Effects of Basal Defoliation on Wine Aromas: A Meta-Analysis
AbstractBasal defoliation, as one of the most common viticulture management practices to modify fruit zone microclimates, has been widely applied aiming at improving wine quality. Wine aroma contributes greatly to wine quality, yet the effects of basal defoliation on wine aromas show discrepancies according to previous studies. This study is a meta-analysis performed to dissect the factors related to the influence of basal defoliation on volatile compounds in wine. Timing of basal defoliation plays an important role in the concentration of varietal aromas in wine. Pre-veraison defoliation induces an increase in β-damascenone and linalool as well as a reduction in 3-isobutyl-2-methoxypyrazine (IBMP). The effects of basal defoliation on certain volatile compounds relative to fermentation aromas in wine (1-hexanol, β-phenylethanol, 2-phenylethyl acetate, decanoic acid, and ethyl octanoate) depend on grape maturity. There are also other factors, such as cultivar and climate conditions, that might be responsible for the effect of basal defoliation on wine aromas. The concentrations of isobutanol, isoamyl alcohol, hexanoic acid, and octanoic acid as well as ethyl isobutyrate, ethyl hexanoate, ethyl isovalerate, and ethyl decanoate in wine are not markedly affected by basal defoliation. Due to limited studies included in this meta-analysis, more trials are needed to confirm the current findings. View Full-Text
- Supplementary File 1:
Supplementary (PDF, 1494 KB)
Share & Cite This Article
Wang, Y.; He, L.; Pan, Q.; Duan, C.; Wang, J. Effects of Basal Defoliation on Wine Aromas: A Meta-Analysis. Molecules 2018, 23, 779.
Wang Y, He L, Pan Q, Duan C, Wang J. Effects of Basal Defoliation on Wine Aromas: A Meta-Analysis. Molecules. 2018; 23(4):779.Chicago/Turabian Style
Wang, Yu; He, Lei; Pan, Qiuhong; Duan, Changqing; Wang, Jun. 2018. "Effects of Basal Defoliation on Wine Aromas: A Meta-Analysis." Molecules 23, no. 4: 779.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.