Zein/MnO2 Nanosheet Composites Integrated with a Smartphone for Colorimetric Sensors for On-Site Detection of Adulterants in Milk.

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dc.contributorFEDERAL UNIVERSITY OF SÃO CARLOS (UFSCAR)
dc.contributorDANILO MARTINS DOS SANTOS, UNIVERSIDADE DE SÃO PAULO
dc.contributorRAFAELA DA SILVEIRA ANDRE, UNIVERSIDADE FEDERAL DE SÃO CARLOS
dc.contributorDANIEL SOUZA CORREA, CNPDIA.
dc.creatorPEREIRA, T. dos S.
dc.creatorSANTOS, D. M. dos
dc.creatorANDRE, R. da S.
dc.creatorCORREA, D. S.
dc.date2024-07-01T14:56:14Z
dc.date2024-07-01T14:56:14Z
dc.date2024-07-01
dc.date2024
dc.date.accessioned2026-07-07T04:29:28Z
dc.descriptionABSTRACT: Milk and its derivatives are essential sources of nutrients for humans. However, the widespread adulteration of milk poses a significant challenge for ensuring the safety and integrity of these products. Here, a zein/manganese dioxide nanosheet (MnO2 NS) composite-based colorimetric sensor integrated with a smartphone platform was developed for on-site and quantitative analysis of hydrogen peroxide (H2O2) and lactic acid, two common adulterants in milk samples. Sensing platforms were fabricated by spraying composite solutions onto various costeffective and environmentally friendly substrates, including filter paper and masking tape, using a simple airbrush system. These platforms displayed remarkable sensitivity and suitable limit of detection (LOD) of 7.2 × 10−4 mol L−1 for H2O2 and 7.5 × 10−4 mol L−1 for lactic acid, respectively. These concentrations fall within the ranges established by diverse international regulatory bodies responsible for quality assurance protocols. Therefore, the dual detection of H2O2 and lactic acid in milk samples was successfully achieved in a rapid and cost-effective way, which opens possibilities for the design and implementation of field-deployable sensors for food safety surveillance and quality control.
dc.format13701 - 13711
dc.identifierACS Applied Nano Materials, v. 7, 2024.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1165260
dc.identifierhttps://doi.org/10.1021/acsanm.4c02263
dc.identifier.urihttp://hdl.handle.net/123456789/463045
dc.languageeng
dc.rightsopenAccess
dc.subjectFunctional nanomaterials
dc.subjectNutrients for humans
dc.titleZein/MnO2 Nanosheet Composites Integrated with a Smartphone for Colorimetric Sensors for On-Site Detection of Adulterants in Milk.
dc.typeArtigo de periódico

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