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Novel magnetic fluorescence probe based on carbon quantum dots-doped molecularly imprinted polymer for AHLs signaling molecules sensing in fish juice and milk.

Authors
  • Cui, Zhimeng1
  • Li, Zhuanying2
  • Jin, Yuting2
  • Ren, Taotao2
  • Chen, Jin'ai2
  • Wang, Xianghong3
  • Zhong, Keli4
  • Tang, Lijun4
  • Tang, Yiwei5
  • Cao, Meirong6
  • 1 College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; College of Food Science & Project Engineering, Bohai University, Jinzhou 121013, China. , (China)
  • 2 College of Food Science & Project Engineering, Bohai University, Jinzhou 121013, China. , (China)
  • 3 College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China. , (China)
  • 4 College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China. , (China)
  • 5 College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; College of Food Science & Project Engineering, Bohai University, Jinzhou 121013, China. Electronic address: [email protected] , (China)
  • 6 College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; Hebei Food Inspection and Research Institute, Hebei Food Safety Key Laboratory, Shijiazhuang 050091, China. , (China)
Type
Published Article
Journal
Food chemistry
Publication Date
Oct 30, 2020
Volume
328
Pages
127063–127063
Identifiers
DOI: 10.1016/j.foodchem.2020.127063
PMID: 32485582
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

A magnetic fluorescence probe was fabricated by coating carbon quantum dots-doped molecularly imprinted polymers (MIPs) layers on the surface of Fe3O4 particles (MFMP) for detection of N-acyl homoserine lactones (AHLs) signaling molecules. N-Z-L-homoserine lactone molecular was used as the template to prepare AHLs MIP layers, employing MAA and HEMA as functional monomers. The developed MFMP owned superparamagnetism, fluorescence, fast response and class-selectivity. If AHLs (C4-HSL, C6-HSL, C8-HSL, C10-HSL, C12-HSL and C14-HSL) were captured by the MFMP, they quenched the fluorescence of the probe. Fluorescence dropped linearly in the concentration ranges of 3.65 × 10-3 μmol/L-0.96 × 10-1 μmol/L for AHLs. The MFMP was applied to the analysis of fish juice and milk samples, and recoveries ranged from 83.10% to 90.74% with relative standard deviation less than 5.1%. This study offered a novel strategy to fabricated AHLs fluorescence probe with great potential for wide-ranging application in agri-food products. Copyright © 2020 Elsevier Ltd. All rights reserved.

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