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Effects of (-)-4-hydroxysattabacin (4OH-ST), 1) on mushroom tyrosinase activity. Tyrosinase enzymatic activity was investigated using a mushroom tyrosinase assay with (a) l-tyrosine and (b) l-dopa (3,4-dihydroxyphenylalanine) as substrates. Data are presented as the mean ± SD (n = 3).
