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Agriculture, Vol. 24 No. 1, 2018.

Original scientific paper

https://doi.org/10.18047/poljo.24.1.2

Effects of early leaf removal on volatile compounds concentrations in Cabernet Sauvignon wines from the Ilok vineyards

Mato Drenjančević ; Josip Juraj Strossmayer University of Osijek, Faculty of Agriculture in Osijek, Osijek, Croatia
Vesna Rastija orcid id orcid.org/0000-0001-9542-4022 ; Josip Juraj Strossmayer University of Osijek, Faculty of Agriculture in Osijek, Osijek, Croatia
Vladimir Jukić orcid id orcid.org/0000-0003-3609-3088 ; Josip Juraj Strossmayer University of Osijek, Faculty of Agriculture in Osijek, Osijek, Croatia
Krunoslav Zmaić ; Josip Juraj Strossmayer University of Osijek, Faculty of Agriculture in Osijek, Osijek, Croatia
Toni Kujundžić orcid id orcid.org/0000-0001-9354-8064 ; Josip Juraj Strossmayer University of Osijek, Faculty of Agriculture in Osijek, Osijek, Croatia
Andrijana Rebekić ; Josip Juraj Strossmayer University of Osijek, Faculty of Agriculture in Osijek, Osijek, Croatia
Florian Schwander orcid id orcid.org/0000-0002-0790-6118 ; Julius Kühn-Institut, Federal Research Centre of Cultivated Plants, Institute for Grapevine Breeding 8 Geilweilerhof, 76833 Siebeldingen, Germany

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Abstract

The aim of this two year study was to evaluate effects of basal leaf removal before blooming on volatile composition of Cabernet Sauvignon wines in the Ilok vineyards (eastern Croatia). During two consecutive vintages (2013, 2014), two different treatments of basal leaf removal were applied: removal of 3 and 6 leaves, and control without leaf removal. Volatile compounds of resulting wines were identified and quantified by gas chromatography coupled with mass spectrometry. Organic acids and higher alcohols remained unaffected by treatments of early defoliation wine, except acetic acid and 2-methyl-6-hepten-1-ol. Early leaf removal was affected on six esters concentration only in the 2014 with different outcome. For compounds unaffected by defoliation, vintage was statistically significant source of variability, as the results of multivariate analysis have confirmed. Defoliation treatments in Cabernet Sauvignon wines from eastern continental part of Croatia should be adjusted to the weather condition in growing season.

Keywords

leaf removal; wine; volatile compounds; gas chromatography

Hrčak ID:

201017

URI

https://hrcak.srce.hr/201017

Publication date:

1.6.2018.

Article data in other languages: croatian

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