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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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]
Total Authors: 9
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: Food Chemistry; v. 315, JUN 15 2020.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 15/11452-5 - Hybrid materials composed of oxides and metallic nanoparticles for catalytic and photocatalytic applications
Grantee:Eduardo César Melo Barbosa
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)