【摘要】 采用有机溶剂法提取桃叶中的柚皮素,研究有机溶剂浓度、时间、温度和料液比对柚皮素得率的影响。实验中先对桃叶粉进行一次提取以除去大量叶绿素,再对桃叶粉进行二次提取以提取柚皮素。通过实验确定了柚皮素的最佳二次提取条件为乙醇甲醇浓度比7∶3、温度为50℃、时间为5h、料液比为1∶45(g∶mL),采用分光光度法测得柚皮素平均得率为5.25%。更多还原

【Abstract】 The organic solvent extraction method was used to extract naringenin from peach leaves, and the influence of concentration of organic solvent, time, temperature and stuff and liquor ratio on Naringenin-yield was investigated. The first extraction was used to remove most of the chlorophyll and naringenin was obtained in the second extraction. The results show that the best second extraction condition for naringenin was as follows: 7∶3 for concentration ratio of methanol and ethanol, 50 ℃ for temperature, 5 h for time, and 1∶45 for stuff and liquor ratio. Naringenin-average yield was measured to 5.25 percent by spectrophotometry.更多还原