Wine StudiesPub Date : 2016-05-30DOI: 10.4081/WS.2016.5795
P. M. Izquierdo-Cañas, E. García-Romero, A. Mena-Morales, S. Gómez-Alonso
{"title":"Effects of malolactic fermentation on colour stability and phenolic composition of Petit Verdot red wines","authors":"P. M. Izquierdo-Cañas, E. García-Romero, A. Mena-Morales, S. Gómez-Alonso","doi":"10.4081/WS.2016.5795","DOIUrl":"https://doi.org/10.4081/WS.2016.5795","url":null,"abstract":"In the present work we evaluate the effects of malolactic fermentation (MLF) on the colour parameters and polyphenolic composition of Petit Verdot red wines. MLF caused a significant decrease in colour intensity in wines, approximately 9%. In line with that, the results showed a decrease in the concentration of anthocyanins (acylated and non-acylated), but an increase of the pyranothocyannins concentration. MLF did not produce important variations on the content of hydroxycinnamic acids derivatives, stilbenes and flavonols. Regarding flavan-3-ols, MLF caused a decrease in monomers, total flavan-3-ols and percentage of galloylation, and an increase on the percentage of prodelphinidins. However, no effect over mean degree of polymerisation was observed. Thus, it is unlikely that these changes may affect the acceptability of wines by consumers.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115689337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2015-05-26DOI: 10.4081/WS.2015.4941
R. Guzzon, M. Malacarne, S. Moser, R. Larcher
{"title":"Together is better. Experience of simultaneous fermentation of yeast and bacteria as a possible strategy to prevent stuck fermentation in difficult wines","authors":"R. Guzzon, M. Malacarne, S. Moser, R. Larcher","doi":"10.4081/WS.2015.4941","DOIUrl":"https://doi.org/10.4081/WS.2015.4941","url":null,"abstract":"In the field of winemaking, malolactic fermentation is a key aspect in obtaining high quality wines. Unfortunately, in some oenological contexts effective evolution does not take place because of the occurrence of certain limiting factors for malolactic bacteria in wine. Simultaneous alcoholic and malolactic fermentation in grape must is a promising alternative that promotes the survival of bacteria, due to the absence of certain limiting factors such as ethanol or other toxic substances produced by yeasts in the native grape must. The risk of wine depreciation due to the spoilage activity of malolactic bacteria can be reduced by using selected strains of Oenococcus oeni, with proven behaviour in terms of malolactic fermentation occurring in the presence of sugars. In this work we compared the activity of a strain of Oenococcus oeni in malolactic fermentation of a Chardonnay grape must, using different winemaking protocols characterised by sequential or simultaneous inoculums of microbial starters. The results are discussed both in terms of fermentative behaviour and the quality of the wines obtained, with careful analysis of the main chemical parameters of the wines and of 47 different volatile compounds, giving an exhaustive overview of the opportunities and the risks related to different wine fermentation strategies.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124674656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-12-23DOI: 10.4081/WS.2014.4625
Mitchell G. Spring, Thomas H. Wiseman, R. Hallock
{"title":"Does gently clearing the nasal passage affect odor identification?","authors":"Mitchell G. Spring, Thomas H. Wiseman, R. Hallock","doi":"10.4081/WS.2014.4625","DOIUrl":"https://doi.org/10.4081/WS.2014.4625","url":null,"abstract":"Identifying scents in a wine’s bouquet is considered one of the most important steps in the process of wine tasting. An individual’s ability to successfully do this is dependent on the sense of smell; thus, altering the nasal microenvironment could have a powerful effect on the wine tasting experience. In the present study, we examined olfactory performance in healthy participants who cleared their nasal cavity before odorant presentations. Fifty undergraduate participants were assessed with a standardized test of olfaction requiring the recognition of a battery of odors. Half of these participants cleared mucus from their nasal cavities (by gently blowing their noses) prior to the assessment. No difference was found in performance between those who cleared their nasal passages and those who did not. Further, data were not different than known population data from the test. These data suggest that gently clearing the nasal cavity before presentation of odorants bears no effect on the ability to perceive those odor qualities.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130558535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-12-18DOI: 10.4081/WS.2014.4815
I. Muñoz-González, I. Espinosa-Martos, J. J. Rodriguez, A. Jiménez-Girón, P. J. Martín-Álvarez, B. Bartolomé, M. Moreno-Arribas
{"title":"Changes in the fecal profile of inflammatory markers after moderate consumption of red wine: a human trial study","authors":"I. Muñoz-González, I. Espinosa-Martos, J. J. Rodriguez, A. Jiménez-Girón, P. J. Martín-Álvarez, B. Bartolomé, M. Moreno-Arribas","doi":"10.4081/WS.2014.4815","DOIUrl":"https://doi.org/10.4081/WS.2014.4815","url":null,"abstract":"The aim of this work was to evaluate the potential of moderate consumption of red wine to modulate the intestinal inflammation response on healthy humans. Fecal samples from a human intervention study (n=34) were collected before and after consumption of red wine for 4 weeks, and 24 immune markers including immunoglobulins, cytokines, chemokines and growth factors, were analysed. When considering the whole group of case volunteers, almost no statistically significant differences were found in the immune markers after wine consumption. However, a detailed exploration of the values differentiated a 6-volunteer subgroup that showed unusually high values of cytokines before wine consumption. For this subgroup, wine consumption significantly reduced the content of 16 out of 24 markers down to usual values, especially noticeable for cytokines related to the promotion of initial inflammation (tumor necrosis factor-alpha, interleukin 6 and interferon-gamma). This study reveals, for the first time, changes in the fecal profile of inflammatory markers after moderate consumption of red wine.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122253280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-12-17DOI: 10.4081/WS.2014.4469
I. Balga, A. Kiss, L. Gál, A. Leskó, M. Kállay
{"title":"Evaluating the correlation between chemical and sensory compounds in Blaufränkisch and Cabernet Franc wines","authors":"I. Balga, A. Kiss, L. Gál, A. Leskó, M. Kállay","doi":"10.4081/WS.2014.4469","DOIUrl":"https://doi.org/10.4081/WS.2014.4469","url":null,"abstract":"The positive physiological effects of the bioactive compounds of red wines have been known for a long time. Besides that, the polyphenolic compounds of red wines represent one of the most important factors for oenology. With a special chemical analysis, we discover the relationship between chemical and sensory compounds. In this way, we explore which compounds influence sensory properties. The phenolic compounds are the quality attributes of the wine. The analysis of phenolic compounds was carried out in two red wines: Cabernet Franc and Blaufränkisch. The aim of this study was to analyse the chemical and organoleptic characteristics of these two wines and evaluate the connection between the two parameters. In addition, we also examined the influence of the polyphenolic content on sensory perception. The experiment was carried out in a cool climate wine region in Eger, Hungary, in vintage of 2008. We investigated the profile of phenolic contents in new and aged wines. Total polyphenolic content, anthocyanin, leucoanthocyanin and catechin were evaluated by spectrophotometer. Stilbenes were identified and quantified by high-performance liquid chromatography.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134538041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-12-15DOI: 10.4081/WS.2014.4574
T. Nardi, P. Vagnoli, A. Minacci, S. Gautier, N. Sieczkowski
{"title":"Evaluating the impact of a fungal-origin chitosan preparation on Brettanomyces bruxellensis in the context of wine aging","authors":"T. Nardi, P. Vagnoli, A. Minacci, S. Gautier, N. Sieczkowski","doi":"10.4081/WS.2014.4574","DOIUrl":"https://doi.org/10.4081/WS.2014.4574","url":null,"abstract":"Brettanomyces bruxellensis and the consequences of its development in wines are a continuous threat for wine quality. In this context, chitosan of fungal origin was introduced as a new tool to control B. bruxellensis in the context of winemaking. Recent studies have showed the impact of a fungal origin chitosan application on wines contaminated with B. bruxellensis, leading to the elimination of B. bruxellensis cells. In these studies, the chitosan preparation was added, the wine racked off after 10 days and the efficiency of the treatment was evaluated in a short delay after the treatment. This study focused on the evaluation of the impact of different addition protocols of an enological chitosan preparation on B. bruxellensis population evolution and volatile phenols content along the aging, up to 9 months. The results confirm the interest of fungal origin chitosan as a preventive tool to control B. bruxellensis in the context of wine aging.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114587646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-12-10DOI: 10.4081/WS.2014.4477
D. Lanzmann-Petithory
{"title":"Professor Serge C. Renaud (1927-2012): French Paradox and wine active compounds","authors":"D. Lanzmann-Petithory","doi":"10.4081/WS.2014.4477","DOIUrl":"https://doi.org/10.4081/WS.2014.4477","url":null,"abstract":"Not available.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121158686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-12-05DOI: 10.4081/WS.2014.4475
J. Portu, R. López, I. López-Alfaro, L. González-Arenzana, P. Santamaría, T. Garde-Cerdán
{"title":"Amino acid content in red wines obtained from grapevine nitrogen foliar treatments: consumption during the alcoholic fermentation","authors":"J. Portu, R. López, I. López-Alfaro, L. González-Arenzana, P. Santamaría, T. Garde-Cerdán","doi":"10.4081/WS.2014.4475","DOIUrl":"https://doi.org/10.4081/WS.2014.4475","url":null,"abstract":"Nitrogen is an important element for grapevine and winemaking which affects the development of the plant and yeast, and therefore it is important for wine quality. The aim of this work was to study the influence of foliar application to vineyard of proline, phenylalanine and urea and two commercial nitrogen fertilizers, without and with amino acids in their formulation, on the wine amino acid content and their consumption during the alcoholic fermentation. The results showed that these treatments did not affect the amino acid composition in wines. The differences observed for certain amino acids were so small that the concentration of total amino acids was not significantly different among wines. Moreover, it was observed that the higher the content of amino acids in the medium, the greater their consumption during the alcoholic fermentation.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130629523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wine StudiesPub Date : 2014-10-01DOI: 10.4081/WS.2014.4474
W. Parr, Jordi Ballester, D. Peyron, C. Grose, D. Valentin
{"title":"Perception of mineral character in Sauvignon blanc wine: inter-individual differences","authors":"W. Parr, Jordi Ballester, D. Peyron, C. Grose, D. Valentin","doi":"10.4081/WS.2014.4474","DOIUrl":"https://doi.org/10.4081/WS.2014.4474","url":null,"abstract":"Of the descriptors employed to characterize wine organoleptically, minerality is arguably one of the most enigmatic. The aim of the work described in this article was to delineate the nature of perceived minerality in Sauvignon wine, specifically its sensorial reality for experienced wine professionals from France and New Zealand. Participants evaluated 16 Sauvignon blanc wines (8 French; 8 New Zealand) under three conditions, ortho-nasal olfaction, palate only (Nose-clip condition), and by full tasting (global perception). Data from the global condition only are reported here. Key results include: i) that although there were quantitative differences in perception of minerality as a function of culture, there was substantial agreement conceptually between French and New Zealand participants in terms of the sensorial experience of minerality; and ii) that perceived minerality associated significantly with other key wine descriptors, notably presence of citrus, stone-related characters (e.g., flinty or chalky/calcareous notes), and reductive notes, along with absence of Sauvignon varietal characteristics (passion fruit; green notes). Of particular interest, no significant, direct association was found between perceived sourness/acidity and minerality judgments for either culture.","PeriodicalId":234588,"journal":{"name":"Wine Studies","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126095353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}