title: Dual enzymatic biosensor for simultaneous amperometric determination of histamine and putrescine.
abstract: A disposable electrodic system consisting of two working electrodes connected in array mode has been developed for the simultaneous determination of histamine (His) and putrescine (Put). Histamine deshydrogenase and putrescine oxidase enzymes were respectively immobilized by crosslinking on each working screen-printed electrode, both modified with tetrathiafulvalene. The dual system allowed the simultaneous amperometric determination of both species by measuring the oxidation current of the mediator in each working electrode. The effect of other potentially interfering biogenic amines was also evaluated. The capability of detection was of 8.1 ± 0.7 for His and 10 ± 0.6 μM for Put. The precision in terms of relative standard deviation was of 3.5% and 6.7% for His and Put, respectively. The developed biosensor was successfully applied to the determination of His and Put in different food samples.
authors.affiliation: Analytical Chemistry Department, Faculty of Sciences, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
authors.forename: W
authors.initials: W
authors.lastname: Henao-Escobar
authors.affiliation: Analytical Chemistry Department, Faculty of Sciences, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Del Torno-de Román
authors.affiliation: Analytical Chemistry Department, Faculty of Sciences, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain. Electronic address: olgado@ubu.es.
authors.forename: O
authors.initials: O
authors.lastname: Domínguez-Renedo
authors.affiliation: Analytical Chemistry Department, Faculty of Sciences, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
authors.forename: M A
authors.initials: MA
authors.lastname: Alonso-Lomillo
authors.affiliation: Analytical Chemistry Department, Faculty of Sciences, University of Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
authors.forename: M J
authors.initials: MJ
authors.lastname: Arcos-Martínez
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods*; D004566:Electrodes; D004800:Enzymes, Immobilized; D006632:Histamine / Q000737:chemistry*; D011700:Putrescine / Q000737:chemistry*
chemical_list: D004800:Enzymes, Immobilized; D006632:Histamine; D011700:Putrescine
keywords: Dual enzymatic biosensor; Histamine; Putrescine; Screen-printed electrodes; Simultaneous determination