Study on Extraction Technology of the Flavonoids Ultrasonic by Wave and Aqueous Two-phase System in the Durio Zibethinus Peel
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Abstract:
The flavonoids were extracted in the ethanol-(NH4)2SO4 aqueous two-phase system by ultrasonic cooperation. The ethanol concentration, the amount of the (NH4)2SO4, the solid-liquid ratio, the ultrasonic power, the ultrasonic time and the extraction temperature were discussed by the single factor experiment. The optimum extraction conditions were optimized by the L9 (34) orthogonal test. The optimum extraction conditions of the flavonoids were as follows: the ethanol concentration 60%, the solid-liquid ratio 1:25, the ultrasonic power 280 W, the ultrasonic time 50, and the extraction temperature 70 ℃.The yield of the flavonoid was reached 3.26% at the optimum conditions.
