Perception Of Wine Research Articles

Interaction between salivary proteins and cork phenolic compounds able to migrate to wine model solutions

This work reports the study of the interaction of human salivary proteins (SP) with phenolic compounds that migrate from cork stoppers to wine. This study yields valuable data to understand the influence that these compounds may have on the sensory perception of wine from an astringency perspective. For that, three cork fractions containing the phenolic compounds that migrate in greater amounts from cork to model wine solutions were selected. Fraction M1 contains gallic acid, protocatechuic acid, vanillin and protocatechuic aldehyde; fraction M2 comprises essentially gallic acid and ellagic acid, as well as castalagin and dehydrocastalagin; and fraction M3 contains the two isomeric ellagitannins castalagin and vescalagin. The reactivity of each fraction towards SP was M3 > M2 > M1. Within M3 fraction, castalagin showed a higher ability to precipitate SP (mainly aPRPs, statherin and P-B peptide) comparatively to vescalagin. In M1 fraction, caffeic and sinapic acids were the compounds with the highest interaction with SP, mainly cystatins. In addition, there also seems to be a matrix effect (presence of other compounds) that could be affecting these interactions.

Adapting Polarized Projective Mapping to Investigate Fruitiness Aroma Perception of White Wines from Oregon

Fruitiness is a highly desirable aroma quality in white wines. This study aimed to investigate the fruitiness aroma perception of white wines using a rapid sensory method and to compare the sensory maps obtained from wine experts and trained consumers. A polarized projective mapping (PPM) method was adapted by using fruit standards as fixed poles. Twenty-one white wines were selected for this study. Ten wine experts and twelve trained consumers participated in the adapted PPM followed by ultra-flash profiling (UFP). While experts and trained consumers used different poles to characterize the Pinot Gris and Viogniers, both panels used the stone fruit pole for the Chardonnays. UFP revealed that the Pinot Gris and Viognier samples presented fruity and floral aromas and most Chardonnay wines presented non-fruity aromas. The white wines investigated presented a wide range of fruity aromas. The use of aroma standards instead of products as poles seems to be a reliable alternative to investigate fruitiness in white wines. This study helped us to understand the predominant aromas of varietal white wines from Oregon and emphasized the importance of adapting sensory methods to investigate fruitiness perception.

Insights on the role of acetaldehyde and other aldehydes in the odour and tactile nasal perception of red wine

Wine models with or without a dearomatised and lyophilized red wine extract containing a young red aroma base (control) plus one vector with one or several aroma compounds (unsaturated-aldehydes, saturated-aldehydes, benzaldehyde, isoamyl-alcohol, methoxypyrazines and (Z)-1,5-octadien-3-one) were prepared. Models were spiked with increasing amounts of acetaldehyde whose headspace concentrations were controlled. Odour and nasal chemesthesic properties were assessed by a trained sensory panel.Results confirm the contribution of the different players, notably isoamyl-alcohol, (Z)-1,5-octadien-3-one, benzaldehyde and methoxypyrazines, to wine aroma and tactile nasal characteristics and demonstrate that acetaldehyde levels play an outstanding role in their modulation. At low levels, it can play positive roles in some specific aromatic contexts, while at higher levels, enhance the negative effects associated to the generic presence of other aldehydes (saturated, unsaturated and Strecker aldehydes) by enhancing “green vegetable” notes and “itching” character and the “burning” effects linked to high levels of isoamyl alcohol.

Millennial university students’ valuation of traditional wine: Evidence from an experimental auction

This paper analyzes whether the perception of traditional wine brings value to millennials. Based on survey data and experimental auctions (165 participants), this study identifies the main factors affecting this consumer groups’ willingness to pay for traditional wine through a Tobit model methodology. The results suggest that millennials are willing to pay a higher price depending on demographic factors such as monthly disposable income, on wine involvement variables such as consumption frequency, and on nourishing and health aspects and product availability at points of sale, both of which are wine purchase decision criteria. The investigation has significant marketing and policy implications.

Region of origin and consumers’ quality perception of wine: an assimilation-contrast approach

Wine quality perception involves both intrinsic and extrinsic attributes and is related to consumer liking and acceptability of a product. The main purpose of this paper is to evaluate the actual role of the region of origin cue on the experienced, expected, and perceived quality of wine, as well as on the discrepancies between them. Using an experimental design set up, real tasting sessions were applied to elicit consumer quality perception in three different information conditions: (1) blind tasting (2) labelled tasting (region informed evaluation); and (3) wine tasting under full information. In total, 136 wine consumers stated their preferences through liking score. The results from the assimilation-contrast framework show that region of origin affects the experienced, expected, and perceived quality, as well as the agreement between them. Thus, the region of origin may offer a good predictive value of the product, increasing the consumer expectations. These results have important implications for producers as they demonstrate that the region of origin may be used as a brand.

Consumer Perception of Red Wine by the Degree of Familiarity Using Consumer-Based Methodology.

Capturing and understanding consumers’ perceptions is not a simple quest, particularly for wine, which is one of the most complex beverages. In contrast to the increasing amount of wine import and consumption, studies on how Korean consumers perceive wine characteristics are limited. In this study, two different consumer-based questionnaires, check-all-that-apply (CATA) and rating, were used to compare the discrimination ability of samples and attributes. Consumer data were analyzed and compared to investigate whether the difference in the degree of familiarity with consumption frequency affects wine perception and preference. Consumers discriminated samples and attributes by sample using both scales, CATA and rating. It was confirmed that the CATA citation frequency reflected the rated intensity of the attributes in this study. Consumers who checked or did not check the CATA response rated the intensity of attributes differently. Different consumer subgroups based on familiarity also discriminated the samples effectively. However, users had a higher configuration similarity between the two questionnaires than non-users. Furthermore, the preference for wine might be affected by the degree of familiarity.

Exploring the Factors Affecting the Behavioral Intention of Visitors in Wine Festival: The Case of China Dalian International Wine and Dine Festival

Wine-related festivals and events have emerged as a unique tourism product bringing not only economic value but also enhancing the brand image of a destination. China being the third largest wine-consuming country in the world has been organizing wine and food focused festivals which are participated by the residents as well as international visitors. Considering the size and scope of these events in China, this study explores the motivation behind participation in the wine festivals and investigates the influence of motivation factors on the perception of festivalscape, satisfaction, and behavioral intentions. The constructs of the study were framed after a thorough review of the literature. The findings of the study revealed that while primary and secondary motivations have a positive effect on the perception of food and wine, generic features, and fun; only primary motivation has a positive effect on satisfaction, whereas secondary motivation has a negative effect on satisfaction. It was also found that the perception of wine & food and fun has a positive impact on satisfaction, while the perception of generic features has no effect on satisfaction. The behavioral intentions were also found to be positively affected by satisfaction.

Limited relationship between temporality of sensory perception and phenolic composition of red wines

In wine, polyphenols are closely associated with astringency, bitterness, color and aroma. Some of these sensory parameters have been reported to be dynamically perceived during wine tasting. In this study, time-dependent sensory methodologies (Temporal Dominance of Sensations or TDS, and Temporal-Check-All-That-Apply or TCATA) were used to characterize wines made from six grape varieties. Sensory analysis was contrasted against the phenolic composition of wines. Temporal sensory methods revealed differences among wines which did not reflect the limited differences observed between wine phenolics. However, some significant associations could be described, namely, detection time of bitterness with concentration of proanthocyanidin polymers, colorimetric variables with content of anthocyanins, and dominance and higher incidence of bitter taste with contents of tyrosol and flavonols. Astringency showed no relationship with any single polyphenol or specific group of polyphenols. It is concluded that, despite the major contribution of polyphenols to wine composition, their unique and independent influence on time associated sensory aspects should be critically scrutinized due to the multifactoriality of elements participating in the perception of a temporary sensation.

와인 가격 공정성 지각이 판매점 이미지, 신뢰 및 만족에 미치는 영향

와인에 대한 소비와 와인 애호가가 증가하면서 와인 가격에 대한 관심이 증가하고 있지만 와인의 가격에 대해 일반 와인 소비자들은 모르는 것이 현실이고 이로 인해 와인의 가격이 비싸다는 인식을 많이 하고 있는 실정이다. 와인 가격에 대한 관심과 더불어 가격 측면에서 중요한 것은 가격 공정성이다. 본 연구에서는 와인의 가격 공정성, 제품 이미지, 고객서비스 이미지, 경쟁적 이미지, 사회적 이미지, 성장성 이미지, 신뢰 및 만족 속성 간의 관계를 규명하고자 2015년 3월 약 1개월 간 서울 시내 특급호텔 레스토랑, 와인바 및 주점, 패밀리 레스토랑, 백화점, 대형마트, 주류 전문 판매점에서 와인을 구매하는 구매자들을 대상으로 설문조사를 하였다. 이를 통해, 신뢰에 영향을 미치는 가격공정성에 대한 와인 구매자가 인식하는 판매점 이미지 중 제품 이미지와 고객서비스 이미지, 사회적 이미지의 순으로 신뢰에 정(+)의 영향을 미치는 것을 알아냈다. 하지만 경쟁적 이미지는 오히려 부(-)의 영향을 미치는 것으로 나왔다. 본 연구를 통한 시사점은 마케팅담당자가 가격할인을 통한 판매촉진을 시도할 때 발생하는 지나친 경쟁적 이미지를 소비자가 지각할 때 오히려 가격 공정성을 훼손하여 고객 신뢰를 잃을 수 있다는 점과 와인의 판매점이 가격공정성에 대한 긍정적 이미지를 형성하기 위해서는 사회적 책임을 다하는 것이 제품과 서비스 자체의 이미지 다음으로 신뢰형성에 중요함을 시사해 주고 있다.

Investigating How the Disclosure of Production Methods Influences Consumers’ Sensory Perceptions of Sparkling Wines

The primary objective was to identify how the disclosure of production methods, including sustainable practices, would impact consumers’ sensory perceptions. The secondary objective was to identify the attributes consumers use to describe Nova Scotia (NS) sparkling wines. The first trial used projective mapping (PM) and ultra-flash profiling (UFP) to describe eight sparkling wines (n = 77). In the second trial, a check-all-that-apply (CATA) questionnaire and 9-point hedonic scales were used (n = 101). Three sparkling wines, from the previous trial, were evaluated blinded and with a production claim. The first trial found that consumers separated the wines based on their fruit- or earth-like attributes. In the CATA trial, desirable attributes, such as sweet and smooth, were used more frequently to describe the wines with sustainable production methods. No significant differences were found in the overall liking scores after the disclosure of the production methods (α = 0.05). These findings indicate that disclosure of production methods did not impact participants’ sensory perceptions of sparkling wine. In addition, an evaluation among different generations should be considered, as millennials have been found to hold sustainable practices to greater value.

Use of alimentary film for selective sorption of haloanisoles from contaminated red wine

Haloanisoles (HAs) are known to compromise wine quality because of their mouldy off-flavours. Up to now no treatment exists to eliminate the presence of these unpleasant volatiles in wine. This research aimed i) to assess the alimentary plastic film efficacy to remove or lessen HAs content in polluted wines; and ii) to evaluate its impact on wine quality. The film-treatment reduced significantly (p < 0,05) the 2,4,6-trichloroanisole (TCA) content of initial wine. This decrease became more noticeable as the contact time film-wine increased.Chromatic characteristics, phenolic and proanthocyanidin contents, and woody aroma profile did not change because of the film-treatment. A significant sorption of certain esters was observed, but as HAs were removed under detection thresholds, fruity perception of wines was improved.Globally, the alimentary plastic film was able to improve the organoleptic quality of wines contaminated with HAs, by reducing the cork taint and enhancing their overall fruity aroma.

“This wine is dead!”: unravelling the effect of word-of-mouth and its moderators in price-based wine quality perceptions

PurposeThe purpose is to evaluate the effect of positive and negative traditional word-of-mouth (PWOM and NWOM) on price-based quality perceptions of middle-range wine (price comprised between US$4 and US$12), considering the moderator role of type of relationship between source and receiver –in terms of the strength-of-tie – and the wine expertise of the source.Design/methodology/approachA between-subjects experimental design was employed to test the hypotheses. The dependent variable, perceived quality, was analysed using analysis of variance (ANOVA) and independent samples t-tests.Findings(1) WOM significantly affects price-based wine quality perceptions only when the source is perceived as expert, and independently on the type of relationship between source and receiver. (2) WOM has no “additive effect” on price-based quality perceptions for all but one condition (PWOM about high-priced wine from a close and expert source). (3) WOM results more useful than price to assess quality mainly in “contradictory” situations.Research limitations/implicationsThe main limitation is related to the fact that is an experiment, specifically the manipulation of strength-of-tie and source expertise. Although manipulation checks show good results for the procedure, future research should try to design better ways to manipulate these variables, or different procedures to capture similar data.Practical implicationsManagerial efforts aimed to the encouragement of PWOM will be more efficient in markets with a high proportion of experts. Also, the marketing strategy of stimulating PWOM would be more effective for wines in the low-price category.Originality/valueThis study contributes to understand the impact of WOM on wine quality perceptions by examining if WOM affects priors price-based quality perceptions. In particular, we determine if price-based quality perceptions are able to be modified by PWOM and NWOM, a “competing” approach that is novel within the wine literature in which price is usually the most used cue to elaborate quality perceptions.

German Consumers’ Perceptions of Organic Wine—A Qualitative Approach

This study aims to examine what German wine consumers know and think about organic wine. It also investigates the effects that knowledge and attitudes have on wine purchasing decisions. Data for this survey were collected using a qualitative approach, with 12 focus group discussions at three different locations in Germany, observations of wine choices and an acceptance test to assess consumers’ knowledge of and reactions to organic wine. Most wine consumers are unaware if a wine is organic when they purchase it. A general skepticism and lack of knowledge about organic wines undermine any active demand for these products. Information and comparisons between the production of organic and conventional wines can improve awareness and consideration of the organic variety and increase consumers’ willingness to buy organic wine. To increase the active demand for organic wine, its attributes need to be communicated to consumers. This can be achieved by improving the visibility of organic certification, conducting information campaigns to inform consumers about wine and organic wine production and collaborating with organic wine associations to advance the public image of organic wines.

Investigating the disclosure of ingredient lists impact on consumers' sensory perceptions of red wines produced in Nova Scotia, Canada

AbstractWineries have started to state their ingredients list on their bottles of wine; however, they have not considered how this may affect consumers' acceptability and sensory perception. The first objective was to determine the attributes consumers used to describe Nova Scotia (NS) red wines. The second objective was to identify the impact ingredient lists have on consumers' sensory perceptions of wine. In the first trial, 81 participants evaluated NS red wines (n = 8) using projective mapping and ultra‐flash profiling. In the second trial, three red wines were selected to be evaluated with and without an ingredient list. Participants (n = 98) evaluated the wines through a check‐all‐that‐apply questionnaire and 9‐point hedonic scales. Sweet, fruity, and floral attributes were used more frequently to describe the wines with a shorter ingredient list. However, there was no significant difference in the acceptability of wines when they were evaluated blinded and with the ingredient list.Practical applicationsConsumers are asking for more information on to be presented on alcoholic beverages, including ingredients. Understanding which attributes contribute to and the impact of ingredient lists on consumer liking is vital to the wine industry. This study used check‐all‐that‐apply and hedonic scales were used to evaluate how the presence of ingredient lists affected the participants' sensory perception and overall liking of the red wines. It was determined that the presence of ingredient lists did not significantly affect the acceptability or the perceived sensory properties of red wines.

Current Research Related to Wine Sensory Perception Since 2010

Due to socioeconomic changes, the demand for and interest in alcoholic beverages have recently been increasing. Among various alcoholic drinks, consumer preference for wine could be varied. It might be related with its complexity, as wine is known to have characteristics that are difficult to understand. Several factors, such as intrinsic or extrinsic factors interact to influence wine complexity and consumer perception. Many studies have been conducted to understand the complexity of wine, allowing deeper insight into its perception by consumers. Studies over the last decade on wine sensory perception using descriptive analysis and consumer tests were reviewed. Additionally, chemical analysis studies were included because flavor constituents information would contribute to a better understanding of sensory perception. Descriptive sensory analysis of wine was reviewed considering panels and flavor characterization for better understanding wine-related research. Several consumer studies regarding liking/preference, emotion, context, and extrinsic factors to understand consumer preference or perception were reviewed. Research on chemical constituents may affect consumer perception and is thus presented in this review. However, most of the research was focused on a narrow range of wine, thus is missing overall wine category evaluations. Furthermore, evaluations were mainly in wine-producing countries, resulting in limited understanding of an emergent market. This review will help guide wine researchers and industry by providing information on factors influencing consumer wine perception.

Flavor perception of wine is unchanged during commercial flight: a comparative field study

Background: It is generally accepted that the human perception of flavor and odor is altered in low-pressure environments such as airplane cabins. This has been demonstrated in several simulation studies, but never in a field study conducted in an authentic environment, and never using wine as the object of study. Methods: We performed a comparative field study composed of two wine tastings. The first tasting was conducted on board an aircraft flying at standard cruising altitude and the second tasting was conducted at ground level. Subjective taste experience and current mood were evaluated through a validated questionnaire. The study was reported according to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guideline. Results: The study included 22 participants, none of whom had any special training in wine tasting. No statistically significant difference in experienced flavor intensity was found between the high and low altitude tests, with median aromatic intensities of 5 (interquartile range 3.5-6.0) and 5 (interquartile range 4.0-6.5) respectively, measured on a 9-point hedonic scale. Additionally, there was no detectable difference in several other taste parameters. Conclusions: These findings suggest that even though experimental studies have demonstrated that senses of taste and smell may be suppressed on commercial flights, the subjective wine tasting experience of non-professionals in real life testing may not be affected.

Rheological study of tannin and protein interactions based on model systems.

The interaction between wine tannins and saliva proteins is responsible for wine astringency perception, producing a depletion of salivary proteins and changes on oral friction. In sensorial terms, astringency is described as a dryness and puckering sensation in the mouth, which is related to the "structure" or "body" of red wines. However, these last descriptors, as structure or body, are perceived during wine tasting and commonly related to wine viscosity. To address these differences on sensory response, we hypothesize that tannin-protein interactions could be a key factor involved in the viscosity of red wines/saliva mixtures, just as they are for astringency. We used a rheological method to study the impact of tannin-protein interaction on the viscosity of model wine-saliva systems. Mixtures of model saliva based on mucin and typical astringent compounds, as commercial tannins and gallic acid, were evaluated for their rheological behavior. The viscometric flow of the fluid mixtures was determined, and subsequently, the viscosity was evaluated at a shear rate of 60 s-1 . It was observed that red wines/saliva mixtures exhibit non-Newtonian flow and ascending tannin doses led to an increase in the apparent viscosity. Nephelometric analysis demonstrate that tannin-mucin aggregates were formed, which suggests that these complexes were potentially responsible for the viscosity increases, modifying the rheological behavior of these mixtures. Results from this work propose that tannin-protein interactions are also involved in the underlying mechanism of thickness perception of red wines and rheology could be a complementary instrumental technique for wine mouthfeel characterization.

Understanding Australian Wine Consumers’ Preferences for Different Sparkling Wine Styles

This study investigated the perceptions and preferences of Australian wine consumers towards different styles of sparkling wine, including French Champagne and Australian sparkling white, red and rosé wine, Moscato and Prosecco. An online survey of 1027 regular sparkling wine consumers captured demographic information, sparkling wine perceptions and preferences, and typical spending and consumption patterns. Consumers were segmented into three distinct clusters (‘No Frills’, ‘Aspirants’ and ‘Enthusiasts’) using the Fine Wine Instrument model. The majority of No Frills consumers were female and typically consumed sparkling wine once per month. Almost 55% of Aspirants were male with a household income of more than AU$75,000. Enthusiast consumers were also predominantly male and well educated, and 64% were under the age of 35 years. Sparkling white wine and Champagne were generally the preferred styles for each consumer group, followed by Moscato and sparkling rosé wine. Interestingly, Moscato scored favorably with both No Frills and Enthusiast segments. Almost 25% of respondents indicated that they were not familiar with Prosecco, while sparkling red wine was perceived similarly by male and female consumers. The findings from this study can be used by sparkling wine producers to better target their products and marketing to the specific needs and expectations of consumers within different segments of the Australian domestic market.

Astringency subqualities and sensory perception of Tuscan Sangiovese wines

Aim: The Sangiovese grape cultivar is at the basis of the most well-known Italian wines produced in the Tuscany region. However, little is known about the sensory characteristics of Tuscan Sangiovese wines, and the diversity in astringency subqualities has never been investigated. In this study we evaluated the sensory perception of 16 commercial Sangiovese wines belonging to four categories of denomination (Chianti DOCG, CH; Chianti Classico DOCG, CC; Morellino di Scansano DOCG, MS; Toscana IGT, TS), and again after 20 months of bottle aging.Methods and results: A sensory evaluation was made, consisting of the astringency subqualities, taste, odor, and aroma profiles of wines. In addition, chemical analyses were carried out for the base parameters, polyphenols and some volatile compounds. Astringency subqualities varied depending on the percentage of Sangiovese in wines (from 80 % to 100 %). Blended Sangiovese wines were characterized by positive mouthfeel sensations. According to these, the drivers of liking the wines were associated with soft, mouthcoat, and rich subqualities. The Tuscan Sangiovese denominations were differentiated by volatile active compounds, whereas after about two years of bottle aging the astringency subqualities better achieved this task. Moreover, aging also influenced the evolution of wines: CC and CH wines positively evolved, revealing a complex odor profile; MS lost the fruity character; and TS was less involved in sensory modification.&#x0D; Conclusions: For the first time, a detailed evaluation of the astringency subqualities of commercial Sangiovese wines was undertaken. Sangiovese subqualities differed according to the percentage of Sangiovese and denomination. Tuscan denominations were distinguished by peculiar sensory characteristics. In addition, bottle aging significantly influenced the evolution of the sensory perception of Sangiovese wine. In particular, mono-varietal Sangiovese wine needed a long period of aging to soften the astringency characteristics.Significance and impact of the study: Sangiovese wine represents - with its denominations and styles - the best-known and high-quality Italian wine in the world, and its popularity is increasing worldwide. Tuscan Sangiovese wines are often a blend with other red varieties of the region, and these can vary according to the production regulations. This study aimed to improve the knowledge of the sensory characteristics of Sangiovese wines belonging to different denominations and made with different percentages of this grape cultivar. In particular, the astringency subqualities are fundamental to fully appreciating the quality of the red wine during tasting.

Effect of aroma perception on taste and mouthfeel dimensions of red wines: Correlation of sensory and chemical measurements.

The present study was aimed at increasing the understanding of red wine mouthfeel by investigating the potential cross-modal effect of aroma and establishing relationships between sensory dimensions and chemical measurements. Investigations involved a set of 42 non-wooded red wines that were described with a novel application of a variant of the rate-all-that-apply sensory methodology ("rate-K attributes") by a group of Spanish wine experts under two conditions: (1) with no aroma perception (using nose clips) and (2) with aroma perception. In parallel, ethanol content, pH, titratable acidity, tannin activity, concentration of tannins, and spectroscopic measures of wines were determined. Results suggest that aroma does not play a main effect on taste or mouthfeel perception of red wines, except for oily mouthfeel, which was hypothesised to be masked by earthy aromas and enhanced by alcoholic nuances attributed to cognitive interactions. Independent and non-correlated mouthfeel dimensions such as dry/silky and sticky, grainy, prickly or oily were also identified. Tannin activity was shown to be highly positively correlated to dry on the palate, and tannin concentration with both overall dry and dry on the palate. A significant partial least squares regression model showed that tannin concentration and activity (positive contribution) as well as pH values (negative) were good predictors of the mouthfeel dimension mainly related to dry and sticky terms.