scholarly journals Influence of climatic conditions on the phenolic composition of Vitis vinifera L. cv. Graciano

2012 ◽  
Vol 732 ◽  
pp. 73-77 ◽  
Author(s):  
Raúl Ferrer-Gallego ◽  
José Miguel Hernández-Hierro ◽  
Julián C. Rivas-Gonzalo ◽  
M. Teresa Escribano-Bailón
Keyword(s):  
Vitis Vinifera ◽  
Climatic Conditions ◽  
Vitis Vinifera L ◽  
Phenolic Composition

scholarly journals Impact of Climatic Conditions on the Resveratrol Concentration in Blend of Vitis vinifera L. cvs. Barbera and Croatina Grape Wines

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 401
Author(s):  
Gabriele Rocchetti ◽  
Federico Ferrari ◽  
Marco Trevisan ◽  
Luigi Bavaresco
Keyword(s):  
Vitis Vinifera ◽  
Correlation Coefficients ◽  
Climatic Conditions ◽  
Meteorological Conditions ◽  
Vitis Vinifera L ◽  
Red Wines ◽  
Bioclimatic Indices ◽  
Positive Correlation ◽  
Mean Temperature ◽  
Production Areas

The aim of this work was to investigate the effect of meteorological conditions on resveratrol concentration of red wines produced in Piacenza viticultural region (Italy). In this regard, six representative estates producing Colli Piacentini Gutturnio DOC (a blend of V. vinifera L. cvs. Barbera and Croatina) vintage wines were analysed for trans- and cis-resveratrol over an 8-year period (1998–2005). Grapes were taken from the same vineyard in each estate by using the same enological practices over the entire investigated period. The meteorological conditions corresponding to the production areas were recorded, and bioclimatic indices were calculated as well. Overall, cis-resveratrol concentration was negatively correlated to Huglin index and August mean temperature, whilst positive correlation coefficients were found when considering the Selianinov index and the rainfall of September.

Characterization of phenolic composition in Carignan noir grapes (Vitis vinifera L.) from six wine-growing sites in Maule Valley, Chile

2017 ◽  
Vol 98 (1) ◽  
pp. 274-282 ◽  
Author(s):  
Ana M Martínez-Gil ◽  
Gastón Gutiérrez-Gamboa ◽  
Teresa Garde-Cerdán ◽  
Eva P Pérez-Álvarez ◽  
Yerko Moreno-Simunovic
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Phenolic Composition

Phenolic composition and physicochemical parameters of Carménère, Cabernet Sauvignon, Merlot and Cabernet Franc grape seeds (Vitis vinifera L.) during ripening

LWT ◽  
2012 ◽  
Vol 48 (1) ◽  
pp. 134-141 ◽  
Author(s):  
Elías Obreque-Slier ◽  
Remigio López-Solís ◽  
Lorena Castro-Ulloa ◽  
Cristian Romero-Díaz ◽  
Álvaro Peña-Neira
Keyword(s):  
Vitis Vinifera ◽  
Physicochemical Parameters ◽  
Vitis Vinifera L ◽  
Cabernet Sauvignon ◽  
Phenolic Composition ◽  
Grape Seeds ◽  
Cabernet Franc

scholarly journals Phenolic composition of vine leaves infusions produced from different Portuguese and Spanish Vitis vinifera L. varieties

2019 ◽  
Vol 12 ◽  
pp. 04004
Author(s):  
A.M. Jordão ◽  
J. Sousa ◽  
A.C. Correia ◽  
M.E. Valdés ◽  
F.M. Nunes ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Vitis Vinifera ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Vitis Vinifera L ◽  
Phenolic Composition ◽  
Alternative Source ◽  
Wide Range ◽  
Interesting Alternative

The main object of the present study was to analyze the phenolic composition of vine leaves infusions prepared from 8 different Portuguese (Fernão Pires, Touriga Franca, Tinta Roriz, Encruzado, Touriga Nacional, Rufete, Baga, and Siria) and Spanish (Pardina, Cayetana, Garnacha, Cigüente, Eva, Tempranillo, Macabeo and Verdelho) Vitis vinifera L. varieties. In general, a wide range of phenolic content were obtained from the vine leaves infusions according to the vine variety used. Thus, for total phenolic content the values ranged from 18 to 37 mg/L for the infusions produced from Portuguese varieties, while for Spanish varieties the values ranged from 14 to 37 mg/L. Vine leaves infusions obtained from Touriga Franca and Pardina varieties showed the highest total phenolic content. As a consequence of phenolic composition, chromatic characteristics (L*, a* and b*) of vine leaves infusions were also analyzed. Finally, it was also detected different individual phenolic compounds, such as, coutaric acid, trans-caftaric acid, quercetin-3-O-glucoside, rutin and 3 different anthocyanins from the different vine leaves infusions. All of the results obtained in this work show that vine leaves infusion may be an interesting alternative source of phenolic compounds for human diet.

Effects of postveraison water regime on the phenolic composition of grapes and wines of cv. Agiorgitiko (Vitis vinifera L.)

OENO One ◽  
2013 ◽  
Vol 47 (2) ◽  
pp. 115 ◽  
Author(s):  
Stefanos Koundouras ◽  
Ioannis Kanakis ◽  
Efrosyni Drossou ◽  
Stamatina Kallithraka ◽  
Yorgos Kotseridis
Keyword(s):  
Vitis Vinifera ◽  
Water Deficit ◽  
Water Regime ◽  
Growth Parameters ◽  
Significant Loss ◽  
Climatic Conditions ◽  
Anthocyanin Content ◽  
Phenolic Composition ◽  
Stem Water Potential ◽  
Irrigation Amount

<p style="text-align: justify;"><strong>Aims</strong>: Vine water deficit is widely accepted as a powerful means to control grape and wine attributes. However, quality improvement is often achieved at the expense of a reduction in yield, especially when water deficit conditions are applied during the preveraison period. The aim of the present work was to test an irrigation regime based on manipulating water availability from veraison to harvest, as a means to control berry and wine composition with minimum effect on reproductive growth parameters.</p><p style="text-align: justify;"><strong>Methods and results</strong>: A field trial was conducted during two consecutive years (2007-2008) in Nemea, Southern Greece. Three irrigation treatments were applied on seven-year-old, vertical shoot positioned and spur pruned Agiorgitiko vines (<em>Vitis vinifera</em> L.), from veraison through harvest : irrigation at 70 % of crop evapotranspiration (ET<sub>c</sub>) (I70), irrigation at 30 % of ET<sub>c</sub> (I30) and non irrigated (NI). Irrigation amount produced significant differences in postveraison midday stem water potential pattern, especially during the drier year 2008. Yield was increased by irrigation in 2008, whereas berry growth was unaffected in both seasons. Berries of NI vines achieved higher total skin anthocyanin content in 2007, although individual anthocyanin levels were not affected by water regime. Irrigation effect on skin tannins was inconsistent but seed tannins were higher in I70 vines, with increased levels of catechin and epicatechin monomers. Among wine attributes, tannin concentration, but not anthocyanin, was mostly responsive to water deficit-induced changes in berry phenolic composition. The wines made from I70 grapes had a higher tannin content than those made from NI grapes.</p><p style="text-align: justify;"><strong>Conclusions</strong>: The results presented show that postveraison water regime had a significant effect on skin anthocyanins and, more markedly, on seed tannins, without altering berry growth parameters. Especially for seed tannins, this effect appears to predominate over variations in climatic conditions between years.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: This trial suggests that Agiorgitiko vines grown on the loamy soils of Nemea perform better under non irrigated conditions during the postveraison period since rainfed vines had improved phenolic composition (higher colour with lower contribution of seed tannins) without significant loss in productivity.</p>

Effects of cluster thinning on anthocyanin extractability and chromatic parameters of Syrah and Tempranillo grapes and wines

OENO One ◽  
2009 ◽  
Vol 43 (1) ◽  
pp. 45 ◽  
Author(s):  
Rocío Gil-Muñoz ◽  
Rosario Vila-López ◽  
José Ignacio Fernández-Fernández ◽  
Adrián Martínez-Cutillas
Keyword(s):  
Vitis Vinifera ◽  
Alcoholic Fermentation ◽  
Climatic Conditions ◽  
Vitis Vinifera L ◽  
Grape Quality ◽  
Cluster Thinning ◽  
Commercial Vineyard ◽  
Better Than

<p style="text-align: justify;"><strong>Aims</strong>: The effects of cluster thinning on yield and extractability parameters of Syrah and Tempranillo grapes, as well as the chromatic characteristics of the wines obtained in three consecutive seasons.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Grapes of Vitis vinifera L. var. Tempranillo and Syrah were harvested from a commercial vineyard in Jumilla. Two treatments were evaluated: (a) cluster thinned, where in every shoot all the clusters, except the basal one, were removed just before veraison; (b) unthinned control. Yield, physicochemical and extractability parameters were studied in the grapes. Vinifications were made from these grapes, and chromatic parameters were studied at the end of alcoholic fermentation. Results showed that cluster-thinned vines performed better than control vines during the three consecutive years of the experiment, although the best results were obtained in the driest year (2005). The Syrah variety always provided better results than the Tempranillo variety. The cluster-thinning treatment also influenced the chromatic characteristics of the wines obtained.</p><p style="text-align: justify;"><strong>Conclusions</strong>: The results showed that thinning successfully reduced yield and produced an earlier harvest in the two varieties studied. The grape quality improved and, in general, wines made from cluster-thinned vines of both Syrah and Tempranillo had significantly better chromatic characteristics than control wines.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: This study demonstrate that the practice of cluster-thinning may be recommended depending on several factors, as the varieties and the climatic conditions play also a role in the extractability parameters of grapes, and therefore its use cannot be generalized.</p>

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