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- W2144840582 abstract "Purpose: To develop a more green, efficient and low cost process for the extraction of steroidal saponins from Dioscorea Zingiberensis C. H. Wright.Methods: Six kinds of ionic liquids with different cations and anions were evaluated. In addition, the extraction parameters of the ionic liquid based ultrasonic/microwave extraction were studied. In order to quantify the total saponin content accurately, all steroidal saponins were converted into diosgenin and quantified with an appropriate HPLC procedure. IL-UMAE under optimal conditions was compared with heat reflux extraction (HRE) and ultrasonic assisted extraction (UAE).Results: 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIm]BF4) solution at concentration of 0.5 mol L-1 was selected as extraction solvent. The optimum conditions were as follows: solvent to solid ratio 15:1, microwave power 500 W and extraction time 8 min. Under these optimal conditions, the highest extraction yield of diosgenin 10.24 ± 0.31 mg g-1 was obtained. It took only 8 min to obtain the 91.67 % content of diosgenin obtained by traditional HRE. Extracting on time was shortened from 120 min to 8 min.Conclusion: Compared with traditional methods, IL-UMAE method uses Ionic liquid-solvent which greatly shortens the extraction time. IL-UMAE as a simple, effective and environmentally friendly approach shows a broad prospect for active ingredient extraction.Keywords: Dioscorea zingiberensis Steroidal saponins, Ionic liquid, Ultrasonic, Microwave" @default.
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- W2144840582 date "2014-09-10" @default.
- W2144840582 modified "2023-10-17" @default.
- W2144840582 title "Ionic Liquid-Based Ultrasonic/Microwave-Assisted Extraction of Steroidal Saponins from <i>Dioscorea zingiberensis</i> C. H. Wright" @default.
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- W2144840582 doi "https://doi.org/10.4314/tjpr.v13i8.20" @default.
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