食品科学

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叶黄素及其顺式异构体的快速检测

李大婧1,2,刘春菊1,2,肖亚冬1,庞慧丽1,刘春泉1,2,*   

  1. 1.江苏省农业科学院农产品加工研究所,江苏 南京 210014;
    2.国家蔬菜加工技术研发专业分中心,江苏 南京 210014
  • 出版日期:2016-02-25 发布日期:2016-02-23
  • 通讯作者: 刘春泉
  • 基金资助:

    江苏省农业科学院基本科研业务专项(ZX(15)1008)

A Method for Rapid Determination of Lutein and Its Stereoisomers

LI Dajing1,2, LIU Chunju1,2, XIAO Yadong1, PANG Huili1, LIU Chunquan1,2,*   

  1. 1. Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
    2. National Vegetable Processing Technology R&D Sub-centers, Nanjing 210014, China
  • Online:2016-02-25 Published:2016-02-23
  • Contact: LIU Chunquan

摘要:

为了建立分离度好、分离效率高的叶黄素顺、反异构体检测方法。通过对检测波长、流动相、流动相比例和流速等色谱条件的摸索和优化,确定最佳色谱条件,并采用光谱、高效液相色谱、质谱等方法对叶黄素顺、反异构体进行定性定量分析。结果表明:该方法流动相为二氯甲烷-乙腈-甲醇(20∶30∶50,V/V),流速为1.0 mL/min,叶黄素热异构化样品中各物质在12 min内达到有效分离,无拖尾现象,峰形较好;在叶黄素热异构化样品中鉴定出15-顺式、13/13′-顺式和9/9′-顺式叶黄素顺式异构体及全反式叶黄素,全反式叶黄素在4~260 ng范围内峰面积与进样量呈良好线形性关系,回收率在95%以上,精密度和稳定性相对标准偏差均小于2%。该方法分离度好、准确性高、重现性好。

关键词: 叶黄素, 顺、反异构体, 检测方法

Abstract:

This study aimed to establish a rapid method for the determination of lutein stereoisomers by high performance
liquid chromatography-diode array detection (HPLC-DAD) combined with atmospheric pressure chemical ionization mass
spectrometry (APCI-MS). Using a mobile phase composed of dichloromethane, acetonitrile and carbinol (20:30:50, V/V)
at a flow rate of 1.0 mL/min, lutein and its stereoisomers were separated effectively with good shape and without tailing
phenomenon. Lutein generated 15-, 13,13’- and 9,9’-mono-cis-lutein during thermal isomerization as identified based on the
maximum absorption wavelength, Q value, mass spectral characteristics and relevant literature data. Peak area and injection
amount of lutein showed a good linear relationship in the range of 4–260 ng. The recovery rate was higher than 95%, and
the relative standard deviations (RSDs) of both precision and stability were lower than 2%. The method has the advantage of
good separation, high accuracy and repeatability.

Key words: lutein, stereoisomers, measurement

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