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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2020034161
pages 367-377

Antioxidant Activities of Selected Medicinal Mushroom Submerged Cultivated Mycelia

Yu-Ming Liu
Department of Food Science and Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan, R.O.C.
Yi-Hsin Lai
Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, R.O.C.
Fu-Mi Hsieh
Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, R.O.C.
Yi-Min Chiu
Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, R.O.C.
Solomon P. Wasser
International Centre for Biotechnology and Biodiversity of Fungi Institute of Evolution and Faculty of Natural Sciences University of Haifa, Mt. Carmel, Haifa 31905, Israel
Jeng-Leun Mau
Department of Food Science and Biotechnology, National Chung-Hsing University, 145 Xingda Road, Taichung 40227, Taiwan, R.O.C.

RÉSUMÉ

Medicinal mushrooms fruiting bodies have been used as food or medicine for years but cultured mycelium is faster to grow and costs less. This research studied the antioxidant activities of three species (five strains) of medicinal mushroom mycelia (Cordyceps militaris, Ganoderma tsugae I and II, Trametes versicolor I and II). Two-stage extractions were performed: first the sample was extracted with 70% ethanol, and then the residue was extracted with 95°C hot water. Both ethanolic and hot water extracts showed effective concentration (EC50) values of 0.29-4.22 mg/mL, indicating that these extracts were remarkably effective in antioxidant activities. The ethanolic extracts displayed more effective reducing power, scavenging, and chelating ability (EC50 0.33-2.37 mg/mL) than hot water extracts (EC50 0.58-4.22 mg/g). Besides, ethanolic extracts contained higher total phenol content (75.49-144.99 GAE mg/g) than the hot water extracts (22.77-58.68 GAE mg/g). Furthermore, the ethanolic extracts contained flavonoids but not the hot water extract. Overall, these mycelia were highly effective in the antioxidant activities and might be potent antioxidants.

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