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Tyrosinase inhibitory activity of the isolated compounds 1−7
| Compounds | IC50 (µM)a |
|---|---|
| 1 | 6.7 ± 0.8 |
| 2 | >50 |
| 3 | >50 |
| 4 | 2.0 ± 0.1 |
| 5 | 22.0 ± 2.5 |
| 6 | 7.5 ± 0.5 |
| 7 | >50 |
| Kojic acidb | 44.6 ± 0.4 |
a The assay was executed in triplicate
b Positive control used for enzymatic inhibition assay
