Producción Científica Profesorado

Voltammetric Approach For The Quantification of Aflatoxin B1 Using a Bismuth-Modified Electrode



Galan Vidal, Carlos Andres

2021

Aldahir A. Hernández-Hernández, Araceli Castañeda-Ovando, Luis H. Mendoza-Huizar, Miriam Franco-Guzmán, Karla X. Meneses-Pimentel, Carlos A. Galán Vidal, María E. Páez-Hernández, G. A. Álvarez Romero. A Novel Voltammetric Approach For The Quantification of Aflatoxin B1 Using a Bismuth-Modified Electrode. J. Electrochem. Soc. 2021, 168, 026512. DOI: 10.1149/1945-7111/abe349


Abstract


Aflatoxins are high-toxic secondary metabolites of Aspergillus fungus, which contaminate food at trace levels. Promising voltammetric methods were developed using mercury electrodes, however, they have negative effects on the environment. This work proposes the development and optimization of a differential pulse voltammetric methodology for the quantification of Aflatoxin B1 through bismuth film electrodes by the reduction of aflatoxin. Aflatoxin B1 reduction is controlled by its diffusion towards the electrode's surface. Optimal conditions for the preparation of the bismuth film and differential pulse voltammetry were obtained by Box-Behnken experimental designs, considering the maximization of the Aflatoxin B1 cathodic peak current. The LOD and LOQ resulted to be 11.2 ng l?1 and 37.3 ng l?1 respectively. The values for the reproducibility and repeatability as %RSD, using a 38.46 ng l?1 solution of Aflatoxin B1 for the measurements, were 5.3% and 4.6%, respectively. The proposed methodology was statistically validated using certified Aflatoxin B1 standard solutions and milk samples successfully analyzed, demonstrating that the proposed methodology represents a novel, low-cost, environmentally-friendly approach for the quantification of Aflatoxin B1.



Producto de Investigación




Artículos relacionados

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane

Electrochemical kinetic study about cobalt electrodeposition onto GCE and HOPG substrates from sulfa...

THEORETICAL STUDY ON THE MODIFICATION OF ACTIVE SITES IN GOLD SURFACES MODELED AS FINITE CLUSTERS: I...

Effect of TiO2-Al2O3 sol-gel supports on the superficial Ni and Mo species in oxidized and sulfided ...

Chemical Reactivity of Atrazine Employing the Fukui Function

Cobalt electrodeposition on polycrystalline palladium. Influence of temperature on kinetic parameter...

Evaluación de Esteroides Aromáticos como Indicadores de Madurez Térmica en Extractos de Roca

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

ELECTROCHEMICAL STUDY ABOUT ZINC ELECTRODEPOSITION ONTO GCE AND HOPG SUBSTRATES

Synthesis of Zn compounds derived from 1H-benzimidazol-2-ylmethanamine