Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v17.i3.40
pages 241-253

Effect of UV-B Irradiation on Physiologically Active Substance Content and Antioxidant Properties of the Medicinal Caterpillar Fungus Cordyceps militaris (Ascomycetes)

Shih-Jeng Huang
Department of Health Food, Chung Chou University of Science and Technology, Yuanlin, Changhua 51003, Taiwan, Republic of China
Chun-Ping Lin
Department of Health and Nutrition Biotechnology, Asia University, Wufeng, Taichung, Taiwan, ROC; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, ROC
Jeng-Leun Mau
Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, Republic of China
Yu-Shan Li
Department of Health and Nutrition Biotechnology, Asia University, Wufeng, Taichung, Taiwan, ROC
Shu-Yao Tsai
Department of Food Nutrition and Health Biotechnology, Asia University, Wufeng, Taichung, Taiwan, Republic of China; Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, Republic of China

ABSTRACT

Ultraviolet-B (UV-B) light irradiation is a well-known technique for converting vitamin D2 from ergosterol in mushroom fruit bodies. Mushrooms are a natural and nonanimal food source of vitamin D2. We studied the effect of UV-B light irradiation on the amount of vitamin D2 and physiologically active substances in Cordyceps militaris and their antioxidant properties. After UV-B irradiation for 2 hours, the vitamin D2 content of freshly harvested C. militaris fruiting bodies, mycelia, whole submerged culture (WSC), and homogenized submerged culture (HSC) increased from 0 to 0.03 to 0.22 to 1.11 mg/g, but the ergosterol content was reduced from 1.36 to 2.50 to 1.24 to 2.06 mg/g, respectively. After UV-B irradiation, the amount of adenosine, cordycepin, and ergothioneine of fruiting bodies dramatically increased 32−128%, but the polysaccharide content slightly decreased 36%. The reverse trends were observed in mycelia, WSC, and HSC. UV-B irradiation could reduce the effective concentrations at 50% of fruiting bodies for ethanolic and hot water extracts in reducing power, scavenging, and chelating abilities, whereas mycelia, WSC, and HSC of ethanolic extracts increased effective concentrations at 50% in reducing power, scavenging, and chelating abilities. UV-B irradiation slightly increased flavonoid content (10−56%) and slightly affected total phenol content.


Articles with similar content:

Enhancement of Antioxidant Properties and Increase of Content of Vitamin D2 and Non-volatile Components in Fresh Button Mushroom, Agaricus bisporus (Higher Basidiomycetes) by γ-irradiation
International Journal of Medicinal Mushrooms, Vol.16, 2014, issue 2
Jeng-Leun Mau, Shu-Yao Tsai, Shih-Jeng Huang
Effect of Pulsed Light Irradiation on Bioactive, Nonvolatile Components and Antioxidant Properties of Caterpillar Medicinal Mushroom Cordyceps militaris (Ascomycetes)
International Journal of Medicinal Mushrooms, Vol.19, 2017, issue 6
Arif Rahmandita, Agnes Purwidyantri, Shu-Yao Tsai, Fu-Kuei Huang, Shih-Jeng Huang
Antioxidant Properties of Ethanolic Extracts from Culinary-Medicinal Button Mushroom Agaricus bisporus (J. Lange) Imbach (Agaricomycetideae) Harvested at Different Stages of Maturity
International Journal of Medicinal Mushrooms, Vol.10, 2008, issue 2
Jeng-Leun Mau, Tsai-Ping Wu, Shu-Yao Tsai, Shih-Jeng Huang
Preparation of Chaga Medicinal Mushroom, Inonotus obliquus−Fermented Rice Using Solid-State Fermentation and its Taste Quality and Antioxidant Property
International Journal of Medicinal Mushrooms, Vol.14, 2012, issue 6
Chan-Chun Yeh, Shin-Yi Lin, Jeng-Leun Mau, Chih-Hung Liang
Nonvolatile Taste Components and Antioxidant Properties of Fruiting Body and Mycelium with High Ergothioneine Content from the Culinary-Medicinal Golden Oyster Mushroom Pleurotus citrinopileatus (Agaricomycetes)
International Journal of Medicinal Mushrooms, Vol.18, 2016, issue 8
Sheng-Yang Wang, Shin-Yi Lin, Jeng-Leun Mau, Shih-Chang Chien