【摘要】 用正交试验法对梨皮中的黄酮类化合物提取工艺进行了优选研究。采用正交表L1 6(4 5 ) ,以提取时间、提取温度、提取次数、提取剂中乙醇含量以及料液比为因素 ,以总黄酮显色液的吸光度为指标进行试验。得到了最佳提取参数 :温度为 70℃ ,时间 2h ,提取次数 3次 ,提取溶剂为 80 %的乙醇 ,料液比为 1∶7。更多还原

【Abstract】 The optimum technology of extracting flavones in the pear skin was studied by orthogonal test .An orthogonal test table L16(45) was used with the factors of extracting time, temperature, three times, ethanol concentration and the ratio of solid to liquid. The content of total flavones was determined by spectrophotometry. The optimum technology was: temperature 70℃, time 2 h, three times , 80% ETOH as extracting solvent , stock ratio 1∶7.更多还原