Medicinal Plant

2010, v.1(11) 87-89

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Optimization of Ultrasonic Extraction Process of Tannins from Rhodiola crenulata(Hook.f.et Thoms.)H. Ohba
Optimization of Ultrasonic Extraction Process of Tannins from Rhodiola crenulata(Hook.f.et Thoms.)H. Ohba

摘要(Abstract):

[Objective] To optimize the ultrasonic extraction process of tannins from Rhodiola crenulata(Hook.f.et Thoms.)H.Ohba.[Method] Based on single factor experiment,the extraction conditions were optimized by orthogonal test,and the content of tannins was determined by casein method.[Result] The optimal extraction conditions were as follows:70% acetone as extraction solvent,solid-liquid ratio of 1:10,ultrasonic power of 450 W and extraction duration of 15 min.Under the above conditions,the content of tannins from Rhodiola crenulata(Hook.f.et Thoms.)H.Ohba reached as high as 5.17 mg/ml.[Conclusion] The study provides theoretical evidence for the extraction of tannins from Rhodiola crenulata(Hook.f.et Thoms.)H.Ohba.

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