Abstract
This study was conducted to examine the antioxidant activities of extracts derived with different extraction methods (HE, hot water extraction; UE, ultrasonic extraction; and PE, pressured extraction) from Phellinuslinteus mycelium in Mori ramulus. The extraction yield of PE (7.73%) was higher than that of UE (6.03%) and of HE (5.44%). The total phenolic and flavonoid contents of PE were 9.87 g/100 g and 1.90 g/100 g, respectively. The oxygen radical absorbance capacity (ORAC) of PE (769.63 μM/g FW) was higher than that of HE (622.96 μM/g FW) and of UE (249.06 μM/g FW). The DPPH and ABTS radical scavenging activities of PE at 1,000 μg/mL were 35.85% and 51.42%, respectively. The superoxide radical scavenging activity of PE, 29.16-93.89%, was higher than that of other extracts. The ferric-reducing antioxidant power and the reducing power of PE were 180.60-607.93 μM and 0.14-0.51, respectively. The tyrosinase inhibition activity of PE (9.66-24.05%) improved with an increase in the treatment concentration. The antioxidant and tyrosinase inhibition activities of PE were significantly higher than those of the other extracts. In conclusion, we provided experimental evidence that Phellinus linteus mycelium extracts from Mori ramulus have potential as functional materials.
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