Monitoring the Phenolic Ripening of Red Grapes Using a Multisensor System Based on Metal-Oxide Nanoparticles.

ABSTRACT: The maturity of grapes is usually monitored by means of the sugar concentration. However, the assessment of other parameters such as the phenolic content is also important because the phenolic maturity has an important impact on the organoleptic characteristics of wines. In this work, voltammetric sensors able to detect phenols in red grapes have been developed. They are based on metal oxide nanoparticles (CeO₂, NiO, and TiO₂,) whose excellent electrocatalytic properties toward phenols allows obtaining sensors with detection limits in the range of 10^-8 M and coefficients of variation lower than 7%. An electronic tongue constructed using a combination of the nanoparticle-based sensors is capable to monitor the phenolic maturity of red grapes from véraison to

SUBMITTER: Garcia-Hernandez C 

PROVIDER: S-EPMC5928143 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature