数字农科院2.0

An integrated calibration strategy for the development and validation of an LC-MS/MS method for accurate quantification of egg allergens (Gal d 1-6) in foods

文献类型： 外文期刊

作者： Yang, Shupeng;Chen, Jingjing;Abdallah, Mohamed F.;Lin, Haopeng;Yang, Peijie;Li, Jianxun;Zhang, Rong;Li, Qianqian;Lu, Peng;Liu, Shuyan;Li, Yi

作者机构：

关键词： Food allergen;Allergen quantification;Validation methods;LC-MS;Calibration curves

期刊名称： FOOD CHEMISTRY

ISSN： 0308-8146

年卷期： 2024 年 438 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Accurate determination of egg allergens in food is vital for allergen management and labeling. However, quantifying egg allergens with mass spectrometry poses challenges and lacks validation methods. Here, we developed and validated an LC-MS/MS method for quantifying egg allergens (Gal d 1-6) in foods. Sample extraction, enzymatic digestion, purification, proteins/peptides selection, and calibration curves were optimized. VMVLC[+57]NR (Gal d 1) and GTDVQAWIR (Gal d 5) exhibited outstanding sensitivity and stability, serving as quantitation markers for egg white and yolk. Using a matrix-matched calibration curve with allergen ingredients as calibrants and labeled peptides as standards, we achieved highly accurate quantitation. Validation involved spiking egg protein into egg-free foods, showing excellent sensitivity (LOQ: 1-5 mg/kg), accuracy (62.4 %-88.5 %), and reproducibility (intra-/inter-day precision: 3.5 %-14.2 %/8.2 %-14.6 %). Additionally, we successfully applied this method to commercial food analysis. These findings demonstrate optimal allergen selection, pep-tides, and calibration strategy are crucial parameters for food allergen quantification via MS-based methods.

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