以β-环糊精及其衍生物为提取介质,微波辅助提取黄芪黄酮并测定了提取液对亚硝酸根的清除能力。采用单因素确定β-环糊精介质中微波法提取黄芪黄酮提取液的条件,在模拟人体胃液条件下,采用分光光度法测定了黄芪提取液对亚硝酸根的清除能力。优化提取条件为:羟丙基-β-环糊精介质中,以体积分数40%乙醇为溶剂,在260W功率下提取2min。加入羟丙基β-环糊精能使黄芪提取液对亚硝酸盐的清除能力从43.9%提高到60.6%。

Microwave method was used to extract Radix astragali extracts form p-cyclodextrin derivative.The capability of removing effect on nitrite with Radix astragali was determined.The optimum experiment conditions were studied.The capability of removing nitrite with Radix astragali flavone was determined by spectrophotometry under simulated human gastric juice.The optimum conditions was as follows:volume of 40%ethanol,microwave 260w,microwave extraction time 2 min.The capability of removing Radix astragali on nitrite was improved by HP-β-CD derivative and the clearance effect was increased from 43.9%to 60.6%.