Optimization of Flavonoid Extraction in Dendrobium officinale Leaves and Their Inhibitory Effects on Tyrosinase Activity

Figure 3

(a)–(f) Monophenolase activity inhibition rates at 10, 30, 60, 90, 120, and 240 min, respectively. (g)–(l) Diphenolase activity inhibition rates at 10, 30, 60, 90, 120, and 240 min, respectively. P < 0.01 versus β-arbutin,P < 0.05 versus β-arbutin, ^##P < 0.01, ^#P < 0.05 self-comparison of flavonoids, ^&&P < 0.01, ^&P < 0.05 self-comparison of β-arbutin.

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