Producción Científica Profesorado

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



Castañeda Ovando, Araceli

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.






Artículos relacionados

Behavior of Salmonella Typhimurium, Staphylococcus aureus, Listeria monocytogenes, and Shigella flex...

CALIDAD MICROBIOLÓGICA DE PALETAS BASE AGUA Y BASE LÁCTEA ELABORADAS EN EL ESTADO DE HIDALGO, MÉXICO

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

Evaluación del Efecto Antihiperglucémico del Bagazo de Naranja (Citrus sinensis var.Valencia) en Est...

Sensory profile and Chemicals composition of Opuntia joconostle from Hidalgo, Mexico

The Avrami Index and the Fractal Dimension in Vegetable Oil Crystallization

EVALUACIÓN DE LAS CARACTERÍSTICAS FISICOQUÍMICAS EN LA ESPECIE DE FRIJOL PHASEOLUS VULGARIS DE LAS V...

Evaluación del Efecto Antihiperglucémico del Bagazo de Naranja (Citrus sinensis var. Valencia) en Es...

Composición química de cebadas cultivadas bajo diferentes condiciones de labranza en tres localidade...

INCORPORACIÓN DE ÁCIDOS GRASOS OMEGA 3 EN HUEVO DE GALLINAS PONEDORAS A TRAVÉS DE LA SUPLEMENTACIÓN ...