响应面微波辅助提取金花茶花多糖工艺研究

2016-06-25 06:30:08刘茜许子竞胡旭飞
湖南师范大学学报·自然科学版 2016年3期

刘茜+许子竞+胡旭飞

摘 要 为优化金花茶花中水溶性多糖微波提取工艺,在单因素试验的基础上,利用响应面分析法建立了金花茶花多糖(CCFP)微波提取的二次响应曲面方程.试验的三因素(温度、时间和液料比)对CCFP提取有不同的影响.结果表明,在试验范围内,通过方差分析得出,微波提取温度对CCFP影响最大,其次为提取时间,液料比对CCFP提取率影响最小.试验因素的最佳条件为:提取温度77 ℃,时间10 min,液料比为26 mL∶1 g.在此条件下,CCFP提取率可达3.40%,与模型预测值3.56%很接近.

关键词 金花茶花;微波辅助浸提;多糖;响应面分析

中图分类号 O629 文献标识码 A 文章编号 1000-2537(2016)03-0040-06

Abstract In order to optimize the conditions of microwave-assisted extraction method of polysaccharides from Camellia Chrysantha (Hu) Tuyama flowers( CCFP), an equation for the microwave extraction was obtained on the basis of single-factor experiments. Our results show that the extraction temperature, extraction time and solvent to material ratio have different effects on the yield of CCFP. Our study indicates that the order of importance of these factors affecting on the extraction yield is as follows: microwave treatment temperature, microwave treatment time and solvent to material ratio. The optimal condition of the microwave extraction of CCFP is at 77 ℃ for 10 min with 1∶26(g/mL) as the solvent to material ratio. The extraction rate of CCFP can be up to 3.40%, agreeing well with the predicted value of 3.56%.

Key words Camellia chrysantha (Hu) Tuyama flowers; microwave-assisted extraction technology; polysaccharides; response surface analysis

山茶科山茶属的金花茶(Camellia chrysantha (Hu) Tuyama)为常绿灌木至小乔木,是我国珍稀濒危植物,其叶为深绿色,皮灰黄色,花蜡质金黄,金瓣玉蕊,耀眼夺目,晶莹而油润,呈杯状、壶状或碗状,有“植物界大熊猫”、“茶族皇后”之美称,国外则称之为“幻想中的黄色山茶花”,仅分布于我国广西的西南部[1-2].金花茶的药用在《本草纲目》中有记载,在广西壮族民间是一种传统中草药, 临床实验研究表明,金花茶花水提物可降血压、降血脂、降低胆固醇,可在某种程度上抑制转移性恶性肿瘤的生长,防止动脉粥样硬化等[3-4].药理研究也指出,表现金花茶生理活性的重要组成部分是其所含的多糖[5-7],对于金花茶花多糖(Camellia chrysantha(Hu) Tuyama flowers polysaccharide(CCFP))的提取工艺研究,目前国内外未见报道.

微波辅助提取具有快速、简单、安全、低耗等优点,被广泛用于植物有效成分的提取.本实验采用微波辅助提取……

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