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http://dx.doi.org/10.9721/KJFST.2015.47.2.233

Optimization of the Extraction of Bioactive Compounds from Chaga Mushroom (Inonotus obliquus) by the Response Surface Methodology  

Kim, Jaecheol (Department of Food and Nutrition, and Research Institute of Human Ecology, Seoul National University)
Yi, Haechang (Department of Food and Nutrition, and Research Institute of Human Ecology, Seoul National University)
Lee, Kiuk (Department of Food and Nutrition, and Research Institute of Human Ecology, Seoul National University)
Hwang, Keum Taek (Department of Food and Nutrition, and Research Institute of Human Ecology, Seoul National University)
Yoo, Gichun (DHF Co., Ltd.)
Publication Information
Korean Journal of Food Science and Technology / v.47, no.2, 2015 , pp. 233-239 More about this Journal
Abstract
This study determined the optimum extraction conditions based on five response variables (yield, total phenolics, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radical scavanging activity, oxygen radical absorbance capacity (ORAC), and ${\beta}$-1,3-glucan content) in chaga mushroom (Inonotus obliquus) using the response surface methodology, where three independent variables (ethanol concentration, extraction temperature, and extraction time) were optimized using a central composite design. The optimum ethanol concentration, extraction temperature, and extraction time were 50% (w/w), $88.7^{\circ}C$, and 14.5 h; 9.2%, $92.7^{\circ}C$, and 14.5 h; 50.8%, $92.7^{\circ}C$, and 14.5 h; 9.2%, $92.7^{\circ}C$, and 1.5 h; and 90.8%, $92.7^{\circ}C$, and 1.5 h for yield, total phenolics, ABTS, ORAC, and ${\beta}$-1,3-glucan content, respectively. The predicted values of the response variables were compared with those of the extracts under the optimal extraction conditions to verify the models. The optimum extraction condition for the five response variables was predicted to be 81.4% ethanol at $92.7^{\circ}C$ for 14.5 h.
Keywords
antioxidant activity; chaga mushroom; extraction condition; ${\beta}$-1,3-glucan; response surface methodology;
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Times Cited By KSCI : 2  (Citation Analysis)
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