浙江农业科学 ›› 2026, Vol. 67 ›› Issue (9): 2270-2274.DOI: 10.16178/j.issn.0528-9017.20260181

• 食品技术 • 上一篇    下一篇

高效液相色谱法测定果蔬中维生素C的方法改进与验证

陈国()   

  1. 宁波市农业科学研究院,浙江 宁波 315101
  • 收稿日期:2026-03-13 出版日期:2026-09-11 发布日期:2026-09-24
  • 作者简介:陈国,主要从事食品检测工作。E-mail:cguo8888@163.com。

Improvement and validation of an HPLC method for the determination of vitamin C in fruits and vegetables

CHEN Guo()   

  1. Ningbo Academy of Agricultural Sciences,Ningbo 315101,Zhejiang
  • Received:2026-03-13 Online:2026-09-11 Published:2026-09-24

摘要:

针对果蔬基质中维生素C易氧化变质、色谱测定干扰多的技术难点,本研究对现有高效液相色谱(HPLC)法的还原步骤与色谱条件进行优化。结果表明,还原处理前L-抗坏血酸、D-异抗坏血酸含量及还原处理后L-抗坏血酸、D-异抗坏血酸含量的检出限分别低至0.14、0.13、0.35和0.32 mg·kg-1,两种异构体在测定范围内线性良好,决定系数(R2)≥0.999 9,在低、中、高3水平加标回收实验中(n=7),回收率为90.0%~106.0%,相对标准偏差≤2.5%。改进后的方法操作简便、基质干扰少,能够同时满足维生素C氧化前后的含量测定,适用于果蔬样品的批量检测与推广。

关键词: 高效液相色谱法, 维生素C, 果蔬, 检出限, 回收率

Abstract:

To address the issues of oxidative degradation of vitamin C and severe chromatographic interference in fruit and vegetable matrices,this study optimized the reduction procedure and chromatographic conditions of the existing high-performance liquid chromatography(HPLC)method. The results showed that limits of detection for L-ascorbic acid and D-isoascorbic acid before reduction,and for L-ascorbic acid and D-isoascorbic acid after reduction,were as low as 0.14,0.13,0.35,and 0.32 mg·kg-1,respectively. Both isomers exhibited good linearity within the respective concentration ranges,with coefficient of determination(R2)of no less than 0.999 9. In the three-level(low,medium,and high)spiked recovery experiments(n=7),the recovery rates ranged from 90.0% to 106.0%,with relative standard deviations of no more than 2.5%. The improved method is simple in operation with less matrix interference,and can simultaneously determine the content of vitamin C before and after oxidation,making it suitable for batch detection and routine application for fruit and vegetable samples.

Key words: high-performance liquid chromatography, vitamin C, fruits and vegetables, limit of detection, recovery rate

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