Busca avançada
Ano de início
Entree
Conteúdo relacionado
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Chemometric-assisted construction of a biosensing device to measure chlorogenic acid content in brewed coffee beverages to discriminate quality

Texto completo
Autor(es):
Salamanca-Neto, Carlos A. R. [1] ; Marcheafave, Gustavo G. [1] ; Scremin, Jessica [1] ; Barbosa, Eduardo C. M. [2] ; Camargo, Pedro H. C. [2] ; Dekker, Robert F. H. [3] ; Scarminio, Ieda S. [1] ; Barbosa-Dekker, Aneli M. [1] ; Sartori, Elen R. [1]
Número total de Autores: 9
Afiliação do(s) autor(es):
[1] Univ Estadual Londrina, Ctr Ciencias Exatas, Dept Quim, BR-86057970 Londrina, PR - Brazil
[2] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508000 Sao Paulo, SP - Brazil
[3] Univ Tecnol Fed Parana, Programa Posgrad Engn Ambiental, Campus Londrina, BR-86036370 Londrina, PR - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Food Chemistry; v. 315, JUN 15 2020.
Citações Web of Science: 0
Resumo

In this work we propose the use of statistical mixture design in the construction of a biosensor device based on graphite oxide, platinum nanoparticles and biomaterials obtained from Botryosphaeria rhodina MAMB-05. The biosensor was characterized by electrochemical impedance spectroscopy. Under optimized experimental parameters by factorial design, the biosensor was applied to the voltammetric determination of chlorogenic acid (CGA) measured as 5-O-caffeoylquinic acid (5-CQA). The biosensor response was linear (R-2 = 0.998) for 5-CQA in the concentration range 0.56-7.3 mu mol L-1, with limit of detection and quantification of 0.18 and 0.59 mu mol L-1, respectively. The new biosensing device was applied to quality control analysis based upon the determination of CGA content in specialty and traditional coffee beverages. The results indicated that specialty coffee had a significantly higher content of CGA. Principal component analysis of the voltammetric fingerprint of brewed coffees revealed that the laccase-based biosensor can be used for their discrimination. (AU)

Processo FAPESP: 15/11452-5 - Materiais híbridos compostos por óxidos e nanopartículas metálicas para aplicações catalíticas e fotocatalíticas
Beneficiário:Eduardo César Melo Barbosa
Modalidade de apoio: Bolsas no Brasil - Doutorado Direto