【摘要】 研究了食用仙人掌中黄酮类物质的提取方法,分别采用超声波萃取法、回流提取法和索氏提取法对食用仙人掌中黄酮类物质进行提取,用UV-2102C型紫外可见分光光度计分析比较三种提取方法的得率,以筛选出仙人掌黄酮类物质提取的最佳工艺。结果显示:温度为95℃,时间2h,料液比为1∶20,70%乙醇作溶剂的条件下,得出回流提取法的提取率最高。食用仙人掌中黄酮类物质的含量为:3.2775mg/g。更多还原

【Abstract】 The extraction method of flavonoids substances from edible cactus was studied by the methods of ultrasonic extraction,extraction with reflux and soxhlet extraction.The content of flavonoids was determined by UV-2102C spectrophotometer.The best method was extraction with reflux,and the best conditions were:70% ethanol solvent in 90℃,the rate of material liquid was 1∶20,extraction time was 2h,and the flavonoids substances in edible cactus was 3.2775mg/g.更多还原