Determination of two protein-bound advanced glycation end-products in bread by ultra-high performance liquid chromatography-tandem mass spectrometry based on protein precipitation
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1.Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, China;2.Yeast Function Hubei Provincial Key Laboratory, Angel Yeast Co, Ltd., Hubei Yichang 443000, China

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R155

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    Abstract:

    Objective To establish an ultra-high performance liquid chromatography-tandem mass spectrometry method for the detection of two typical advanced glycation end products (AGEs) in bread.Methods Protein-bound carboxymethyl lysine (CML) and carboxyethyl lysine (CEL) were used as the detection objects. Bread sample was subjected to reduction incubation, protein precipitation, addition of isotope internal standard, acid hydrolysis, nitrogen blowing, reconstitution with nonafluorovaleric acid aqueous solution, and then underwent multi-reaction monitoring to quantitative analysis.Results The detection limit and quantification limit of the method were 4.5 ng/g and 20 ng/g for CML, and 0.5 ng/g and 2 ng/g for CEL. The spike recovery rates of CML and CEL were 89.62%-95.65% and 86.38%-97.17%. The linear range were 2.5-800 ng/mL and 0.25-80 ng/mL, and the coefficients of determination were both above 0.999.Conclusion The method was accurate and sensitive, and could meet the detection requirements of AGEs in bread.

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JIANG Guanhua, YU Haili, WANG Pei, WANG Qiang, CHEN Liangkai, ZHANG Yan, LIU Liegang. Determination of two protein-bound advanced glycation end-products in bread by ultra-high performance liquid chromatography-tandem mass spectrometry based on protein precipitation[J].中国食品卫生杂志,2023,35(4):517-521.

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History
  • Received:December 22,2021
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  • Online: July 03,2023
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