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Detection of Listeria monocytogenes in foods with a textile organic electrochemical transistor biosensor.
Vizzini, Priya; Beltrame, Elena; Coppedè, Nicola; Vurro, Filippo; Andreatta, Francesco; Torelli, Emanuela; Manzano, Marisa.
Afiliação
  • Vizzini P; Department of Agriculture Food Environmental and Animal Sciences, University of Udine, 33100, Udine, Italy.
  • Beltrame E; Department of Agriculture Food Environmental and Animal Sciences, University of Udine, 33100, Udine, Italy.
  • Coppedè N; Institute of Materials for Electronics and Magnetism IMEM, CNR Parco Area delle Scienze, 43124, Parma, Italy.
  • Vurro F; Institute of Materials for Electronics and Magnetism IMEM, CNR Parco Area delle Scienze, 43124, Parma, Italy.
  • Andreatta F; Polytechnic Department of Engineering and Architecture, University of Udine, 33100, Udine, Italy.
  • Torelli E; Interdisciplinary Computing and Complex BioSystems (ICOS), Centre for Synthetic Biology and Bioeconomy (CSBB), Devonshire Building, Newcastle University, Newcastle upon Tyne, NE1 7RX, UK.
  • Manzano M; Department of Agriculture Food Environmental and Animal Sciences, University of Udine, 33100, Udine, Italy. marisa.manzano@uniud.it.
Appl Microbiol Biotechnol ; 107(11): 3789-3800, 2023 Jun.
Article em En | MEDLINE | ID: mdl-37145160
Foods contaminated by pathogens are responsible for foodborne diseases which have socioeconomic impacts. Many approaches have been extensively investigated to obtain specific and sensitive methods to detect pathogens in food, but they are often not easy to perform and require trained personnel. This work aims to propose a textile organic electrochemical transistor-based (OECT) biosensor to detect L. monocytogenes in food samples. The analyses were performed with culture-based methods, Listeria Precis™ method, PCR, and our textile OECT biosensor which used poly(3,4-ethylenedioxythiophene) (PEDOT):polystyrene sulfonate (PSS) (PEDOT:PSS) for doping the organic channel. Atomic force microscopy (AFM) was used to obtain topographic maps of the gold gate. The electrochemical activity on gate electrodes was measured and related to the concentration of DNA extracted from samples and hybridized to the specific capture probe immobilized onto the gold surface of the gate. This assay reached a limit of detection of 1.05 ng/µL, corresponding to 0.56 pM of L. monocytogenes ATCC 7644, and allowed the specific and rapid detection of L. monocytogenes in the analyzed samples. KEYPOINTS: • Textile organic electrochemical transistors functionalized with a specific DNA probe • AFM topographic and surface potential maps of a functionalized gold gate surface • Comparison between the Listeria monocytogenes Precis™ method and an OECT biosensor.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Técnicas Biossensoriais / Listeria monocytogenes Tipo de estudo: Diagnostic_studies Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Técnicas Biossensoriais / Listeria monocytogenes Tipo de estudo: Diagnostic_studies Idioma: En Ano de publicação: 2023 Tipo de documento: Article