食品科学

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离子色谱法测定黑果枸杞中的甜菜碱

耿丹丹1,2,谭 亮1,肖远灿1,胡风祖1,董 琦1,*   

  1. 1.中国科学院西北高原生物研究所,青海 西宁 810008;2.中国科学院大学生命科学学院,北京 100049
  • 出版日期:2015-10-25 发布日期:2015-10-20
  • 通讯作者: 董 琦
  • 基金资助:

    中国科学院仪器功能开发技术创新项目(Ig201308)

Determination of Betaine in Lycium ruthenicum Murr. by Ion Chromatography

GENG Dandan1,2, TAN Liang1, XIAO Yuancan1, HU Fengzu1, DONG Qi1,*   

  1. 1. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China;
    2. College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • Online:2015-10-25 Published:2015-10-20
  • Contact: DONG Qi

摘要:

建立黑果枸杞中甜菜碱的离子色谱测定法。采用Metrosep C4阳离子分析柱(150 mm×4.6 mm,4 μm),柱温为38.5 ℃,1.5 mmol/L甲烷磺酸溶液为流动相,流速为0.8 mL/min,电导检测器。结果表明,甜菜碱在10.4~830.0 mg/L质量浓度范围内线性关系良好(R2=0.999 8),加标回收率在95.51%~98.06%(n=3)之间。所建方法操作简便、重复性好,适用于黑果枸杞中甜菜碱含量测定。

关键词: 离子色谱, 黑果枸杞, 甜菜碱

Abstract:

An ion chromatography coupled with conductivity detection method was developed for the determination of
betaine in Lycium ruthenicum Murr.. The analyte was separated on a Metrosep C4 cation exchange column (150 mm ×
4.6 mm, 4 μm) by using methane sulfonic acid (1.5 mmol/L) as mobile phase. The flow rate was 0.8 mL/min at a column
temperature of 38.5 ℃. It was found that the linearity range of betaine was 10.4–830.0 mg/L (R2 = 0.999 8) and the spiked
recoveries varied in the range of 95.51%–98.06%. The proposed method was found to be simple, reproducible and suitable
for the determination of betaine in L. ruthenicum.

Key words: ion chromatography, Lycium ruthenicum Murr., betaine

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