Author, as appears in the article.: Guadarrama-Fernández L; Novell M; Blondeau P; Andrade F

Department: Química Analítica i Química Orgànica

URV's Author/s: Andrade, Francisco Javier / Blondeau, Pascal Jean Claude Leon / NOVELL RECASENS, MARTA

Keywords: Potentiometric detection Paper-based platforms Glucose sensing Electrochemical sensor paper-based platforms glucose sensing electrochemical sensor

Abstract: © 2018 Elsevier Ltd A new biosensor for monitoring glucose levels in beverages is presented. The measurements are performed using potentiometric detection. Working electrodes are made using platinised paper as support and a biocompatible polymeric membrane made of a mixture of polyvinyl alcohol and chitosan containing glucose oxidase as the recognition layer. The system is based on the detection of the hydrogen peroxide generated by an enzymatic reaction performed in a highly sensitive, selective and simple way. The biosensors display suitable analytical performance (sensitivity −119.6 ± 6.4 mV/dec in the 0.03–1.0 mM range with a limit of detection of 0.02 mM). Determination of glucose in commercial orange juices is presented. These results were validated against conventional standard methods, showing good accuracy and fast analytical response. The methodology presented herein does not require complex samples treatment, offering an alternative to conventional methods, particularly for determinations performed with minimal expertise and without a laboratory infrastructure.

Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Odontología Nutrition & dietetics Nutrição Medicine (miscellaneous) Medicina veterinaria Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências Food science & technology Food science Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Enfermagem Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, applied Biotecnología Biodiversidade Astronomia / física Analytical chemistry Administração pública e de empresas, ciências contábeis e turismo

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 03088146

Author's mail: pascal.blondeau@urv.cat franciscojavier.andrade@urv.cat

Author identifier: 0000-0003-1331-5055 0000-0003-1199-2837

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/acceptedVersion

Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S030881461830894X

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Food Chemistry. 265 64-69

APA: Guadarrama-Fernández L; Novell M; Blondeau P; Andrade F (2018). A disposable, simple, fast and low-cost paper-based biosensor and its application to the determination of glucose in commercial orange juices. Food Chemistry, 265(), 64-69. DOI: 10.1016/j.foodchem.2018.05.082

Article's DOI: 10.1016/j.foodchem.2018.05.082

Entity: Universitat Rovira i Virgili

Journal publication year: 2018

Publication Type: Journal Publications