Search results for "wine ."
showing 10 items of 266 documents
Managerial suggestions to sustainable market choices: A business profitability assessment on the adoption of voluntary certification in the wine indu…
2016
Quality and environmental management systems have become prominent business strategic tools to address social and environmental problems. Several voluntary certification schemes have been developed in various economic sectors, as well as in the food one. Nevertheless, it remains unclear if a positive business profitability exists as a consequence of their adoption. Aims of this work was to compare two specific groups of firms operating in the wine industry, certified and non certified ones, in order to verify the existence of a positive impact directly belonging to the adoption of environmental and food safety proactive approaches. To this scope, a sample of 173 cellars located in the South…
Sensory-active compounds influencing wine experts' and consumers' perception of red wine intrinsic quality
2015
© 2014 Elsevier Ltd. There is a lack of studies focusing on the chemical compounds involved in quality perception. The present work combines both sensory and chemical approaches with the final goal of evaluating the sensory-active compounds influencing wine experts' and consumers' perception of red wine quality. Perceived quality was categorised by 108 consumers and 119 experts according to four levels going from very low to very high quality. In parallel, samples were described by a descriptive trained panel and volatile and non-volatile chemicals with known sensory activity were quantified. Wines with higher concentrations of eugenol, E- and Z-whiskylactones and 4-ethylphenol (discussed i…
Sch 9p kinase and the Gcn4p transcription factor regulate glycerol production during winemaking
2017
Grape juice fermentation is a harsh environment with many stressful conditions, and Saccharomyces cerevisiae adapts its metabolism in response to those environmental challenges. Many nutrient-sensing pathways control this feature. The Tor/Sch9p pathway promotes growth and protein synthesis when nutrients are plenty, while the transcription factor Gcn4p is required for the activation of amino acid biosynthetic pathways. We previously showed that Sch9p impact on longevity depends on the nitrogen/carbon ratio. When nitrogen is limiting, SCH9 deletion shortens chronological life span, which is the case under winemaking conditions. Its deletion also increases glycerol during fermentation, so the…
Molecular Characterization of a Chromosomal Rearrangement Involved in the Adaptive Evolution of Yeast Strains
2002
Wine yeast strains show a high level of chromosome length polymorphism. This polymorphism is mainly generated by illegitimate recombination mediated by Ty transposons or subtelomeric repeated sequences. We have found, however, that the SSU1-R allele, which confers sulfite resistance to yeast cells, is the product of a reciprocal translocation between chromosomes VIII and XVI due to unequal crossing-over mediated by microhomology between very short sequences on the 5' upstream regions of the SSU1 and ECM34 genes. We also show that this translocation is only present in wine yeast strains, suggesting that the use for millennia of sulfite as a preservative in wine production could have favored …
Aneuploidy and Ethanol Tolerance in
2018
Response to environmental stresses is a key factor for microbial organism growth. One of the major stresses for yeasts in fermentative environments is ethanol. Saccharomyces cerevisiae is the most tolerant species in its genus, but intraspecific ethanol-tolerance variation exists. Although, much effort has been done in the last years to discover evolutionary paths to improve ethanol tolerance, this phenotype is still hardly understood. Here, we selected five strains with different ethanol tolerances, and used comparative genomics to determine the main factors that can explain these phenotypic differences. Surprisingly, the main genomic feature, shared only by the highest ethanol-tolerant st…
Food and religion in sicily—a new green tourist destination by an ancient route from the past
2021
The Francigena Way (Via Francigena) is a long international itinerary that was awarded recognition as a Culture Route of the Council of Europe. It starts in Canterbury (UK), touches 13 European regions and ends in Rome. An ancient track of this route is in Sicily (Southern Italy), and its name is Magna Via Francigena (Great Francigena Way). This track is a pilgrimage route that connects two ancient port cities, Palermo and Agrigento, passing through internal rural territories that now deal with the exodus of population from rural to urban areas. The route passes through the Sicilian territory named “Upper-Belìce corleonese”, a rural area around the city of Corleone (a little village known w…
Skills for competitiveness: an empirical analysis of the educational provision for oenologists offered by Italian universities
2022
Purpose: Whilst operating in the context of a high-income economy, the Italian labour market is affected by the considerable challenges of vertical mismatch, skill gaps and skill shortages. In such a context, the aim of this empirical study is to explore current university provision regarding the formal qualification of the oenologist, in order to assess its alignment with the professionalism demands from the wine sector. Design/Methodology/Approach: The following was deployed to analyse university provision with a mixed method approach including social network analysis, cluster analysis and desk analyses based on descriptive statistics. Findings: The comparative analysis outlined in the re…
De novo production of six key grape aroma monoterpenes by a geraniol synthase-engineered S. cerevisiae wine strain
2015
[Background] Monoterpenes are important contributors to grape and wine aroma. Moreover, certain monoterpenes have been shown to display health benefits with antimicrobial, anti-inflammatory, anticancer or hypotensive properties amongst others. The aim of this study was to construct self-aromatizing wine yeasts to overproduce de novo these plant metabolites in wines.
The Antarctic yeast Candida sake: Understanding cold metabolism impact on wine
2017
Current winemaking trends include low-temperature fermentations and using non-Saccharomyces yeasts as the most promising tools to produce lower alcohol and increased aromatic complexity wines. Here we explored the oenological attributes of a C. sake strain, H14Cs, isolated in the sub-Antarctic region. As expected, the cold sea water yeast strain showed greater cold growth, Na+-toxicity resistance and freeze tolerance than the S. cerevisiae QA23 strain, which we used as a commercial wine yeast control. C. sake H14Cs was found to be more sensitive to ethanol. The fermentation trials of low-sugar content must demonstrated that C. sake H14Cs allowed the cold-induced lag phase of growth to be el…
THE MAIN EFFECTS OF GREEN HARVESTING ON THE SICILIAN WINE COOPERATIVES
2013
In Sicily in the 2010-2012 period green harvesting is the most successful of the 9 measures provided by the Italian National Support Programme (NSP) for wine. Its main goal is to contribute to restoring the balance between supply and demand by destructing or removing grape bunches in their immature stage in order to prevent market crises. The paper firstly presents the main results of a "three-year" application of Green Harvesting measure to the Sicilian wine sector. Firstly the implementation of Green Harvesting Measure was examined at EU, national and regional level through the analysis of the available statistical data; at a later stage its effects on the Sicilian wine sector were invest…