费约果叶片槲皮素的提取工艺研究
2014-04-29马泽刚等
马泽刚等
摘要[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2 h,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。
关键词费约果叶片;槲皮素;提取工艺
中图分类号S667.9文献标识码A文章编号0517-6611(2014)36-12881-02
Abstract[Objective] To determine the optimal extraction technology of quercetin from the leaves of Feijoa sellowiana Berg. [Method] Taking extraction rate, purity and yield of quercetin as the indices, effects of extraction solvent, extraction temperature, extraction time, solid to liquid 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 l∶ 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, economical, convenient and this study provided a scientific basis for optimizing the extraction technology of quercetin.
Key wordsLeaves of Feijoa sellowiana Berg; Quercetin; Extraction technique
費约果(Feijoa sellowiana Berg)又名凤梨番石榴、巴西番石榴、无花果番石榴,系桃金娘科费约果属常绿灌木或小乔木。费约果叶片主要化学成分包括维生素E、黄酮、豆甾醇、β-胡萝卜素、对羟基苯乙醇和多酚类成分[1],具有抗菌、抗氧化、抗肿瘤、增强免疫和抗炎等药理作用[2]。费约果叶片中含有丰富的黄酮物质,研究表明,黄酮类化合物能防治心脑血管系统和呼吸系统疾病,具有抗炎抑菌、降低血糖以及增强免疫功能等药理作用[3-4]。槲皮素是黄酮类化合物中最具代表性的生理活性物质之一,其在天然产物中以单体和苷的形式大量存在。近年来研究表明槲皮素具有多种生物活性,如抗肿瘤、抗炎、抗病毒、抗自由基以及保护血管等[5-6]。目前对费约果叶片槲皮素提取工艺研究的文献尚未见报道。笔者采用HPLC分析法,以提取率、槲皮素收率、槲皮素纯度为指标,采用单因素试验比较了不同提取因素对费约果叶片槲皮素提取的影响,以期为费约果叶片的开发利用提供了理论参考和试验指导。……
