【摘要】 以乙醇作为提取剂,采用振荡提取法从狗枣猕猴桃叶中提取黄酮类化合物,研究了乙醇浓度、样品粒度、料液比、浸提温度、浸提时间及浸提次数对提取效果的影响。结果表明,料液比对黄酮提取效果影响最大,其次为提取时间和提取温度,而样品粒度和乙醇浓度影响较小。狗枣猕猴桃叶黄酮的最佳提取工艺条件为:乙醇浓度75%,粒度80目,料液比1∶15,浸提温度80℃,浸提时间2h,浸提次数3次,在此条件下黄酮提取率可达7.250%。更多还原

【Abstract】 Ethanol as extracting solvent,flavonoids was extracted from Actinidia kolomikta leaves using oscillating method.The influences of ethanol concentration,particle size,ratio of material to liquid,extracting temperature,extracting time and extracting times on extracting effect were studied.The results showed that ratio of material to liquid was the main influencing factor,then was extraction time and extraction temperature,particle size and ethanol concentration was the weakest ones.The optimum extracting conditions were ethanol concentration 75%,particle size 80,ratio of material to liquid 1∶15,extracting temperature 80℃,extracting time 2h,extracting 3 times.In these conditions,the extraction yield of flavonoids was 7.250%.更多还原