Fast Analysis of Caffeic Acid-Related Molecules in Instant Coffee by Reusable Sonogel-Carbon Electrodes.
Laura PiganiCristina RioliBarbara ZanfrogniniJuan José García-GuzmánJosé Maria Palacios-SantanderLaura María Cubillana-AguileraPublished in: Sensors (Basel, Switzerland) (2022)
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 μM. 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.
Keyphrases
- reduced graphene oxide
- gold nanoparticles
- molecularly imprinted
- label free
- carbon nanotubes
- solid state
- ionic liquid
- loop mediated isothermal amplification
- molecular docking
- protein kinase
- drug induced
- electron transfer
- liquid chromatography
- molecular dynamics simulations
- high resolution
- tandem mass spectrometry
- clinical evaluation