Medicinal Plant

2012, v.3(05) 30-32+44

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Ultrasonic-assisted Extraction of Flavonoids from HERBA TARAXACI
Ultrasonic-assisted Extraction of Flavonoids from HERBA TARAXACI

摘要(Abstract):

[Objective] To select the ultrasonic-assisted extraction conditions of flavonoids from HERBA TARAXACI.[Method] With the extraction rate of total flavonoids as the investigation index,the single factor test and orthogonal experiment were adopted to study the effects of ethanol concentration,solid-liquid ratio,extraction time and other factors on the ultrasonic extraction of flavonoids from HERBA TARAXACI,and the best extraction conditions were selected.[Result] Under the best conditions of 120 W ultrasonic power,60% ethanol as solvent,1:30 (g/ml) solid-liquid ratio,30 min extraction time and 70 ℃ ultrasonic temperature,the extraction rate of total flavonoids could reach 4.02%.[Conclusion] The method selects the optimal extraction conditions,which provides theoretical basis for the industrialized production of flavonoids from HERBA TARAXACI.

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