【摘要】 对超声辅助提取薤白多糖的提取工艺进行了研究。在单因素试验基础上,以多糖提取率为响应值,根据Box-Behnken试验设计原理,通过响应面分析得到优化组合条件。试验结果表明,薤白多糖超声辅助提取的最佳工艺参数为:提取温度51℃,超声提取时间12 min,液固比30︰1(mL/g),提取功率100 W。在该工艺条件下多糖提取率预测值为14.24%,验证值为13.97%,相对误差为1.90%。该方法具有耗时短,效率高等优点,可为薤白多糖的深入研究提供参考依据。更多还原

【Abstract】 The extraction technology of polysaccharide from Allium macrostemon Bunge by ultrasonic-assisted method was optimized. On the basis of single factor experiments, the yield of polysaccharide as response value, the optimized extraction conditions was obtained by designing a Box-Behnken central composite experiment and the method of response surface analysis.The optimal extraction conditions were as following: extractions temperature of 51 ℃, extraction time of 12 min, the ratio of material to liquid 30︰1(mL/g) and ultrasonic power of 100 W. Under optimal conditions, the predicted and experimental extraction yields of polysaccharides were 14.24% and 13.97%, respectively. And the relative error was 1.90%. The method is beneficial to shorten extraction time and improve extraction efficiency and consequently, providing reference for development in Allium macrostemon Bunge.更多还原