Journal of Ginseng Research

The Korean Society of Ginseng (고려인삼학회)
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Salting-out extraction of ginsenosides from the enzymatic hydrolysates of Panax quinquefolium based on ethanol/sodium carbonate system

  • Wei, Yingqin (School of Chemical and Pharmaciutical Engineering, Qilu University of Technology (Shandong Academy of Sciences)) ;
  • Hou, Baojuan (School of Chemical and Pharmaciutical Engineering, Qilu University of Technology (Shandong Academy of Sciences)) ;
  • Fang, Haiyan (School of Chemical and Pharmaciutical Engineering, Qilu University of Technology (Shandong Academy of Sciences)) ;
  • Sun, Xinjie (School of Chemical and Pharmaciutical Engineering, Qilu University of Technology (Shandong Academy of Sciences)) ;
  • Ma, Feng (School of Chemical and Pharmaciutical Engineering, Qilu University of Technology (Shandong Academy of Sciences))
  • Received : 2017.05.03
  • Accepted : 2018.08.03
  • Published : 2020.01.15
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Abstract

Background: Salting-out extraction (SOE) had been developed as a special branch of aqueous two-phase system recently. So far as we know, few reports involved in extracting ginsenosides with SOE because of the lower recovery caused by the unique solubility and surface activity of ginsenosides. A new SOE method for rapid pretreatment of ginsenosides from the enzymatic hydrolysates of Panax quinquefolium was established in this article. Methods: The SOE system comprising ethanol and sodium carbonate was selected to extract ginsenosides from the enzymatic hydrolysates of Panax quinquefolium, and HPLC was applied to analyze the ginsenosides. Results: The optimized extraction conditions were as follows: the aqueous two-phase extraction system comprising ethanol, sodium carbonate, ethanol concentration of 41.51%, and the mass percent of sodium carbonate of 7.9% in the extraction system under the experimental condition. Extraction time had minor influence on extraction efficiency of ginsenosides. The results also showed that the extraction efficiencies of three ginsenosides were all more than 90.0% only in a single step. Conclusion: The proposed method had been successfully applied to determine ginsenosides in enzymatic hydrolysate and demonstrated as a powerful technique for separating and purifying ginsenosides in complex samples.

Keywords

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