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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Riesling"”.
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Effect of canopy manipulation on rot incidence and rot metabolites of White Riesling (Vitis vinifera L.) grapes
… selected rot metabolites of Virginia grown White Riesling (<i>Vitis vinifera</i> L.) grapes. Due to the relatively high incidence of rot observed in these studies, an evaluation of the effects of rot on the sensory evaluation of juice and on selected aroma components was also undertaken. The …
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Anatomical Developments and the Role of Carbohydrate or Mineral Nutrient Deficiency in Bud Necrosis of 'Riesling' grapevines (Vitis Vinifera L.)
… developments during the onset of BN in 'Riesling' and 'Chardonnay' grapevines were characterized. Examination of ultrathin (1micro m) sections of 'Riesling' buds under a light microscope revealed a zone of compressed cells immediately beneath the primary bud axis within 60 days after …
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Elucidation of odour-potent compounds and sensory profiles of Vidal blanc and Riesling icewines from the Niagara Peninsula : effect of harvest date and crop level
… the Top 15 odour-potent compounds in Vidal and Riesling icewine and table wines; 24 and 23 compounds, respectively. The majority of the compounds had the highest concentrations in the icewines compared to table wines. These compounds were used as the foundation for assessing differences in …
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Using GPS, GIS & remote sensing to understand Niagara Terroir
… The study took place on a 10-ha commercial Riesling vineyard at Thirty Bench Winemakers, in Beamsville (Ontario). Results showed that Soil moisture and leaf'l' were temporally stable and related to berry composition and remotely-sensed data. Remote-sensing, through the calculation of …
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Einfluss unterschiedlicher Bodenpflegesysteme auf den Bodenwasser- und -stickstoffhaushalt, die Wuchsleistung der Rebe und die Most- und Weinqualität
… in Ihringen (Kaiserstuhl) mit der Rebsorte Riesling wurden von 1997 bis 2001 verschiedene Bodenpflegesysteme (ganzflächige Dauerbegrünung, ganzflächige Strohabdeckung, Einsatz eines Flügelschargrubbers, Einsatz einer Fräse) vergleichend hinsichtlich ihres Einflusses auf den Bodenwasser- und …
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The impact of grape clone, yeast strain and protein on sparkling wine quality
… was used to remove grape and yeast proteins. In Riesling sparkling wines, the largest protein concentrations were observed in non-bentonite treated juices while the lowest were observed in the bentonite treatments. The prevalence of foam observed in both bentonite treatments, where grape proteins …
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Geographic classification of wines using Vis-NIR spectroscopy
… wines from Spain and Australia, and fifty Riesling wines from Australia, New Zealand and Europe. Discriminant partial least square regression (DPLS) and linear discriminant analysis (LDA) based on PCA scores were used to perform classification. Over 90% of the Tempranillo wines were …
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The impact of wine closure and packaging type, and light and temperature exposure on the concentration of 3-alkyl-2 -methoxypyrazines and other key constituents of wine
… and TetraPak® cartons) on MPs in MP-emiched Riesling and Cabernet Franc over 18 months. Regardless of packaging, isobutyl-MP was the most altered from bottling. Notably, all MP levels tended to decrease to the greatest extent in TetraPak® cartons (~34% for all MPs) and there was evidence of …
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Computational Canopy Models For Precision Measurement And Adaptive Management Of Grapevine Performance
… compound vital to the organoleptic qualities of Riesling wine. The development and application of new computational methods for managing both the data volume of high-resolution models and the combinatorial complexities of multi-objective vineyard optimization, resulted in: new quantitative …
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Effect of canopy manipulation and fermentation on grape aroma components
… alcohols and a glucopyranoside from White Riesling juice at two different pH values. The percent recovery and the coefficients of variation for each compound was compared with a continuous Freon 11 extraction system. The percent recovery averaged 90% or greater for both systems with the …
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Hedonic Price Analysis of Cool Climate Wines in Selected Regions
… <p> This study examines an emerging varietal, Riesling, in addition to other popular varieties including Chardonnay, Sauvignon Blanc and Pinot Noir. As Riesling thrives in cooler climates, it is becoming an increasingly popular variety among both producers and consumers. </p> <p> Unlike other …
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The enzymatic release of glycosidically-bound terpenes in must
… monoterpenes in Muscat d'Alexandrie and Weisser Riesling grapes. Different commercial enzyme preparations were characterised with respect to their catalytic properties and fractionated by ion exchange chromatography in the most active fractions. Amongst those commercial preparations tested, …
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Vineyard floor management in the Finger Lakes region: physiological and microbial perspectives
… In a three year study conducted in a mature Riesling (Vitis vinifera L.) vineyard, under-vine natural vegetation reduced vine canopy leaf layers and occlusion layers in one of the years compared to glyphosate maintained bare soil but there were no detectable sensory differences among wines …
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Utilisation of Proximal Sensing Technology to Map Variability in Ontario Vineyards
… out on three experimental sites involving two Riesling, two Cabernet franc and two Pinot noir blocks throughout the Niagara Region of Ontario (Canada). A grid of geolocated sentinel vines was chosen for each vineyard block. Data were collected three times during the growing season between fruit …
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Dissecting the genetic, physiological and metabolic mechanisms of grapevine resilience to heat stress
… population obtained from the crossing of ‘Rhine Riesling’ and ‘Cabernet Sauvignon’ was studied in the field with a multidisciplinary approach. The progeny (around 120 genotypes) was evaluated for phenological traits affected by changing temperatures, in particular bud burst, flowering and …
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The role of Stl1p in glycerol accumulation in osmotically stressed icewine yeast Saccharomyces cerevisiae K1 V1116
… Icewine juice on day 4 and day 7 of Vidal and Riesling fermentations respectively, despite encountering greater hyperosmotic stress. Furthermore, energy- dependent glycerol uptake was not detected under either fermentation conditions. Because our findings show that active glycerol uptake was …
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Isolation and Characterisation of Yeasts with Biotechnological Properties
… and two more aromatic varietals (Muscat and Riesling), which included uninoculated treatments as negative controls. The results show that H. uvarum neither increased or reduced the linalool concentrations, except in Riesling which had higher linalool concentration, but still lower compared to …
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PALISSAGE: AN ALTERNATIVE TO MECHANICAL HEDGING IN VITIS VINIFERA VINEYARDS
… laterals. Palissage trials were conducted on “Riesling” and “Cabernet Franc” (Vitis vinifera L.) in commercial vineyards in King Ferry (Finger Lakes region, New York) and Cutchogue (North fork of Long Island, New York), respectively. The trials at the two sites were randomized complete block …
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Methoxypyrazine removal in grape juice: Development of a removal system using odorant and pheromone binding proteins coupled with bentonite fining
… 300 ng/L in buffer pH 4.0, buffer pH 3.5 and Riesling Juice pH 3.5 down to the limit of quantification of the instrument, which is 6ng/L and 2ng/L for IBMP and IPMP, respectively. The results for the plOBP showed that although it could remove some IBMP, it was only approximately 50-70 ng/L …
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Response of Grapes to 2,4-D, Dicamba, and Glyphosate Simulated Drift
… 2,4-D and glyphosate drift were evaluated on `Riesling’ vinifera grape. Fruit yield and quality were measured in 2011 and 2012. In 2011, 2,4-D + glyphosate at 0.0084 kg ae/ha + 0.028 kg ae/ha caused effects on shoot length and visually observable injury symptoms, regardless of application …
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