Clonal differences and impact of defoliation on Sauvignon blanc (Vitis vinifera L.) wines: a chemical and sensory investigation

Journal of the Science of Food and Agriculture
Katja ŠukljeAlain Deloire

Abstract

The aim of this study, performed on Sauvignon blanc clones SB11 and SB316, grafted on the same rootstock 101-14 Mgt (Vitis riparia × V. ruperstris) and grown at two adjacent vineyards, was two-fold: (1) to study wine chemical and sensory composition of both clones within an unaltered canopy; and (2) to determine the effect of defoliation (e.g. bunch microclimate) on wine chemical and sensory composition. Orthogonal projection to latent structures discriminate analysis (OPLS-DA) was applied to the concentration profiles of volatile compounds derived from gas chromatography-mass spectrometry data. The loadings directions inferred that 3-isobutyl-2-methoxypyrazine (IBMP) discriminated control treatments (shaded fruit zone) of both clones from defoliation treatments (exposed fruit zone), whereas 3-sulfanyl-hexan-1-ol (3SH), 3-sulfanylhexyl acetate (3SHA), hexanol, hexyl hexanoate and some other esters discriminated defoliated treatments from the controls. The OPLS-DA indicated the importance of IBMP, higher alcohol acetates and phenylethyl esters, for discrimination of clone SB11 from clone SB316 irrespective of the treatment. Defoliation in the fruit zone significantly decreased perceived greenness in clone SB11 and elevated fruit...Continue Reading

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Citations

May 24, 2016·Food Chemistry·Damian MartinAndrew McLachlan
Jul 17, 2018·Journal of the Science of Food and Agriculture·Marijan BubolaKlemen Lisjak
Apr 22, 2016·Journal of the Science of Food and Agriculture·Dragan VujovićRenata Ristić
Mar 31, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yu WangJun Wang
Dec 9, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Christian PhilippReinhard Eder
Jan 25, 2018·Plant Science : an International Journal of Experimental Plant Biology·Marta ArrizabalagaInmaculada Pascual
Jul 3, 2021·Foods·Jean-Christophe BarbeSophie Tempère
Oct 6, 2015·Journal of Agricultural and Food Chemistry·Guillaume AntalickLeigh M Schmidtke
Apr 28, 2018·Journal of Agricultural and Food Chemistry·Liang ChenDavid W Jeffery
Aug 31, 2017·Journal of Agricultural and Food Chemistry·Paolo SivilottiAndreja Vanzo

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