Influence of manual and mechanical grape harvest on Merlot wine composition

Suélen Braga de Andrade Kaltbach, Pedro Kaltbach*, Cristina Gonçalves Santos, Wellynthon Cunha, Marcelo Giacomini, Fabrício Domingues, Marcelo Malgarim, Flávio Gilberto Herter, Vagner Brasil Costa, José António Couto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Effects of mechanical and manual grape harvest on the composition of Merlot musts and wines produced in the Campanha Gaúcha region (Rio Grande do Sul, Brazil) were investigated. Must analyses comprised several basic physicochemical parameters. Wine analyses comprised a screening of phenolics, volatiles, elements, and several physicochemical parameters. In total, 100 variables were investigated. Wines elaborated with grapes from mechanical and manual harvesting were very similar; only 6 parameters showed statistically significant differences, although of low magnitude. These results indicate that - for Campanha Gaúcha's Merlot wines: mechanical grape harvesting itself does not negatively affect wine composition; moreover, grapes harvested manually and mechanically result in almost identical wines.
Original languageEnglish
Article number104548
Number of pages8
JournalJournal of Food Composition and Analysis
Publication statusPublished - Jul 2022


  • Elemental profile
  • Phenolic composition
  • Volatile composition
  • Wine quality


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