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KMID : 1134820160450081162
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Journal of the Korean Society of Food Science and Nutrition
2016 Volume.45 No. 8 p.1162 ~ p.1169
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Optimization of Extraction of Marker Compounds from Red Ginsengs by Accelerated Solvent Extraction Using Response Surface Methodology
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Kim Eun-Ok
Xu Jiu-Liang
Um Byung-Hun
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Abstract
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A new method based on accelerated solvent extraction (ASE) combined with response surface methodology (RSM) has been developed for optimization of the extraction of ginsenoside [Rb1, Rg1, and Rg3(20S)], total phenolics, and benzopyrene in red ginseng. The RSM method, based on a five level and two variable central composite design, was employed to obtain the optimal combination of extraction conditions. In brief, ginsenosides Rb1, Rg1, and Rg3(20S) and total phenolics with undetectable benzopyrene were optimally extracted with 50% ethanol as an extraction solvent, extraction temperature of 158°C, extraction time of 20 min, extraction pressure of 2,500 psi, flush volume of 60%, and one extraction cycle. The contents of ginsenosides and total phenolics in red ginseng extracted by ASE under optimum conditions were significantly higher than those extracted by sonication and reflux extraction.
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KEYWORD
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accelerated solvent extraction, response surface methodology, red ginseng, marker compounds, optimization
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