绵阳荔枝草中总黄酮的提取及含量测定
2015-10-21刘晓燕



摘要 [目的]提取及测定绵阳荔枝草中总黄酮的含量。[方法]用超声波乙醇浸提法从荔枝草中提取黄酮类物质,通过正交设计试验,得出乙醇浸提法提取荔枝草中黄酮类化合物最佳试验条件,并对提取的黄酮类物质进行光谱扫描、显色反应等定性鉴定,用紫外分光光度法测定其含量。[结果]提取荔枝草中总黄酮的最佳工艺条件:60%乙醇为溶剂系统,料液比为1:30,在超声波温度为35 ℃下提取35 min,测得荔枝草中总黄酮的含量为1.20%,平均回收率为97.43%~100.17%。[结论]此方法采用全物理过程,无任何污染,是一条理想的提取黄酮类物质的途径,为荔枝草的广泛开发和利用提供一定理论依据。
关键词 荔枝草;正交试验法;总黄酮;提取工艺;含量测定
中图分类号 S567 文献标识码
A 文章编号 0517-6611(2015)05-073-05
Extraction and Determination of the Content of Total Flavonoids in Salvia plebeia R.Br in Mianyang
LIU Xiaoyan (School of Chemistry and Chemical Engineering,Mianyang Normal University,Mianyang,Sichuan 621000)
Abstract [Objective] The research aimed to extract and determine the content of total flavonoids in Salvia plebeia R.Br.[Method] The flavonoids extracted from Salvia plebeia R.Br by the method of ultrasonic ethanol extraction and the orthogonal experiment,the optimal experimental conditions of the ethanol extraction extracted flavonoids from Salvia plebeia R.Br were obtained.And the content of the extracted compounds had been characterized by ultraviolet spectrophotometry.[Result] The optimum conditions of extracting total flavonoids from Salvia plebeia R.Br were as follows: the solvent was 60% ethanol; the ratio of material to liquid 1∶30; ultrasonic temperature 35 ℃; the optimum time was 35 min. The results shows the content determination of total flavonoids in Salvia plebeia R.Br was 1.20% and the average recovery rate was 97.43%-100.17%.[Conclusion] This method without any pollution, low cost, simple operation, provides a theoretical basis for the development and utilization of Salvia plebeia R.Br widely.
Key words Salvia plebeia R.Br;Orthogonal experiment;Total flavonoids;Extraction process; Content determination
作者简介 刘晓燕(1965- ),女,四川德阳人,副教授,从事无机化学和环境化学研究。
收稿日期 20141229
荔枝草(Salvia plebeia R.Br)为唇形科雪见草的全草[1],别名癞疙宝草,其性味苦、辛、凉,以全草入药,为常用中药,分布于印度、朝鲜、阿富汗、越南、日本、马来西亚、缅甸、泰国以及中国大陆的青海、新疆、西藏、甘肃等地,多生在路旁、山坡、沟边或田野潮湿的土壤上,目前已由人工引种栽培[2-3]。荔枝草具有抗氧化功能[4-5],镇咳、祛痰、平喘作用[6],抗病毒作用,治疗肺癌作用;荔枝草性味微苦、凉,具有解毒消肿[7-8]、利湿止痒、清热凉血等作用[9-10]。目前荔枝草的相关研究已有很多报道,包括化学成分、提取工艺[11-12]、药理活性等的研究,但对绵阳荔枝草中总黄酮的提取及含量的测定尚未见报道。……
