Pre-fermentation approaches to producing lower alcohol wines from Cabernet Sauvignon and Shiraz: Implications for wine quality based on chemical and sensory analysis

2020 ◽  
Vol 309 ◽  
pp. 125698 ◽  
Author(s):  
Olaf J. Schelezki ◽  
Guillaume Antalick ◽  
Katja Šuklje ◽  
David W. Jeffery
Keyword(s):  
Sensory Analysis ◽  
Cabernet Sauvignon ◽  
Wine Quality ◽  
Lower Alcohol

scholarly journals The significance of scion × rootstock interactions

OENO One ◽  
2019 ◽  
Vol 53 (2) ◽  
Author(s):  
Peter Clingeleffer ◽  
Norma Morales ◽  
Hilary Davis ◽  
Harley Smith
Keyword(s):  
Management Practices ◽  
Block Design ◽  
Growth Characteristics ◽  
Soluble Solids ◽  
High Yield ◽  
Cabernet Sauvignon ◽  
Wine Quality ◽  
Fruit Composition ◽  
Berry Weight ◽  
Index Value

Aims: Rootstocks provide protection against soil-borne pests and are a powerful tool to manipulate growth, fruit composition and wine-quality attributes. The present study aimed to assess the consistency of rootstock effects on the growth and fruit composition of scion varieties and identify scion × rootstock interactions.Methods and results: Vine performance and fruit composition of hot-climate, drip-irrigated, spur-pruned Chardonnay, Cabernet Sauvignon and Shiraz, grafted on seven rootstocks, was assessed over five seasons from 2013 to 2017. Rootstocks included Ramsey, 1103 Paulsen and 140 Ruggeri and four promising selections from the CSIRO rootstock development programme. Vines were trained as quadrilateral cordons on a two-wire vertical trellis of height 1.8 m and 3.0 m row × 1.8 m vine spacing, and irrigated with 5.5–6.0 ML/ha of water each season. The study was conducted with mature vines, established in 2006, as a randomised block design with five replicates. There were significant effects of both variety and rootstock on yield, number of bunches, bunch weight, berry weight (scion only), berries per bunch, pruning weight and the Ravaz Index (yield/pruning weight). Despite identical management practices, there were large differences between scion varieties in key growth characteristics across rootstocks. Chardonnay produced a high yield (mean 25.2 kg/vine) with low pruning weight (2.3 kg/vine) and a high mean Ravaz Index value of 12.1. Shiraz had the highest yield (27.4 kg/vine) with high pruning weight (5.1 kg/vine) and a Ravaz Index of 6.3. Cabernet Sauvignon had the lowest yield (15.9 kg/vine) and highest pruning weight (6.6 kg/vine) and a very low Ravaz Index value of 3.0. Effects of rootstock on growth characteristics were smaller than the effects of variety, with mean yields ranging from 19.5 to 25.9 kg/vine, pruning weights ranging from 3.24 to 6.13 kg/vine and mean Ravaz Index values ranging from 5.54 to 8.63. Each variety was harvested when the mean total soluble solids reached 25.0 °Brix. Significant effects of variety and rootstock on fruit composition, included pH, titratable acidity (scion only), malate, tartrate (scion only), yeast assimilable nitrogen (YAN); and for the red varieties, total anthocyanins (scion only) and phenolic substances (scion only). Significant interactions between scion variety and rootstocks were found for yield, number of bunches, berry weight, pruning weight and Ravaz Index. The effect of rootstock on bunch weight and berries per bunch was consistent across scions. Significant scion × rootstock interactions were also found for pH and YAN. For each variety, significant effects of rootstock on fruit composition were linked to growth characteristics. However, these relationships, based on correlation analyses, varied for each scion.Conclusions: The study has shown that growth characteristics and fruit composition of the major varieties was not consistent across seven rootstock genotypes, as significant scion × rootstock interactions were determined. Hence, different rootstocks may be required for each variety to optimise scion performance and fruit composition. The study has also shown that the new CSIRO rootstock selections, covering a range of vigour classifications, may be useful alternatives to those currently in use by industry.Significance and impact of the study: The study has shown that the performance of scion varieties, and to a lesser degree the fruit composition, is dependent on rootstock choice. The inherent vigour of the scion variety must be considered in rootstock selection. Furthermore, individual scion/rootstock combinations may require specific irrigation, pruning or canopy management to achieve vine balance and optimise fruit and wine composition.

scholarly journals Comparison of Aroma Compounds in Cabernet Sauvignon Red Wines from Five Growing Regions in Xinjiang in China

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Lijun Nan ◽  
Liyuan Liu ◽  
Yashan Li ◽  
Jing Huang ◽  
Yanjun Wang ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Volatile Compound ◽  
Decisive Role ◽  
Aroma Compounds ◽  
Cabernet Sauvignon ◽  
Red Wines ◽  
Wine Quality ◽  
Ili River Valley ◽  
The Right ◽  
Total Concentrations

A total of 55 volatiles including esters (29, 52.73%), alcohols (10, 18.18%), acids (3, 5.45%), alkanes (8, 14.55%), and other components (5, 9.09%) were evaluated in five regions. Total concentrations were 0.05–222.23 mg/L, which covered the highest esters (222.23 mg/L) and alcohols (120.65 mg/L) in Turpan, acid (0.53 mg/L) in Shihezi, and alkanes (1.43 mg/L) and others (3.10 mg/L) in the Ili River valley. It proved that numbers and concentrations of volatile compounds, including common ingredients of variety, were closely linked to ecological characteristics of a region. Esters and alcohols were the major ingredients in Xinjiang Cabernet Sauvignon wine. Additionally, appellation could affect performance of concentration, ODE, and OTH, especially for the same flavor substance by fermentation, aging, and even formation and transformation in wines. Therefore, three conditions for formation of flavors were successively appellations, metabolism and fermentation, and and appropriate altering according to technology and their decisive role in wine quality. Each volatile compound had its own flavor, the combination of which complicated the flavor. The unique materials in the region were grounded for the development of products with corresponding flavors by producing substrate for fermentation. When choosing a wine you enjoy, the right appellation should be considered first.

Effects of Soil and Climatic Conditions on Grape Ripening and Wine Quality of Cabernet Sauvignon

2010 ◽  
Vol 21 (1) ◽  
pp. 1-17 ◽  
Author(s):  
Josep Miquel Ubalde ◽  
Xavier Sort ◽  
Alicia Zayas ◽  
Rosa Maria Poch
Keyword(s):  
Climatic Conditions ◽  
Cabernet Sauvignon ◽  
Wine Quality

Crop levels and pruning timing affect must and wine quality of cabernet sauvignon wine grape

2018 ◽  
Vol 75 (3) ◽  
pp. 384
Author(s):  
A.K. Sharma ◽  
R.G. Somkuwar ◽  
Kaushik Banerjee ◽  
Satisha Jogaiah ◽  
Narayan Kamble
Keyword(s):  
Cabernet Sauvignon ◽  
Wine Grape ◽  
Wine Quality

Soils, rootstocks and grapevine varieties in prestigious Bordeaux vineyards and their impact on yield and quality

OENO One ◽  
2010 ◽  
Vol 44 (3) ◽  
pp. 127 ◽  
Author(s):  
Vincent Renouf ◽  
Olivier Trégoat ◽  
Jean-Philippe Roby ◽  
Cornelis Van Leeuwen
Keyword(s):  
Soil Type ◽  
Quality Index ◽  
Cabernet Sauvignon ◽  
Wine Quality ◽  
Quality Performance ◽  
Cabernet Franc ◽  
Grapevine Variety ◽  
Yield And Quality ◽  
Gravelly Soil ◽  
The Impact

<p style="text-align: justify;"><strong>Aims</strong>: To study the impact of soil-type, grapevine variety and rootstock on grape yield and wine quality in prestigious estates located in the Bordeaux area (France).</p><p style="text-align: justify;"><strong>Methods and results</strong>: High-resolution soil maps (scale: 1/3000<sup>th</sup>) were created for seven prestigious red wine-producing estates in Bordeaux, covering a total area of approximately 400 ha. Soil-type, rootstocks and grapevine varieties were recorded for each vineyard block. A Quality Index was created by considering the destination of the grapes produced in each block, whether they were integrated in the first, the second or the third quality wine produced by the estate. Quality Index was averaged over five vintages. Yield was also measured for each vineyard block and averaged over five vintages. PEYROSOL (gravelly soil) was the most frequent soiltype in these estates (45% of the total mapped area). Soils with temporary waterlogging (REDOXISOL), heavy clay soils (PLANOSOL) and sandygravelly soils (BRUNISOL) covered around 10% of the mapped area each. Highest quality was obtained on PLANOSOLS, ARENOSOLS (sandy soils), BRUNISOLS and PEYROSOLS. Quality was low on COLLUVIOSOLS (deep soils on colluvium), LUVISOLS (leached acidic soils) and REDUCTISOLS (soils with permanent waterlogging). Cabernet- Sauvignon was the dominant grapevine variety (59% of the mapped area), followed by Merlot (32%), Cabernet franc (8%) and Petit Verdot (1%). On average, the Quality Index was higher for Cabernet-Sauvignon and Merlot compared with Cabernet franc and Petit Verdot. Riparia Gloire de Montpellier (RGM) was by far the most used rootstock. It covered 45% of the mapped area. Including 3309C and 420A, these three rootstocks covered 75% of the total acreage planted in these estates. Highest quality wine was produced with 420A, RGM, 3309C and Gravesac. Highest yields were obtained with 161-49C, 101-14 MG, RGM, SO4 and 420A.</p><p style="text-align: justify;"><strong>Conclusions</strong>: Soil, grapevine variety and rootstock have a major impact on yield and wine quality in prestigious Bordeaux wine producing estates.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: Assessment of a Quality Index by soil-type, cultivar and rootstock can indicate which combinations of soiltype, cultivar and rootstock would best optimise quality performance in Bordeaux vineyards.</p>

scholarly journals Pyrazine contents in four red grape varietes cultivated in warm climate

OENO One ◽  
2006 ◽  
Vol 40 (4) ◽  
pp. 203
Author(s):  
Raquel Romero ◽  
Juan Luis Chacón ◽  
Esteban García ◽  
Jesús Martínez
Keyword(s):  
Sensory Analysis ◽  
Cabernet Sauvignon ◽  
Warm Climate ◽  
Perception Threshold ◽  
Green Pepper ◽  
La Mancha ◽  
Red Grape ◽  
Grape Varieties

<p style="text-align: justify;">We analysed 2-methoxy-3-ethylpyrazine and 2-methoxy-3-isobutylpyrazine content in 4 grape varieties cultivated in Castilla-La Mancha. A sensory analysis of the wines obtained from these grapes was also performed. The results revealed the presence of the two methoxypyrazines studied in all four varieties, in concentrations lower than those published for these varieties in regions with cooler climates. Significant differences were observed in 2-methoxy-3-isobutylpyrazine content between the different varieties: Cabernet-Sauvignon&gt;Merlot&gt;Syrah&gt;Cencibel. The correlation between 2- methoxy-3-isobutylpyrazine content and the « green pepper » descriptor suggests a perception threshold at 3 ng/L in young wines.</p>

scholarly journals Rootstock-scion interaction: 4. Effect on the sensory characteristics of Cabernet Sauvignon wine

2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Alberto Miele ◽  
Luiz Antenor Rizzon
Keyword(s):  
Genetic Diversity ◽  
Experimental Design ◽  
Sensory Analysis ◽  
Yield Components ◽  
Sensory Characteristics ◽  
Cabernet Sauvignon ◽  
Physicochemical Composition ◽  
Tasting Panel ◽  
Made In

Abstract It is known that rootstock can induce changes on grapevine yield components and on the physicochemical composition of musts and wines. However, its effect on the sensory characteristics of wines has been scarcely studied. For this reason, an experiment was conducted to determine the effect of 15 rootstocks on the sensory characteristics of Cabernet Sauvignon wine, whose grapevines were grafted on Rupestris du Lot, 101-14 Mgt, 3309 C, 420A Mgt, 5BB K, 161-49 C, SO4, Solferino, 1103 P, 99 R, 110 R, Gravesac, Fercal, Dogridge and Isabel, which feature some genetic diversity altogether. The experimental design was in randomized blocks, with 15 treatments, three replicates, 10 vines per plot. Mature grapes were harvested, and wines were made in 20-L glass recipients. When alcoholic and malolactic fermentations were finished, the wines were bottled and stored at 18°C. Sensory analysis was performed in the next year, following international procedures. The tasting panel was formed by 12 experienced enologists, who evaluated the wines in individual cells separated by opaque glass. They were served monadically and the perception of each taster was recorded in 9-cm unstructured scale sheets. Twenty-two variables were evaluated, which were related to the visual, olfactory and taste aspects. The results show that the tasting panel was not able to detect significant differences (p> 0.05) of rootstocks in any variable related to the sensory characteristics of Cabernet Sauvignon wine.

scholarly journals In-Season Interactions between Vine Vigor, Water Status and Wine Quality in Terrain-Based Management-Zones in a ‘Cabernet Sauvignon’ Vineyard

2021 ◽  
Vol 13 (9) ◽  
pp. 1636
Author(s):  
Idan Bahat ◽  
Yishai Netzer ◽  
José M. Grünzweig ◽  
Victor Alchanatis ◽  
Aviva Peeters ◽  
...  
Keyword(s):  
Water Stress ◽  
Water Deficit ◽  
Water Status ◽  
Canopy Cover ◽  
Remotely Sensed ◽  
Water Deficit Stress ◽  
Cabernet Sauvignon ◽  
Crop Water Stress Index ◽  
Wine Quality ◽  
Management Zones

Wine quality is the final outcome of the interactions within a vineyard between meteorological conditions, terrain and soil properties, plant physiology and numerous viticultural decisions, all of which are commonly summarized as the terroir effect. Associations between wine quality and a single soil or topographic factor are usually weak, but little information is available on the effect of terrain (elevation, aspect and slope) as a compound micro-terroir factor. We used the topographic wetness index (TWI) as a steady-state hydrologic and integrative measure to delineate management zones (MZs) within a vineyard and to study the interactions between vine vigor, water status and grape and wine quality. The study was conducted in a commercial 2.5-ha Vitis vinifera ‘Cabernet Sauvignon’ vineyard in Israel. Based on the TWI, the vineyard was divided into three MZs located along an elongate wadi that crosses the vineyard and bears water only in the rainy winter season. MZ1 was the most distant from the wadi and had low TWI values, MZ3 was closest to the wadi and had high TWI values. Remotely sensed crop water stress index (CWSI) was measured simultaneously with canopy cover (as determined by normalized difference vegetation index; NDVI) and with field measurements of midday stem water potential (Ψstem) and leaf area index (LAI) on several days during the growing seasons of 2017 and 2018. Vines in MZ1 had narrow trunk diameter and low LAI and canopy cover on most measurement days compared to the other two MZs. MZ1 vines also exhibited the highest water stress (highest CWSI and lowest Ψstem), lowest yield and highest wine quality. MZ3 vines showed higher LAI on most measurement days, lowest water deficit stress (Ψstem) during phenological stage I, highest yield and lowest wine quality. Yet, in stage III, MZ3 vines exhibited a similar water deficit stress (CWSI and Ψstem) as MZ2, suggesting that the relatively high vigor in MZ3 vines resulted in higher water deficit stress than expected towards the end of the season, possibly because of high water consumption over the course of the season. TWI and its classification into three MZs served as a reliable predictor for most of the attributes in the vineyard and for their dynamics within the season, and, thus, can be used as a key factor in delineation of MZs for irrigation. Yet, in-season remotely sensed monitoring is required to follow the vine dynamics to improve precision irrigation decisions.

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