Effects of Water Stress, Defoliation and Crop Thinning on Vitis vinifera L. cv. Solaris Must and Wine Part II: 1H NMR Metabolomics
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Effects of Water Stress, Defoliation and Crop Thinning on Vitis vinifera L. cv. Solaris Must and Wine Part II : 1H NMR Metabolomics. / Aru, Violetta; Nittnaus, Andreas Paul; Sørensen, Klavs Martin; Toldam-Andersen, Torben Bo; Engelsen, Søren Balling.
In: Metabolites, Vol. 12, No. 7, 672, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Effects of Water Stress, Defoliation and Crop Thinning on Vitis vinifera L. cv. Solaris Must and Wine Part II
T2 - 1H NMR Metabolomics
AU - Aru, Violetta
AU - Nittnaus, Andreas Paul
AU - Sørensen, Klavs Martin
AU - Toldam-Andersen, Torben Bo
AU - Engelsen, Søren Balling
PY - 2022
Y1 - 2022
N2 - Proton nuclear magnetic resonance (1H NMR) metabolomics was employed to investigate the impact of water deficit, defoliation, and crop thinning on the chemical composition of must and wines from the cool-climate white grape variety Solaris. The obtained results show that viticultural practices (defoliation and crop thinning) affected the amino acid and sugar content of Solaris must and thereby the quality of the final wine-mainly in terms of compounds normally related to fruity aroma (i.e., isopentanol), non-sugar sweetness (i.e., proline and glycerol), and alcohol content. The content of tyrosol, a natural phenolic antioxidant with a high bioavailability, was increased in the final wine by a combination of defoliation and crop thinning. The results of the metabolomics analysis performed on the must and wine samples from the water stress experiment showed that short-term water deficit significantly affected the concentration of several flavor-related compounds, including glutamate, butyrate and propanol, of the organic acids lactate and fumarate, and of the phenolic compounds caffeic acid and p-coumaric acid. ANOVA simultaneous component analysis showed that the effect of water deficit accounted for 11% (p < 0.001) and 8% (p < 0.001) of the variability in the metabolite concentrations in must and wines, respectively, while viticultural practices accounted for 38% (p < 0.001) and 30% (p < 0.001) of the metabolite variability in must and wines, respectively.
AB - Proton nuclear magnetic resonance (1H NMR) metabolomics was employed to investigate the impact of water deficit, defoliation, and crop thinning on the chemical composition of must and wines from the cool-climate white grape variety Solaris. The obtained results show that viticultural practices (defoliation and crop thinning) affected the amino acid and sugar content of Solaris must and thereby the quality of the final wine-mainly in terms of compounds normally related to fruity aroma (i.e., isopentanol), non-sugar sweetness (i.e., proline and glycerol), and alcohol content. The content of tyrosol, a natural phenolic antioxidant with a high bioavailability, was increased in the final wine by a combination of defoliation and crop thinning. The results of the metabolomics analysis performed on the must and wine samples from the water stress experiment showed that short-term water deficit significantly affected the concentration of several flavor-related compounds, including glutamate, butyrate and propanol, of the organic acids lactate and fumarate, and of the phenolic compounds caffeic acid and p-coumaric acid. ANOVA simultaneous component analysis showed that the effect of water deficit accounted for 11% (p < 0.001) and 8% (p < 0.001) of the variability in the metabolite concentrations in must and wines, respectively, while viticultural practices accounted for 38% (p < 0.001) and 30% (p < 0.001) of the metabolite variability in must and wines, respectively.
KW - Vitis vinifera
KW - Solaris
KW - grapevine
KW - water deficit
KW - defoliation
KW - crop thinning
KW - H-1 NMR
KW - metabolomics
KW - FT-IR
KW - WineScan
KW - tyrosol
KW - ANTIOXIDANT ACTIVITY
KW - QUANTITATIVE H-1-NMR
KW - CLIMATE-CHANGE
KW - WHITE WINES
KW - GRAPE
KW - CULTIVARS
KW - FERMENTATION
KW - SUNLIGHT
KW - PHENOLS
KW - IMPACT
U2 - 10.3390/metabo12070672
DO - 10.3390/metabo12070672
M3 - Journal article
C2 - 35888796
VL - 12
JO - Metabolites
JF - Metabolites
SN - 2218-1989
IS - 7
M1 - 672
ER -
ID: 316682707