目的采用超临界CO2流体萃取法及超声波溶剂萃取法从千年健中提取挥发油,用气相色谱-质谱联用技术对其化学成分进行分析。方法采用超临界CO2流体萃取法与超声波溶剂萃取法从千年健中提取挥发油,采用不同类型的毛细管柱进行分析,找出最佳...目的采用超临界CO2流体萃取法及超声波溶剂萃取法从千年健中提取挥发油,用气相色谱-质谱联用技术对其化学成分进行分析。方法采用超临界CO2流体萃取法与超声波溶剂萃取法从千年健中提取挥发油,采用不同类型的毛细管柱进行分析,找出最佳条件,用归一化法测定其百分含量。并用气相色谱-质谱法对化学成分进行鉴定。色谱条件:DB-5毛细管柱(30 m×0.25 mm,0.25μm),柱温60℃(8 m in)4℃.m in-1→250℃(30 m in);分流进样,分流比1∶50;进样口温度280℃。结果超临界CO2流体萃取法提取的挥发油共鉴定了54种成份,占挥发油总成分的93%以上;超声波溶剂萃取法提取挥发油共鉴定了51种成份,占挥发油的89%以上。结论超临界CO2流体萃取法提取的挥发油比超声波溶剂萃取法能更真实、全面的反映药材中的化学成分。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
文摘目的采用超临界CO2流体萃取法及超声波溶剂萃取法从千年健中提取挥发油,用气相色谱-质谱联用技术对其化学成分进行分析。方法采用超临界CO2流体萃取法与超声波溶剂萃取法从千年健中提取挥发油,采用不同类型的毛细管柱进行分析,找出最佳条件,用归一化法测定其百分含量。并用气相色谱-质谱法对化学成分进行鉴定。色谱条件:DB-5毛细管柱(30 m×0.25 mm,0.25μm),柱温60℃(8 m in)4℃.m in-1→250℃(30 m in);分流进样,分流比1∶50;进样口温度280℃。结果超临界CO2流体萃取法提取的挥发油共鉴定了54种成份,占挥发油总成分的93%以上;超声波溶剂萃取法提取挥发油共鉴定了51种成份,占挥发油的89%以上。结论超临界CO2流体萃取法提取的挥发油比超声波溶剂萃取法能更真实、全面的反映药材中的化学成分。
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.