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KMID : 0613820160260080928
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Journal of Life Science
2016 Volume.26 No. 8 p.928 ~ p.935
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Comparison of Antioxidant Activities of Pileus and Stipe from White Beech Mushrooms (Hypsizygus marmoreus)
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Kim Su-Cheol
Kwon Hyun-Sook
Kim Chul-Hwan
Kim Hye-Soo
Lee Chang-Yun
Cho Soo-Jeong
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Abstract
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Hypsizygus marmoreus (white cultivar), also called white beech mushrooms, are edible mushrooms commercially cultivated in Korea and Japan. This study was carried out to evaluate the antioxidant properties of H. marmoreus. H. marmoreus fruit bodies were divided into pileus and stipe. The pileus and stipe were extracted into water and 80% ethanol and their antioxidant activities were analyzed. The total polyphenol content was highest in the water extract (pileus 1137.39±0.38 mg of GAE (gallic acid equivalents)/100 g, stipe 700.86±0.06 mg of GAE/100 g) compared to the ethanol extract (pileus 923.47±0.18 mg of GAE/ 100 g, stipe 324.05±0.03 mg of GAE/100 g). Ethanol extracts from pileus showed better scavenging ability on DPPH (47.32±0.23% at 10 mg/ml) and ABTS (57.33±0.10% at 10 mg/ml) than the stipe and water extract groups. Water extract from pileus were more effective in reducing power and ORAC (oxygen radical absorbance capacity) value than stipe and ethanol extract. The toxicity of water and ethanol extracts was investigated using WST-1 (Water Soluble Tetrazolium salt) assay on the mouse macrophage cell line RAW 264.7. Overall, total polyphenol content and antioxidant activities of extracts from H. marmoreus increased in a dose dependent manner while pileus was showed better total polyphenol content and antioxidant activities than stipe.
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KEYWORD
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Antioxidant property, Hypsizygus marmoreus (white cultivar), pileus, stipe, white beech mushroom
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