts of the aerial parts of sea heath (F. laevis). The results are expressed as half-maximal effective concentration (EC50) values (mg/mL).
| Enzyme | Methanol | Dichloromethane | Positive Control |
|---|---|---|---|
| α-glucosidase | 1.02 ± 0.01 b | 0.52 ± 0.04 a | 3.14 ± 0.23 c |
| α-amylase | >1 mg/mL | >1 mg/mL | 7.80 ± 0.17 |
| AChE | >1 mg/mL | >1 mg/mL | 0.01 ± 0.00 |
| BuChE | >1 mg/mL | >1 mg/mL | 0.32 ± 0.01 |
| Tyrosinase | >1 mg/mL | >1 mg/mL | 0.17 ± 0.01 |
Values represent the mean ± standard error of the mean (SEM) of at least three experiments, each performed in triplicate (n = 9). In the same line, values followed by different letters (a–c) are significantly different at p < 0.05 (student’s t-test). AChE: acetylcholinesterase; BuChE: butyrylcolinesterase. Positive controls: acarbose (α-amylase and α-glucosidase), galantamine (AChE and BuChE), and arbutin (tyrosinase).