响应曲面优化-微波辅助法对葛根中葛根素的提取及测定
Contemporary Chemical Industry(2018)
Abstract
建立葛根素的高效液相色谱检测方法.使用70%乙醇溶液微波辅助提取,C18色谱柱分离,二极管阵列检测.利用Box-Behnken响应面分析优选微波提取时间、温度和溶剂组成,得到最佳提取工艺为:微波提取时间9.7 min、提取温度60.7 ℃、乙醇-水比例为71.2%,在此条件下,实验优化后葛根素平均提取率达2.09 %.葛根素在1.0~200 mg/L范围内呈现良好的线性关系,相关线性系数r为0.9997,检出限为0.3 mg/L,加标回收率为97.3%~99.2%,相对平均偏差RSD为3.72%~6.21%.
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