费约果叶片槲皮素的提取工艺研究

目的]研究费约果叶片槲皮素提取工艺,优选最佳提取条件.方法]以提取率、槲皮素收率和槲皮素纯度为指标,采用单因素试验法,考察提取溶剂、提取温度、提取时间、料液比和提取次数对费约果叶片槲皮素收率的影响,优选出最佳提取工艺条件.结果]最佳槲皮素提取工艺是在50℃条件下,将费约果叶片粉末置于10倍90％乙醇中回流提取4次,每次2h,提取率、槲皮素收率、槲皮素纯度分别为3.486％、0.0334％、0.958％.结论]此法高效、成本低、操作方便、工艺简单,为费约果叶片槲皮素提取工艺的进一步研究提供了依据.

Extraction Technology of Quercetin from Leaves of Feijoa sellowiana Berg

Objective ] To determine the optimal extraction technology of quercetin from the leaves of Feijoa seUowiana Berg. L Method J Tak-ing extraction rate, purity and yield of quercetin as the indices, effects of extraction solvent, extraction temperature, extraction time, solid toliquid ratio and extraction times on the extraction rate of quercetin were studied. And the optimal extraction technology was selected. Result]The optimal extraction technology was as follow leaves of Feijoa sellowiana Berg powder was added into 90% alcohol with the ratio of 1：10（g/ml） under 50 ℃, the leaves was by reflux extraction for 4 times with each time for 2 h. The extraction rate, extraction rate of quercetin,and purity of quercetin were 3. 486% ,0. 033 4% and 0.958%, respectively. Conclusion] The extraction technology was efficient, economi-cal, convenient and this study provided a scientific basis for optimizing the extraction technology of quercetin.