[Objective] This study aimed to optimize the conditions for purification of total flavones from litchi pericarp by macroporous absorption resin.[Method] The flavones adsorption rates and desorption rates of macroporou...[Objective] This study aimed to optimize the conditions for purification of total flavones from litchi pericarp by macroporous absorption resin.[Method] The flavones adsorption rates and desorption rates of macroporous absorption resins(AB-8,HPD-600,D101) were compared,and the technological parameters of D101 during the purification process were investigated.[Result] D101 macroporous absorption resin was appropriate for the purification of total flavonoids from litchi pericarp.The optimal technological conditions were selected:the pH of sample solution was 5.0;concentration of sample solution was 4 mg/ml,with a volume of 2.5BV;80% ethanol was used as elution solution,with a volume of 2.0BV.[Conclusion] The content of total flavones achieved 83% after separation by D101 macoporous absorption resin.展开更多
采用大孔树脂吸附分离的方法对粉单竹竹叶黄酮提取物进行纯化,探讨D101大孔吸附树脂的静态及动态吸附解吸动力学特性,并对树脂动态柱层析的工艺条件进行优化。结果表明,D101大孔树脂较适宜于竹叶黄酮提取物的纯化;动态柱层析的工艺条件...采用大孔树脂吸附分离的方法对粉单竹竹叶黄酮提取物进行纯化,探讨D101大孔吸附树脂的静态及动态吸附解吸动力学特性,并对树脂动态柱层析的工艺条件进行优化。结果表明,D101大孔树脂较适宜于竹叶黄酮提取物的纯化;动态柱层析的工艺条件为:上样溶液的p H为8.0,上样流速1.0 m L/min,分别用2倍柱床体积的20%、40%、60%及80%乙醇以1.5 m L/min的洗脱速率进行阶梯梯度洗脱。在优化工艺条件下,可以收集得到纯度分别为50.9%、38.0%、35.8%等3个竹叶黄酮产品,黄酮总回收率可达63%左右。该工艺既可满足产品高纯度的要求,又保证了竹叶黄酮的高回收利用率,具有可行性。展开更多
基金Supported by Key Project of Science and Technology of Luzhou City(651)
文摘[Objective] This study aimed to optimize the conditions for purification of total flavones from litchi pericarp by macroporous absorption resin.[Method] The flavones adsorption rates and desorption rates of macroporous absorption resins(AB-8,HPD-600,D101) were compared,and the technological parameters of D101 during the purification process were investigated.[Result] D101 macroporous absorption resin was appropriate for the purification of total flavonoids from litchi pericarp.The optimal technological conditions were selected:the pH of sample solution was 5.0;concentration of sample solution was 4 mg/ml,with a volume of 2.5BV;80% ethanol was used as elution solution,with a volume of 2.0BV.[Conclusion] The content of total flavones achieved 83% after separation by D101 macoporous absorption resin.
文摘采用大孔树脂吸附分离的方法对粉单竹竹叶黄酮提取物进行纯化,探讨D101大孔吸附树脂的静态及动态吸附解吸动力学特性,并对树脂动态柱层析的工艺条件进行优化。结果表明,D101大孔树脂较适宜于竹叶黄酮提取物的纯化;动态柱层析的工艺条件为:上样溶液的p H为8.0,上样流速1.0 m L/min,分别用2倍柱床体积的20%、40%、60%及80%乙醇以1.5 m L/min的洗脱速率进行阶梯梯度洗脱。在优化工艺条件下,可以收集得到纯度分别为50.9%、38.0%、35.8%等3个竹叶黄酮产品,黄酮总回收率可达63%左右。该工艺既可满足产品高纯度的要求,又保证了竹叶黄酮的高回收利用率,具有可行性。