Medicinal Plant

2012, v.3(08) 72-75

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Ultrasonic Assisted Extraction of Procyanidins from Rhodiola rosea
Ultrasonic Assisted Extraction of Procyanidins from Rhodiola rosea

摘要(Abstract):

[Objective]To study the extraction conditions for procyanidins assited by ultrasonic wave from Rhodiola rosea.[Method]Effects of solid-liquid ratio,ethanol concentration,extraction time and extraction temperature on the extraction rate of procyanidins were studied by single factor test.Based on the single factor test,the optimal extraction condition for procyanidins from R.rosea was obtained by L 9 (34)orthogonal test.[Result]The influence degree of factors on the extraction rate of procyanidins was in the order of ethanol concentration(B)>solid-liquid ratio(A)> extraction temperature(C)>extraction time(D).The optimal extraction condition was as follows:1∶40(g/ml)solid-liquid ratio,60%ethanol concentration,50℃extraction temperature and 30 min extraction time.Under this condition,the extraction rate of procyanidins from R.rosea was 11.26%.[Conclusion]The optimal condition was obtained for the ultrasonic assisted extraction of procyanidins from R.rosea,which provided references for the development and utilization of R.rosea.

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基金项目(Foundation): Supported by the Technology Fund of Beijing Education Committee(KM200911417007)

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