Microchimica Acta

, 186:608 | Cite as

Electrochemiluminescent competitive immunoassay for zearalenone based on the use of a mimotope peptide, Ru(II)(bpy)3-loaded NiFe2O4 nanotubes and TiO2 mesocrystals

  • Dandan Fang
  • Shupei Zhang
  • Hong DaiEmail author
  • Xiuhua LiEmail author
  • Zhensheng HongEmail author
  • Yanyu Lin
Original Paper


An ultrasensitive competitive-type electrochemiluminescence immunoassay for the mycotoxin zearalenone is described. The method is based on the use of (a) a mimotope peptide that was selected from a phage displayed peptide library and used to substitute ZEN for designing the competitive assay; (b) NiFe2O4 nanotubes with large specific surface area loaded with the ECL probe Ru(bpy)32+; and (c) poly(vinylpyrrolidone) (PVP)-assisted synthesis of TiO2 mesocrystals that acts as the sensing platform and support for antibody immobilization. Under the optimized conditions and at an ECL working potential of 1.1 V, a linear response is found for ZEN in the 0.1 to 1.0 × 10−5 ng·mL−1 concentration range with a detection limit as low as 3.3 fg·mL−1.

Graphical abstract

An ultrasensitive competitive-type electrochemiluminescence (ECL) immunosensor based on mimotope peptide was constructed for the detection of Zearalenone.


Competitive immunosensor Zearalenone Phage displayed peptide library Metal oxide Mycotoxin analysis 



This project was financially supported by the NSFC (21877012, 21575024, 21205016), National Science Foundation of Fujian Province (2016 J06003, 2016 J05026, 2017 J01620, 2016 J01429) and Education Department of Fujian Province (JK2016009, FBJG20170186, JA14071) was also greatly acknowledged. All authors thank Huan Yi and Xiangqin Zheng for their help in obtaining and processing actual samples.

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2019_3714_MOESM1_ESM.doc (620 kb)
ESM 1 (DOC 620 kb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Chemistry and Material & College of Physics and Energy Fujian Normal UniversityFuzhouChina
  2. 2.Fujian Provincial Maternity and Children’s HospitalFuzhouChina
  3. 3.Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, and Department of ChemistryFuzhou UniversityFuzhouPeople’s Republic of China

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