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Study on the Extraction of Total Flavonoids from Ainsliaea fragrans Champ.by Ultrasonic Radiation

WU Xiao-chun et al (Bio-engineering Institute of Yichun University,Yichun,Jiangxi 336000)  
Ultrasonic extraction technics in extracting total flavonoids from Ainsliaea fragrans Champ.was discussed,and the relevant optimum conditions were determined with orthogonal experiments.The optimum technique was:40% ETH as extracting solvent;temperature was 75 ℃;time was 1 h and stock ratio was 1∶20.The yield was 4.95%.
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