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Updated: Jul 2, 2026
Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography
Published on: December 27, 2024
Simultaneous determination of vitamin A and E in infant formula using a modified QuEChERS approach coupled with
Xiaotong Zhao1,2, Xiaomin Li1, Shuangxia Luo1,2
1Food Safety Analysis Laboratory, Division of Chemical Metrology and Analytical Science, Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, National Institute of Metrology, Beijing 100029, PR China.
None:
The simultaneous determination of vitamin A and E vitamers in complex matrices presents a significant analytical challenge. To address this, we validated a straightforward method based on a QuEChERS pretreatment coupled with ultrahigh-performance liquid chromatography and diode array detection (QuEChERS-UPLC-DAD). The modified QuEChERS pretreatment procedure integrates saponification and extraction processes into a single step, enabling efficient phase separation, reducing analysis time, and eliminating the need for a salting-out step. Notably, this approach simultaneously accomplishes a recovery of 83.2% to 100.5%, a relative standard deviation of less than 4.6%. The accuracy of the proposed QuEChERS-UPLC-DAD method was confirmed through comparison with a UPLC-IDMS/MS method and analysis of a commercial certified reference material (NIST SRM 1869). Importantly, the approach was successfully applied to analyze various complex dairy products, including infant formula, milk, yogurt, and dairy beverages. Therefore, QuEChERS-UPLC-DAD approach is well-suited for routine quality control and nutritional assessment.
