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Tyrosinase inhibitory effect of the methanol (ME), water/methanol (HA), dichloromethane (DCM) and supercritical fluid (SFE) extracts, along with the essential oil (EO) of S. sipylea at 150 μg/mL. The values are the mean of three replicate determinations ± standard error. Kojic acid was used as a positive control at 150 μg/mL. Statistical analysis was performed by one-way ANOVA, and Dunnett’s test was employed to compare extracts with the positive control, with p < 0.0001 (****).
