RT journal article
T1 Fast Analysis of Caffeic Acid-Related Molecules in Instant Coffee by Reusable Sonogel-Carbon Electrodes
A1 Pigani, Laura
A1 Rioli, Cristina
A1 Zanfrognini, Barbara
A1 García Guzmán, Juan José
A1 Palacios Santander, José María
A1 Cubillana Aguilera, Laura
A2 Química Analítica
K1 electrochemical sensor
K1 Sonogel–Carbon electrode
K1 carbon black
K1 coffee
K1 caffeic acid
K1 polyphenols
K1 differential pulse voltammetry
AB Reusable Sonogel-Carbon electrodes containing carbon black (SNGC-CB) have been used for the electrochemical analysis of caffeic acid (CA) in real matrices. Measurements were firstly performed in standard solutions, in which SNGC-CB electrodes allowed the electrochemical determination of CA with high sensitivity and low limit of detection, equal to 0.76 mu M. The presence of CB nanostructures in the formulation led to improved performances with respect to pristine SNGC electrodes. Then, measurements were performed in four instant coffees of different brands. A comparison between the results obtained by electrochemical, chromatographic and spectroscopic methods showed that SBGC-CB electrodes represent a simple and economic tool for the rapid assessment of caffeic acid-related molecules in instant coffees.
PB MDPI
SN 1424-8220
YR 2022
FD 2022-11
LK http://hdl.handle.net/10498/28742
UL http://hdl.handle.net/10498/28742
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026