Geographical characterization of South America wines based on their phenolic and melatonin composition: An exploratory analysis

CARNEIRO, CANDICE N.; SILVA, MARIA F.; CARNEIRO, CANDICE N.; SILVA, MARIA F.; GOMEZ, FEDERICO J.V.; AZCARATE, SILVANA M.; GOMEZ, FEDERICO J.V.; AZCARATE, SILVANA M.; SPISSO, ADRIAN; DIAS, FABIO DE S.; SPISSO, ADRIAN; DIAS, FABIO DE S.

MICROCHEMICAL JOURNAL

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2020 vol. 158

0026-265X

This study aimed to determine ellagic acid, vanillic acid, syringic acid, quercetin, and melatonin in samples of wines from Brazil, the São Francisco Valley region, and Argentine region (Valle de Uco, Luján de Cuyo, Mendoza and Neuquén). The phenolic compounds and melatonin were determined by UHPLC MS/MS and HPLC. Quercetin was the compound found in major quantities in Argentine wines. In some bottles of Brazilian wines, vanillic acid and ellagic acid were found in higher bottles compared to Argentine wines. As for syringic acid, as selected filters in Brazilian wines, they were inferior in Argentine wines samples. PCA and HCA were carried out to group the data obtained according to the region of origin of the wines.