Lutein and lutein esters in marigold flowers was quantitatively determined by high performance chromatography (HPLC) with ODS-C 18 column.A mixture of CH3CNCD*2CH3OHCD*2CH3COOCH2CH3 with volume ratio of 55∶1∶44 wa...Lutein and lutein esters in marigold flowers was quantitatively determined by high performance chromatography (HPLC) with ODS-C 18 column.A mixture of CH3CNCD*2CH3OHCD*2CH3COOCH2CH3 with volume ratio of 55∶1∶44 was used as mobile phase at a flow rate of 1.0 mL/min and detection was carried out at 460nm. The column temperature was about 20℃. The contents of lutein and lutein esters were determined by analytical curve of lutein since lutein and lutein esters have the same spectral characteristics. Determination results of hexane extracts and saponified samples of lutein show that the saponification transforms the esters into free lutein. The increase of the content of dipalmitate and palmitate stearate reveals that the reaction includes transesterifications.展开更多
建立了万寿菊中叶黄素含量的优化检测方法。采用高效液相色谱法,Hypersil 300 A C_(18)5μm柱,流动相为正己烷:乙酸乙酯:异丙酮=146:54:3,流速为1.0 mL/min,检测波长为460nm。结果:在(10~100)μg/mL范围内,叶黄素浓度与峰面积...建立了万寿菊中叶黄素含量的优化检测方法。采用高效液相色谱法,Hypersil 300 A C_(18)5μm柱,流动相为正己烷:乙酸乙酯:异丙酮=146:54:3,流速为1.0 mL/min,检测波长为460nm。结果:在(10~100)μg/mL范围内,叶黄素浓度与峰面积呈良好的线性关系,r=0.9958;RSD=0.68%;平均回收率为98.95%。该方法简单、灵敏度高、重现性好,为今后万寿菊中叶黄素成分的分析和叶黄素相关产品的开发提供依据。展开更多
文摘Lutein and lutein esters in marigold flowers was quantitatively determined by high performance chromatography (HPLC) with ODS-C 18 column.A mixture of CH3CNCD*2CH3OHCD*2CH3COOCH2CH3 with volume ratio of 55∶1∶44 was used as mobile phase at a flow rate of 1.0 mL/min and detection was carried out at 460nm. The column temperature was about 20℃. The contents of lutein and lutein esters were determined by analytical curve of lutein since lutein and lutein esters have the same spectral characteristics. Determination results of hexane extracts and saponified samples of lutein show that the saponification transforms the esters into free lutein. The increase of the content of dipalmitate and palmitate stearate reveals that the reaction includes transesterifications.
文摘建立了万寿菊中叶黄素含量的优化检测方法。采用高效液相色谱法,Hypersil 300 A C_(18)5μm柱,流动相为正己烷:乙酸乙酯:异丙酮=146:54:3,流速为1.0 mL/min,检测波长为460nm。结果:在(10~100)μg/mL范围内,叶黄素浓度与峰面积呈良好的线性关系,r=0.9958;RSD=0.68%;平均回收率为98.95%。该方法简单、灵敏度高、重现性好,为今后万寿菊中叶黄素成分的分析和叶黄素相关产品的开发提供依据。