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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.433 SNIP: 0.661 CiteScore™: 1.38

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

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018025953
pages 381-392

Extraction of Ergothioneine from Pleurotus eryngii and P. citrinopileatus (Agaricomycetes) and Preparation of Its Product

Ming-Tsung Yen
Department of Applied Life Science and Health, Chia Nan University of Pharmacy and Science, Jenteh, Tainan, Taiwan, Republic of China
Yuan-Hua Chang
Department of Food Science and Biotechnology, National Chung Hsing University (NCHU), Taichung, Taiwan, R.O.C.
Shih-Jeng Huang
Department of Health Food, Chung Chou University of Science and Technology, Yuanlin, Changhua 51003, Taiwan, Republic of China
Ming-Ching Cheng
Department of Health Food, Chung Chou University of Science and Technology, Yuanlin, Changhua, Taiwan, Republic of China; Center for Health Food Development and Inspection, Chung Chou University of Science and Technology, Yuanlin, Changhua, Taiwan, Republic of China
Jeng-Leun Mau
Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan, Republic of China

ABSTRACT

Ergothioneine is an effective antioxidant and is abundant in species of genus Pleurotus. This research focused on developing an ergothioneine extract from P. eryngii and P. citrinopileatus under optimal extraction conditions. The hot-water and 70% ethanol extractions yielded more ergothioneine than microwave, ultrasonic, and autoclaving extractions. Hot-water extraction with optimal conditions—125 rpm at 75°C for 5 minutes—produced P. eryngii and P. citrinopileatus extracts with 0.86 and 3.73 mg ergothioneine/g dry weight, respectively. In addition to 50% of added maltodextrin, spray-dried products from mushrooms contained 23.07-16.58% carbohydrates and 18.32-21.40% protein. The microstructure of spray-dried products showed shrunken spheres with mean particle diameters of 15.82-19.94 μm. After in vitro simulated gastric and intestinal digestion, the spray-dried P. eryngii and P. citrinopileatus products contained 88% and 91% residual ergothioneine, respectively. Overall, the spray-dried products could be used as antioxidative supplements.


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