Quantification of ochratoxin A in a coffee sample utilizing an electrochemical aptasensor fabricated through encapsulation of toluidine blue within a Zn-based metal-organic framework.

Elaheh Amini-Nogorani, Hamid R Zare, Fahime Jahangiri-Dehaghani, Ali Benvidi

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Article in Mikrochimica acta, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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4 authors.

Elaheh Amini-NogoraniDepartment of Chemistry, Yazd University, Yazd, 89195-741, Iran.

Hamid R ZareDepartment of Chemistry, Yazd University, Yazd, 89195-741, Iran. hrzare@yazd.ac.ir.

Fahime Jahangiri-DehaghaniDepartment of Chemistry, Yazd University, Yazd, 89195-741, Iran.

Ali BenvidiDepartment of Chemistry, Yazd University, Yazd, 89195-741, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An electrochemical aptasensor has been developed specifically for the sensitive and selective determination of ochratoxin A (OTA), one of the most important mycotoxins. The aptasensor utilizes a glassy carbon electrode that has been modified with toluidine blue (TB) encapsulated in a Zn-based metal-organic framework (TB@Zn-MOF). The results demonstrate that in the presence of OTA, the peak current of the differential pulse voltammogram (DPV) related to TB oxidation is notably decreased. The changes in the oxidation peak current of TB encapsulated in Zn-MOF, both in the absence and presence of OTA, serve as an analytical signal for accurately measuring its concentration. With the proposed aptasensor, OTA can be determined within a linear concentration range 1.0 × 10

Indexed as

Aptamers, NucleotideBiosensing TechniquesCoffeeElectrochemical TechniquesLimit of DetectionMetal-Organic FrameworksOchratoxinsTolonium ChlorideZincElectrodesFood ContaminationAptamers, NucleotideCoffeeMetal-Organic Frameworksochratoxin AOchratoxinsTolonium ChlorideZincDifferential pulse voltammetryElectrochemical aptasensorModified glassy carbon electrodeOchratoxin AToluidine blueZn–based metal organic framework

Identifiers

PMID39710829

DOI10.1007/s00216-023-04864-8

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.