乳业科学与技术 ›› 2024, Vol. 47 ›› Issue (3): 35-40.DOI: 10.7506/rykxyjs1671-5187-20240521-036

• 分析检测 • 上一篇    下一篇

液相色谱法测定特殊医学用途婴幼儿配方食品中VC

吴秀萍,程白羽,许小茜,姜睿彧   

  1. (上海市质量监督检验技术研究院,上海 200233)
  • 出版日期:2024-05-01 发布日期:2024-08-26

Determination of Vitamin C in Formulas for Special Medical Purpose Intended for Infants by Liquid Chromatography

WU Xiuping, CHENG Baiyu, XU Xiaoqian, JIANG Ruiyu   

  1. (Shanghai Institute of Quality Inspection and Technical Research, Shanghai 200233, China)
  • Published:2024-05-01 Online:2024-08-26

摘要: 建立液相色谱法检测特殊医学用途婴幼儿配方食品中VC含量的分析方法。样品还原处理后,经HLB固相萃取柱净化、微孔滤膜过滤后进行亲水作用液相色谱法测定,外标法定量,对检测方法进行验证。结果表明:在质量浓度为0~50 μg/mL范围内其线性相关系数≥0.999,定量限为3.0 mg/100 g,加标回收率为95.2%~102.8%,相对标准偏差为1.22%~3.62%;该方法具有操作简单、结果准确和重复性好等特点,适用于特殊医学用途婴幼儿配方食品中VC含量的测定。

关键词: 特殊医学用途婴幼儿配方食品;VC;液相色谱法;亲水作用液相色谱

Abstract: A liquid chromatography (LC) method for the determination of vitamin C in formulas for special medical purpose intended for infants was established and validated. The sample was reduced, purified using an HLB solid phase extraction (SPE) cartridge, filtered through a 0.45 μm filter, and analyzed by hydrophilic interaction liquid chromatography (HILIC). The calibration curve was found to be linear in the concentration range of 0–50 μg/mL with correlation coefficient over 0.999. The limit of quantitation (LOQ) was 3.0 mg/100 g. Recoveries of spiked samples ranged from 95.2% to 102.8% with relative standard deviation (RSD) between 1.22% and 3.62%. The method is characterized by simple operation, accurate results and good reproducibility and suitable to determine vitamin C in formulas for special medical purpose intended for infants.

Key words: formulas for special medical purpose intended for infants; vitamin C; liquid chromatography; hydrophilic interaction liquid chromatography

中图分类号: