余萍 赵宝娥 李欠

    摘要 目的：比较不同提取工艺的黄芪多糖提取率。方法：选用超声波辅助提取法对黄芪多糖进行提取，比较正交实验最优提取工艺和响应面试验最优提取工艺的提取率。结果：经由响应面优化得出：最优提取时间22 min，最优提取温度50 ℃，最优料液比16∶1(mL/g)，理论提取率为9.93%;经过正交设计优化得出：最优提取时间20 min，最优提取温度40 ℃，最优料液比15∶1(mL/g)，理论提取率为9.56%。结论：经二种优化结果进行验证比较，研究结果表明响应面法优化结果更为准确、合理，更适宜推广。

    关键词 黄芪多糖;正交优化;响应面优化;工艺比较;提取温度;提取时间;液料比;提取率

    Comparison of Different Extraction Optimization Processes of Astragalus Polysaccharides

    YU Ping，ZHAO Bao′e，LI Qian

    (Gansu Provincial Key Laboratory of Arid Land Crop Science，Gansu Provincial Key Laboratory of Technical Innovation for Standardized Production of Chinese Medicinal Materials，Materials College of Agriculture，Gansu Agricultural University，Lanzhou 730070，China)

    Abstract Objective：To compare the extraction rate of Astragalus polysaccharides under different extraction technologies.Methods：Astragalus polysaccharides were extracted by ultrasonic-assisted extraction method ......