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[Study on ultrasonic extraction techniques of flavonoids in Chrysanthemum morifolium]
Hong Yin1, Yong-zhou Hu, Xin-ji Yang
1College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310031, China.
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.
