Electrochemical identification of toxigenic fungal species using solid-state voltammetry strategies. (30th November 2018)

• Record Type: Journal Article
• Authors: Mateo, Eva M.; Gómez, José Vicente; Montoya, Noemí; Mateo-Castro, Rufino; Gimeno-Adelantado, José Vicente; Jiménez, Misericordia; Doménech-Carbó, Antonio
• Is Part Of: Food chemistry. Volume 267(2018)
• Page Start: 91
• Page End: 100
• Publication Date: 2018-11-30
• Subjects: Mycotoxin-producing fungi -- Voltammetry -- Species identification; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2017.02.033
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Mycotoxin-producing fungal species are electrochemically characterized. Species of the genera Aspergillus and Fusarium are identified. Voltammetric signals associated to the oxidation of polyphenolic metabolites are recorded. Abstract: An electrochemical methodology for the characterization of mycotoxin-producing fungal species from the genera Aspergillus and Fusarium using solid-state voltammetry is described. Upon attachment of fungal colony microsamples to glassy carbon electrodes in contact with aqueous acetate buffer, characteristic voltammetric signals mainly associated to the oxidation of polyphenolic metabolites are recorded. The possibility of fungi-localized electrochemical processes was assessed by means of electron microscopy and field emission scanning electrochemical microscopy coupled to the application of oxidative potential inputs. Using pattern recognition methods, the determined voltammetric profiles were able to discriminate between mycotoxin-producing fungi from different sections and to identify selected toxigenic species of the Aspergillus and Fusarium genera isolated from grapes and cereals.