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. 2011 Apr 15;16(4):3197-211.
doi: 10.3390/molecules16043197.

Antioxidant properties and antioxidant compounds of various extracts from the edible basidiomycete Grifola frondosa (Maitake)

Jan-Ying Yeh  1 , Li-Hui Hsieh, Kaun-Tzer Wu, Cheng-Fang Tsai
Affiliations

Antioxidant properties and antioxidant compounds of various extracts from the edible basidiomycete Grifola frondosa (Maitake)

Jan-Ying Yeh et al. Molecules. .

Abstract

Grifola frondosa is an edible mushroom currently available in Taiwan. Ethanolic, cold-water and hot-water extracts were prepared and their antioxidant properties were investigated. At 1 mg/mL, G. frondosa T1 and T2 cold-water extracts showed high reducing powers of 1.02 and 0.50, respectively. Chelating abilities on ferrous ions of G. frondosa T1 and T2 were higher for cold-water extracts than for ethanolic and hot-water extracts. For the scavenging ability on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, G. frondosa T1 and T2 extracts were effective in the following order: ethanolic > hot-water > cold-water. The G. frondosa hot-water extract showed high scavenging ability on superoxide anions. Total phenols, flavonoids, ascorbic acid and α-tocopherol are the major antioxidant components found in the various G. frondosa extracts. Based on EC(50) values (<20 mg/mL) obtained, the various extracts from G. frondosa investigated in this study display potent antioxidative properties.

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Figures

Figure 1
Figure 1
Reducing power of various extracts from G. frondosa T1 (A), and G. frondosa T2 (B). Each value is expressed as mean ± S.D. (n = 3).
Figure 2
Figure 2
Scavenging ability of various extracts from G. frondosa T1 (A), and G. frondosa T2 (B) on DPPH radicals. Each value is expressed as mean ± S.D. (n = 3).
Figure 3
Figure 3
Chelating ability of various extracts from G. frondosa T1 (A), and G. frondosa T2 (B) on ferrous ions. Each value is expressed as mean ± S.D. (n = 3).
Figure 4
Figure 4
Scavenging ability of cold-water and hot-water extracts from G. frondosa T1 and T2 on superoxide radicals. Each value is expressed as mean ± S.D. (n = 3).
See this image and copyright information in PMC

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