香榧假种皮中总多酚的超声提取工艺研究

Study on ultrasonic extraction of total polyphenols from aril of Torreya grandis cv. merrilli

对香榧假种皮中总酚提取工艺条件进行了研究,采用正交实验L9(34)考察了乙醇浓度、提取时间、料液比、提取功率等因素对香榧假种皮多酚类物质提取效果的影响。确定了超声法提取香榧假种皮多酚类化合物的最佳工艺条件为:乙醇浓度30%、提取时间40min、料液比1∶25、超声功率200W,在此条件下提取两次,总酚得率为14.65mg/g。与传统的热回流法相比,超声提取法具有提取效率高、所需时间短、操作方便等优点,亦可用于其他类似样品的提取分析。

Ultrasonic extraction of polyphenols from aril of Torreya grandis cv. merrilli was optimized by L9 （3^4） orthogonal experiment.The effects of extracting solvent concentration, extracting time, ultrasonic power and the ratio of material to liquor on the extraction yield were investigated. The optimum ultrasonic extraction conditions were as follow：the concentration of ethanol was 30% ,the extracting time was 40min,the ratio of solid to liquid was 1：25 and the ultrasonic power was 200W.Compared with the reflux, it showed many advantages such as higher extraction yield,shorter time, more convenient to operate.This method also could be used to distill and analyze other kinsmanship materials.