A smartphone-enabled visual platform for detecting aflatoxins in peanut oil using colorimetric analysis coupled with magnetic imprinted solid-phase extraction.

Autor: Chen P; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China., Xu Y; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China., Cao J; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China., Zhu Y; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China., Liu X; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China., Hu X; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China; CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China. Electronic address: xuephu@yeah.net., Song X; School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, PR China.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2024 Oct 30; Vol. 456, pp. 139294. Date of Electronic Publication: 2024 Apr 10.
DOI: 10.1016/j.foodchem.2024.139294
Abstrakt: The study aimed to develop a rapid and sensitive colorimetric platform based on the Emerson reaction to visualize and determine total aflatoxins (AFs) in peanut oil. This method offers the advantage of fast screening for AFs (AFB 1 , AFB 2 , AFG 1 , and AFG 2 ), eliminating the need for specific antibodies. The proposed approach combined colorimetric detection with magnetic dummy imprinted solid-phase extraction and purification, enhancing sensitivity and selectivity. The oxidizer aided the colorless AFs in reacting with 4-aminoantipyrine, producing green condensates. Thus, a dual-mode approach was developed for AFs detection, employing both UV-vis colorimetric and smartphone-based colorimetry. Both methods showed a good linear relationship with the concentration of AFs. Notably, the smartphone-based method demonstrated a detection range of 0.5-57 μg/kg, with a detection limit as low as 0.21 μg/kg. The suggested colorimetric methods present a promising potential for onsite detection and fast screening of AFs in actual samples.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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