目的确定超临界CO2萃取满山红中黄酮类物质的最佳工艺条件。方法通过正交实验考察最佳萃取工艺条件,并测定萃取物中总黄酮含量。结果最佳工艺条件是:原料粒度65目,萃取压力28 MPa,萃取温度为45℃,夹带剂用量1.5 m l/g。结论采用超临界...目的确定超临界CO2萃取满山红中黄酮类物质的最佳工艺条件。方法通过正交实验考察最佳萃取工艺条件,并测定萃取物中总黄酮含量。结果最佳工艺条件是:原料粒度65目,萃取压力28 MPa,萃取温度为45℃,夹带剂用量1.5 m l/g。结论采用超临界二氧化碳萃取满山红中黄酮类物质是可行的。展开更多
The extraction of alkaloids from sophora flavescens ait with CO2SFE was studied.By use of orthogonal design ,the effects of pressure,temperature and time on extractabilities of alkaloids were studied.The results s...The extraction of alkaloids from sophora flavescens ait with CO2SFE was studied.By use of orthogonal design ,the effects of pressure,temperature and time on extractabilities of alkaloids were studied.The results showed that the optimum conditions of CO2SFE were:pressure 30 MPa,temperature 45℃,time 5h for the extraction,with NH4OH as an alkalizer and MeOH as an entrainer.The extraction rate of supercritical CO2 fluid extraction was about 24 times as that of traditional solvent extraction.展开更多
文摘The extraction of alkaloids from sophora flavescens ait with CO2SFE was studied.By use of orthogonal design ,the effects of pressure,temperature and time on extractabilities of alkaloids were studied.The results showed that the optimum conditions of CO2SFE were:pressure 30 MPa,temperature 45℃,time 5h for the extraction,with NH4OH as an alkalizer and MeOH as an entrainer.The extraction rate of supercritical CO2 fluid extraction was about 24 times as that of traditional solvent extraction.