超声波辅助提取芦根多糖的影响因素分析

目的]优化超声波辅助提取芦根多糖的工艺条件。方法]在单因素试验的基础上,通过响应面分析考察超声功率、提取时间和料液比对芦根多糖提取率的影响,并对其工艺参数进行优化。结果]芦根多糖提取的最佳条件为料液比1∶22.5（g/ml）,超声功率250W,提取时间26 min,提取2次;在此最优工艺条件下,芦根多糖提取率达1.724%。结论]与传统的热水提取法相比,超声波法的提取时间缩短了5/6,多糖提取率增加1.412倍;超声波辅助提取芦根多糖具有快速、高效等优点,可用于芦根多糖的提取。

Factors Analysis of Ultrasonic-assisted Extraction of Polysaccharides from RHIZOMA PHRAGMITIS

Objective] To optimize the ultrasonic technology extraction of polysaccharides from RHIZOMA PHRAGMITIS.Method] The effects of some independent variables,including ultrasonic power,treating time and material-water ratio on the extraction yield of polysaccharides were investigated through the response surface methodology based on the analysis of single-factor tests.Result] It was found that optimal parameters for extracting polysaccharides from RHIZOMA PHRAGMITIS were based on twice extraction for 26 min at ultrasonic power 250 W with a material-water ratio of 1∶22.5 g/ml,which yielded an extraction yield of 1.724%.Compared with the traditional hot water extraction method,the ultrasonic extraction time was shortened by five-sixths,and the yield of polysaccharides was multiplied by 1.412 times.Conclusion] Ultrasonic technology is rapid and efficient to extract polysaccharides from RHIZOMA PHRAGMITIS.