食品科学

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手性色谱法测定L-乳酸锌

何悦铭1,王 杉2,揭琴丰2,邱伟华2,黄晓婉1,邓泽元1,*   

  1. 1.南昌大学 食品科学与技术国家重点实验室,江西 南昌 330047;2.江西省疾病预防控制中心,江西 南昌 330029
  • 出版日期:2015-07-25 发布日期:2015-07-15
  • 通讯作者: 邓泽元
  • 基金资助:

    2013年食品安全国家标准制定项目(spaq-2013-25)

Methodology Validation for Determination of L-Zinc Lactate by High Performance Liquid Chromatography with A Chiral Column

HE Yueming1, WANG Shan2, JIE Qinfeng2, QIU Weihua2, HUANG Xiaowan1, DENG Zeyuan1,*   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
    2. Center for Disease Control and Prevention of Jiangxi Province, Nanchang 330029, China
  • Online:2015-07-25 Published:2015-07-15
  • Contact: DENG Zeyuan

摘要:

研究高效液相色谱法测定乳酸锌中L-乳酸锌含量的方法,并对此方法学进行探讨。采用OA-5000手性色谱柱,1 mmol/L CuSO4·5H2O溶液为流动相,流速为1 mL/min进行色谱分离DL-乳酸锌,分离效果好。L-乳酸锌在0.147~3.675 mg/mL范围内呈现良好的线性关系,相关系数达0.999 9(n=6);精密度实验相对标准偏差为0.044%;稳定性实验相对标准偏差为0.061%;平均回收率达(99.8±1.90)%,相对标准偏差仅为1.90%。表明此方法操作简便,结果准确可靠,可用于L-乳酸锌的准确测定和品质监控。

关键词: 高效液相色谱法, 乳酸锌, 手性

Abstract:

This paper describes the development of a validated method for determining L-zinc lactate by high performance
liquid chromatography (HPLC). An ideal chromatographic separation between D-zinc lactate and L-zinc lactate was achieved
on an OA-5000 chiral column using 1 mmol/L CuSO4·5H2O as mobile phase at a flow rate of 1 mL/min. The established
calibration curve showed a good linearity over the concentration range of 0.147 to 3.675 mg/mL, with a correlation
coefficient of 0.999 9 (n = 6). The relative standard deviation (RSD) for precision and stability were respectively 0.044%
was and 0.061%, and the average recovery was (99.8 ± 1.90)% with RSD of 1.90%. It is shown that this method is simple,
accurate and reliable, and can be used to monitor the content of L-zinc lactate.

Key words: high performance liquid chromatography (HPLC), L-zinc lactate, chirality

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