[Study on ultrasonic extraction techniques of flavonoids in Chrysanthemum morifolium].

Zhongguo Zhong Yao Za Zhi

College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310031, China.

Published: May 2004

Objective: To optimize the ultrasonic extraction condition for flavonoids from Chrysanthemum morifolium.

Method: The extraction rate of flavonoids optimized condition (ethanol concentration, ultrasonic time, solvent quantity and extraction times) was determined by orthogonal design. UV-Spectrophotometry was used for the determination.

Result: The order of factors to affect the flavonoid extraction was ethanol concentration > extraction times > solvent quantity > ultrasonic time.

Conclusion: The optimum ultrasonic extractions were: A2 B2 C3 D3. Compared with traditional extraction, ultraction method can save time, be easy to operate, improve extraction rates and need no heating.

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