Rape Seed proanthrocyanidin was extracted by ultrasonic technology,and the conditions of extraction were studied.Resluts showed that the order of the factors that influencing the extraction effects was as following:ethanol concentraction,extracting temperature,ultrasonic extracting time and the ratio of the quantity of raw material to extracting agent(w/v).The optimal conditions were as follows:temperature:60℃,extracting agent:60% ethanol aqueous,the ratio of the quantity of raw material to extracting agent...
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