Determination of 3,4,5-Trihydroxybenzoic Acid Exploiting a Visible-Light-Driven Photoelectrochemical Platform: Application in Wine and Tea Samples

AUTOR(ES)

Lima, Kayni C. M. S.; Fernandes, Ridvan N.; Santos, Clenilton C. dos; Damos, Flavio S.; Luz, Rita de Cássia S.

FONTE

Journal of the Brazilian Chemical Society

DATA DE PUBLICAÇÃO

2022

RESUMO

The present work is based on the development and application of a photoelectrochemical method for the amperometric determination of 3,4,5-trihydroxybenzoic acid in different samples. The method is based on the use of a photoelectrochemical platform based on a glass slide coated with fluorine-doped tin oxide, which has been modified with cadmium sulfide and poly(D-glucosamine) and subjected to a light-emitting diode (LED) lamp. The photoelectrochemical platform was sensitive to the increase of the concentration of the antioxidant 3,4,5-trihydroxybenzoic acid in the solution. Under the optimized experimental conditions, the photoelectrochemical method presented a linear response for a 3,4,5-trihydroxybenzoic acid concentration ranging from 0.2 up to 500 µmol L-1. The method was applied to 3,4,5-trihydroxybenzoic acid determination in samples of wines and teas with recoveries between 95.88 and 101.72%. The results obtained suggest that the developed platform is a promising tool for quantifying the 3,4,5-trihydroxybenzoic acid.

Documentos Relacionados

• Bacterial degradation of 3,4,5-trimethoxycinnamic acid with production of methanol.
• Bacterial degradation of 3,4,5-trimethoxyphenylacetic and 3-ketoglutaric acids.
• 2,4,6-Trihydroxybenzoic Acid in the Treatment of Rheumatic Fever
• Cretaceous carbonatites of the southeastern Brazilian Platform: a review
• The MTT [3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide] Assay Is a Fast and Reliable Method for Colorimetric Determination of Fungal Cell Densities