Title:	Detection of Salmonella typhimurium in food matrices by an amperometric immunosensor with Pequi carbon dot- labeled antibody.
Authors:	CASTELO, R. M. OLIVEITA, M. de A. MENEZES, D. O. SANTANA, R. S. de MELO, A. M. A. FURTADO, R. F. MACHADO, T. F. ALVES, C. R.
Affiliation:	RACHEL MENEZES CASTELO, UNIVERSIDADE ESTADUAL DO CEARÁ; MARÍLIA DE ALBUQUERQUE OLIVEIRA, UNIVERSIDADE ESTADUAL DO CEARÁ; DENILSON OLIVEIRA MENEZES, UNIVERSIDADE ESTADUAL DO CEARÁ; RUAN SOUSA DE SANTANA, UNIVERSIDADE ESTADUAL DO CEARÁ; AIRIS MARIA ARAÚJO MELO, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DO PIAUÍ; ROSELAYNE FERRO FURTADO, CNPAT; TEREZINHA FEITOSA MACHADO, CNPAT; CARLUCIO ROBERTO ALVES, UNIVERSIDADE ESTADUAL DO CEARÁ.
Date Issued:	2026
Citation:	European Food Research and Technology, v. 252, n. 3, 154, Mar. 2026.
Description:	The sandwich amperometric immunosensor based on pequi- derived carbon dots (CDs) for labeling second antibody represents a promising approach for a rapid and quantitative detection of Salmonella sp. in liquid (water used for washing chicken- CWW) and solid (cheese- CC1) samples. The original microbiota of each sample was preserved, and each one was intentionally contaminated with Salmonella enterica serovar Typhimurium. The immunosensor was tested in the presence of Escherichia coli and Staphylococcus aureus, it exhibited specificity and effectively detected Salmonella with a low limit of detection (LOD) which was 0.8 CFU/mL and 0.1 CFU/mL for CWW and CC1, respectively. The electrochemical measurement time was two minutes without pre-enrichment step of the pathogen and the total assay time was about two hours. This study demonstrates the potential of this immunosensor for a rapid and sensitive Salmonella detection in real samples.
Thesagro:	Salmonella Queijo
NAL Thesaurus:	Immunosensors Cheeses
Keywords:	Pequi-nut Carbon dots Chicken washing water Imunosensores Amêndoa de pequi Pontos de carbono Água de lavagem de frango
ISSN:	1438-2385
DOI:	https://doi.org/10.1007/s00217-026-05074-z
Notes:	Título: dot- labeled [i.e. dot-labeled].
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPAT)