响应面法优化鬼针草茎中总黄酮的提取工艺
2017-10-12李媛媛姜艳玲周洪雷张玲蔡梅超孙筱林楚新红
李媛媛,姜艳玲,周洪雷*,张玲,蔡梅超,孙筱林,楚新红
(1.山东中医药大学药学院,山东 济南 250355;2.济南三株医药生物研究所,山东 济南 250100)
响应面法优化鬼针草茎中总黄酮的提取工艺
李媛媛1,姜艳玲1,周洪雷1*,张玲1,蔡梅超1,孙筱林2,楚新红2
(1.山东中医药大学药学院,山东 济南 250355;2.济南三株医药生物研究所,山东 济南 250100)
本文以黄酮的提取率为指标,考察乙醇浓度、用量、提取次数、提取时间对提取结果的影响,通过Box-Behnken设计建立响应面模型来优选鬼针草茎中总黄酮的提取工艺参数。结果表明,鬼针草茎中总黄酮最佳提取工艺为乙醇体积分数70%,液料比12∶1(mL/g),提取次数3次,提取时间1.5 h。在此条件下,总黄酮的提取率可达到0.95%,与理论值0.98%的相对误差为3.06%。
鬼针草;总黄酮;提取;响应面法
Abstract∶In this paper, the flavonoids extraction rate was taken as the index, the effects of ethanol concentration, dosage, extraction times and extraction time on the extraction results were investigated, and through Box-Behnken design, the response surface model was established to optimize the parameters of the technology for extracting total flavonoids from Bidens bipinnata L. stems. The results showed that the optimum extraction conditions of total flavonoids fromBidensbipinnataL. stems. were as follows: the ethanol volume fraction was 70%, liquid-solid ratio was12∶1(mL/g), extracted 3 times, and the extraction time was 1.5 h. In these conditions, the maximum extraction rate of total flavonoids could reach 0.95%, and the relative error was 3.06% when compared with the theoretical value of 0.98%.
Key words∶BidensbipinnataL.; total flavonoids; extraction; the response surface methodology
鬼针草(BidensbipinnataL.)为菊科一年生草本植物,民间药用历史悠久,治疗作用广泛,药材资源丰富[1]。鬼针草黄酮类物质一直是研究的热点,大量文献表明[2-6],黄酮具有抗肿瘤、抗心血管疾病、抗氧化、抗衰老、抗菌抗病毒、免疫调节以及抗炎镇痛等作用。目前对鬼针草的研究大多数是以全草为研究对象,对鬼针草不同药用部位的研究相对较少,研究鬼针草不同药用部位总黄酮的含量,对鬼针草总黄酮的提纯应用具有重要意义,本实验单独考察鬼针草茎中总黄酮的提取工艺。已有报道的鬼针草总黄酮的提取方法主要有超声提取法和回流提取法[7-8],超声提取由于噪声污染等问题应用受到限制,回流提取是目前工业化生产应用较为广泛的一种提取方法,对鬼针草总黄酮的乙醇回流提取工艺进行研究具有重要的现实意义。……
