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Rapid determination for tyrosine isomers in food based on N-acetyl-L-cysteine/Upconversion nanomaterials target-induced quench by chiral Electrochemiluminescence sensor

文献类型： 外文期刊

作者： Wang, Zhe 1 ; Ren, Yongjiao 1 ; Zhou, Boxi 1 ; Chen, Zhen 1 ; Wang, Zixiao 3 ; Wang, Junying 2 ; Wang, Junping 1 ;

作者机构： 1.Tianjin Univ Sci & Technol, State Key Lab Food Nutr & Safety, 29 Thirteenth Rd,Tianjin Econ & Technol Dev Area, Tianjin 300457, Peoples R China

2.Chinese Acad Agr Sci CAAS, Biotechnol Res Inst BRI, Beijing, Peoples R China

3.Beijing Univ Chinese Med, Beijing 100029, Peoples R China

关键词： Tyrosine isomers; Chiral electrochemiluminescence sensor; N-acetyl-L-cysteine; Upconversion nanoparticles; Food nutrition

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 463 卷

页码：

收录情况： SCI

摘要： Rapid determination of amino acid isomer is very important for the evaluation of the amino acid nutrition in different foods, so a fast and sensitive electrochemiluminescence (ECL) sensor was innovatively fabricated for the determination of tyrosine isomers in foods based on N-Acetyl-L-cysteine/upconversion nanomaterials possessed a good particular selectivity to L-tyrosine. Under the optimal conditions, for L-tyrosine, the limit of detection (LOD) of the sensor for L-tyrosine was 2.87 x 10(-6) M, detection range of 5.5 x 10(-5)-5.5 x 10(-3) M, for D-tyrosine, LOD was 2.56 x 10(-5) M, detection range was from 5.5 x 10(-4) to 5.5 x 10(-3) M. The developed chiral sensor was used to determinate the tyrosine isomers in foods successfully, which provided a convenient method to quickly evaluate the nutritional value of amino acids in food.

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