Massey Research Online - Browsing by Author "Hort J"

Browsing by Author "Hort J"

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Comparing traditional check-all-that-apply (CATA) and implicit response time Go/No-go approaches for profiling consumer emotional response when tasting food
(Elsevier Ltd, 2023-12) Weerawarna N.R.P. M; Godfrey AJR; Loudon M; Foster M; Hort J
Adapting implicit approaches to capture consumer responses when tasting foods is of recent interest in sensory and consumer science. Implicit consumer responses are reported to be more spontaneous than explicitly gathered data. Traditionally, emotional response to foods is captured using explicit methods like check-all-that-apply (CATA). The present study aimed to compare an implicit response time (IRT) Go/No-go approach with traditional CATA to profile consumer emotional responses. Participants (n = 104) were consumers of, or willing to consume, cow's milk and plant-based milk alternatives (PBMA). Emotional responses for two cow milk and five PBMA products were evaluated across two sessions using IRT and CATA. The cow milk products were replicated across the sessions to allow consistency of response across sessions to be evaluated for each method. Data were collected using a bespoke single page web application (JavaScript, ECMA 2015). Data consistency across sessions (Spearman correlation (ρ)), emotion selection frequency (ρ and generalised linear models) and product discrimination (linear mixed models and correspondence analysis) were compared across the IRT and CATA approaches. Results showed high data consistency from both IRT and CATA across the two sessions (ρ > 0.89). Emotion selection frequency was also comparable across IRT and CATA. Interestingly, CATA was differentiating more between cow's milk products and IRT within the PBMA space. However, further investigations showed that fewer participants provided different responses in CATA than when under time pressure in the IRT Go/No-go. Additional investigations on the performance of explicit versus implicit methods, or their combination, are required across different product matrices to identify the optimum approach to capture consumer product experience.
Cross-cultural differences and acculturation in affective response and sensory perception: a case study across Chinese immigrants and local consumers in New Zealand
(Elsevier Ltd, 2025-01) Dupas de Matos A; Chen A; Maggs R; Godfrey AJR; Weerawarna N R P M; Hort J
Understanding cross-cultural variation in perception is essential for identifying culture-specific factors impacting product acceptability. While immigrants may initially maintain their preferences, acculturation levels vary. To understand to what extent immigrants can be used as a proxy to model overseas markets, this study investigated short (CHS) and long-term (CHL) Chinese immigrant responses to plain yoghurts compared to New Zealand (NZ) Europeans (E). Three groups (CHS, CHL and NZE, n = 222) evaluated liking of, emotional response to, and sensory perception of 10 plain yoghurts. Groups liked yoghurts similarly. Notably, NZE rated emotions lower than both immigrant groups, with a few exceptions. Both Chinese groups rated most emotions similarly, but CHL rated some closer to NZE. Positive emotions correlated with higher liking scores. However, cross-cultural differences existed for ‘guilty’ which was associated with yoghurts liked by NZE; and for ‘wild’ and ‘mild’ associated with yoghurts disliked by both immigrant groups. Citation proportions for some sensory attributes differed among all groups, dependent on the sample. But level of acculturation between immigrant groups was limited. Sweetness, vanilla, stone fruit and cream flavours, smoothness, and creaminess drove liking across all groups, whereas only the Chinese valued umami, undoubtedly due to positive associations with it. Some effects of acculturation for long-term immigrants were evident, but responses were often closer to their short-term counterparts. Therefore, immigrants in general provide a useful proxy for measuring consumer responses in early stages of product development for this overseas market, but with consideration of their residence time in the host culture.
Development of a consumer-led emotion lexicon for meat and plant-based burger patties using digitally recreated eating contexts
(1/06/2023) Orr RE; Giezenaar C; Godfrey AJR; Hort J
The decision to consume novel foods such as plant-based meat alternatives is often determined by emotional response. Generic food emotion lexicons are available for measuring emotional response, however, such lexicons may not capture the nuanced emotions associated with novel products. Here, an emotion lexicon specific to meat and plant-based burger patties was developed. Discussion groups, where participants were digitally immersed in two typical burger eating environments, were used to generate relevant emotion terms toward different patties. A range of consumers contributed to the lexicon including users and nonusers of meat alternatives, two age groups, and three dietary groups. Subsequently, an on-line sorting task followed by hierarchical clustering was used to reduce the size of the lexicon. The final lexicon contained 24 emotion categories. The lexicon shared terms with generic lexicons but notably contained other emotions associated with food neophobia, uncertainty, and deception. Practical Applications: The results of this study provide an emotion lexicon specific to burger patties of meat and plant-based origins. Currently no emotion lexicon has been developed for plant-based patties, or plant-based meat alternatives in general. It provides an important tool for further research concerning links between sensory and emotional drivers of plant-based patty consumption across different types of patty consumers and has potential to be adopted for a wider product set.
Effect of sipping method on sensory response to single and multiple sips of vanilla milkshake using temporal-check-all-that-apply
(Wiley Periodicals LLC, 2022-10-05) Weerawarna N.R.P M; Godfrey AJR; Ellis A; Hort J
Whether drinking from a cup versus through a straw effects sensory perception is inconclusive, as is whether such differences hold across and within multiple sips. This study aimed to determine if product profiles and product discrimination varied depending on whether a product was sipped from a cup or through a straw. An expert panel (n = 9) investigated differences in temporal profiles of six milkshakes across sipping methods. Temporal discrimination across eight attributes was analyzed on selected time slices, across eight sips using generalized linear model Analysis of Deviance. Sweetness, vanilla, astringency, and liquorice attributes were cited significantly more often sipping through a straw, however sipping from a cup showed more significant attribute discriminations across products. Attribute discrimination was increased across multiple sips compared to sip one. Multiple sip TCATA analysis showed significant effects of sipping method within-sips and over multiple sips emphasizing the effects of sipping method on multiple sip TCATA product discriminations. Practical Applications: Milkshakes are often sold in bottles (enabling consumption either directly from the bottle or from a cup) or as on-the-go packs with a straw. This study showed that the sensory profile of milkshake varied depending on whether sipped from a cup or through a straw. However, often-sensory evaluations of beverages are performed by tasting from a cup. This indicates an important practical consideration in terms of sensory study design regarding evaluating products in the intended consumption format or formats. The findings also highlighted the importance of evaluating product volume (or weight) equivalent to single serving size to capture consumer experience closer to actual consumption occasions, as differences in response to one sip changed across multiple sips.
Effects of intrinsic and extrinsic product characteristics related to protein source, health and environmental sustainability, on product choice and sensory evaluation of meatballs and plant-based alternatives
(Elsevier Ltd, 2024-04) Giezenaar C; Godfrey AJR; Foster M; Hort J
Health is cited as a major driver for substituting meat with plant-based meat alternatives (PBMAs). In contrast, many consumers are reportedly unaware of the difference in environmental impact between meat and PBMAs. This study determined relative effects of internal (protein source) and external (health/origin/sustainability) product attributes on product choice and (expected) liking of meat and PBMAs. Participants (n = 144) ranked ten sets of three product concepts from best to worst in a discrete choice experiment (DCE). Random combinations of four product attributes were presented on hypothetical product packages: i) protein source (beef/chickpea/soy protein); ii) health-star rating (1.5/4.5 stars); iii) ingredient origin (local/imported); iv) sustainability rating (green tick absent/present), and product worth, related to each of the 24 possible attribute combinations, was determined. Secondly, commercially-available beef, soy, and chickpea products were sensorially evaluated for expected/actual liking, both blindly and alongside combinations of internal/external product attributes used in the DCE. The DCE indicated all product attributes affected product worth. However, two consumer segments were established: i) a ‘Protein Cluster’ (47%) comprising consumers who chose ‘beef’ products regardless of the remaining attributes present, and ii) a ‘Health/Sustainability Cluster’ (53%) of consumers whose choices were driven by positive health/sustainability claims. Protein source drove both expected and actual liking of the samples (p < 0.001). Health/origin/sustainability also contributed to expected liking (p < 0.05), but only health consistently affected actual liking ratings (p < 0.05). In conclusion, half of consumers chose products based on health/origin/sustainability claims, whereas the other half selected products based on protein source. Origin/sustainability claims affected product choice, but minimally affected product experience of plant-based samples.
Exploring consumer and wine expert views towards verjuice: a grape-based product made from a viticultural waste
(20/09/2022) Dupas de Matos A; Maggs R; Hort J
Identifying temporal drivers of product acceptance and rejection across sips during whole product consumption
(John Wiley & Sons, Inc, 2023-10) Weerawarna N. R. P. M; Godfrey AJR; Ellis A; Hort J
Measuring emotional response gives insights into consumer product experiences beyond liking. However, existing research rarely considers that emotional and hedonic responses can change during consumption of a whole portion. This research considered how well a combined multiple-sip temporal check-all-that-apply approach captured temporal drivers of product acceptance and rejection. Consumers (n = 104) profiled temporal sensory, liking and emotional responses to three milkshakes. Associations in temporal sensory, liking and emotional response citation pattern across multiple sips were investigated using generalized linear models, analysis of deviance and Pearson's chi-square test. Differences in the temporal dynamics of sensory, liking and emotional responses and associations between temporal sensory and affective responses were identified highlighting liking and emotional experience were related to the evolution of sensory attributes over time. Notably, sensory associations with emotional responses, including “bored,” “relaxed,” and “satisfied,” were better at identifying temporal drivers of acceptance/rejection more than associations to level of liking. Practical Applications: The research demonstrated that a combined multiple-sip temporal check-all-that-apply (TCATA) approach, representing whole product consumption, is an effective approach to gain deeper insights into the sensory drivers of consumer affective response. However, the applicability of analyzing within-sip variations in perception, and potential to use check all that apply by sip as opposed to TCATA needs to be considered on a product category basis.
Motivators and barriers to plant-based product consumption across Aotearoa New Zealand flexitarians
(Elsevier Ltd, 2024-08) Weerawarna N.R.P. M; Giezenaar C; Coetzee P; Godfrey AJR; Foster M; Hort J
Limited knowledge exists concerning Aotearoa New Zealand (A-NZ) flexitarians and their respective motivators and barriers towards consumption of novel plant-based products (PBPs) heralded as aids for dietary meat reduction. This study aimed to determine if A-NZ flexitarians, who have tried novel PBPs, can be segmented based on different motivators and barriers to meat reduction and PBP consumption, if the consumer profile of the different segments varies according to identified gender, generation group, neophobia and meat and PBP consumption frequency. It also aimed to identify sensory characteristics novel PBPs need to possess to be attractive to A-NZ flexitarians and if these vary across segments. PBP-consuming flexitarians (n = 584), stratified according to age (Millennial/Gen X), identified gender and meat consumption frequency, completed an online survey regarding a) their level of agreement regarding statements related to factors driving PBP consumption and flexitarianism in general, and b) their satisfaction with the sensory experience of consuming current PBPs. ‘Tastes good’ was the top-rated factor for selecting PBPs for all consumers, but most were dissatisfied with the sensory characteristics of current PBPs. K-means cluster analysis identified three flexitarian segments based on similarities and differences in key motivations and barriers to consume PBPs. Attitudes and behaviours related to nutrition/health, and social status attained from eating both PBPs and meat products, accounted for most variation across the respondents. Overall, higher food neophobia was associated with higher PBP consumption, suggesting that neophobia itself is not necessarily a barrier to PBP consumption in A-NZ flexitarians. Improving the sensory profiles of PBPs whilst delivering nutritional requirements presented as key considerations for future product development and research. This research highlights the importance of understanding the distinct values, attitudes and behaviours of different flexitarian groups as opposed to generalised research aimed at flexitarians per se.
Older Chinese adults' milk consumption habits: A study across 5 cities
(Elsevier Inc. on behalf of the American Dairy Science Association, 2024-06) Chen A; Moradi S; Huang J; Xu S; Sismey M; Hort J
Milk consumption in China has experienced a rapid growth over the past few decades. This study explored milk consumption habits of older Chinese adult regular milk consumers, by investigating what, where, when, with whom, why, and how milk was consumed. This study (n = 1,000) was conducted in 5 cities in China (first tier: Beijing, Shanghai and Guangzhou; second tier: Chengdu and Shenyang) with participants balanced by sex and age groups (45-55 and 65-75 yr old). Given different economies, general dietary habits, and lifestyles, differences in milk consumption habits between cities were hypothesized. The results showed that almost all participants consumed cow milk, at home and by direct drinking. Most participants consumed milk during breakfast, with their family and for nutrition and health purposes. However, variations by city were found in what type of, what fat level of, what brand of, when and how milk was consumed. Multiple factor analysis showed that "what" variable differentiated cities between tiers and among the first-tier cities, and that "when" and "how" variables also separated the 2 second-tier cities and from the first-tier cities. Although variation in how milk was consumed was also observed between sexes and age groups, hierarchical cluster analysis revealed that the 4 clusters of milk consumption habits derived were mainly differentiated by city: Beijing and Shanghai, Guangzhou, Chengdu, and Shenyang. This study provides comprehensive insights into the milk consumption habits of older Chinese adults and highlights the significant heterogeneity in milk consumption habits in China by city.
On-the-Pack Voluntary Well-Being Messaging for Milks Targeting Chinese Older Adults: A Content Analysis
(MDPI (Basel, Switzerland), 2022-08) Chen A; Moradi S; Hort J; Byrne DV
China is experiencing severe population aging. Given that milks targeting older adults are one of the most popular foods designed for Chinese older adults (COA), this study investigated on-the-pack (OTP) voluntary well-being messaging (VWM, ways of communicating a product's broad well-being benefits through information on food content or statements linked to favourable components, functions, or well-being outcomes) for milk targeting COA. Over 200 products identified from two sources (JD.com and Mintel's global new products database), were analysed for type, content, and VWM frequency for different brand origins and milk sources of various animal species, nutrition claim regulation compliance and alignment with nutrition facts. The results suggested: (1) different brand origins (domestic vs. international) and milk source (cow vs. goat) highlighted different well-being aspects of products, (2) three products failed to comply with government regulations made for nutrition labelling of pre-packed foods (GB 28050-2011), but (3) excepting fat, all 'contains' claims and most 'high' claims did not reflect significantly greater levels of nutrients, compared to products with no claims. The findings create a comprehensive picture of OTP VWM for milks targeting older adults in China, providing useful information for consumer, domestic, and international dairy industries, and policymakers.
Perceptions of Cultivated Meat in Millennial and Generation X Consumers Resident in Aotearoa New Zealand
(1/03/2023) Giezenaar C; Godfrey AJR; Ogilvie OJ; Coetzee P; Weerawarna N.R.P M; Foster M; Hort J
Evidence suggests that consumer perceptions and acceptance of cultivated meat (CM) differ between countries, cultures, and consumer groups. Limited research specific to Aotearoa New Zealand (A-NZ) is available. Survey responses from 592 A-NZ residents were analysed to determine CM awareness, willingness to engage with CM, and perceived CM product attributes relative to conventional meat and plant-based meat alternatives (PBMAs). The effects of gender, age, meat/PBMA consumption frequency, CM awareness, and food neophobia on CM perceptions were determined. The statements were rated on a seven-point Likert scale. Half (52%) of the respondents agreed they were aware of CM. The awareness was higher in men compared to women (p = 0.036), higher in Millennials compared to Generation X (p = 0.022), and higher in regular compared to infrequent PBMA consumers (p = 0.0003). The willingness to engage with CM and perceived CM product attributes were consistently more positive in consumers who were aware, compared with consumers not aware of CM (p < 0.05). Being male, Millennial, low neophobic and a low meat, or high PBMA consumer was also associated with higher potential engagement and perceptions of CM to varying extents. Segmentation divided the respondents into three groups. The ‘positive’ cluster (41%) consumed more PBMAs and less meat and was more aware of CM than the ‘neutral’ (50%) and ‘negative’ (9%) clusters. In conclusion, consumers in A-NZ are not a homogenous group with regards to their perceptions and potential engagement with CM. Increasing awareness and familiarity with CM will be an important strategy to increase engagement with CM.
Product Factors Affecting Milk Choices among Chinese Older Adults
(MDPI (Basel, Switzerland), 2024-01-23) Chen A; Moradi S; Hort J
In China, milk is promoted both as an optimal food and gift for older adults. To understand the product factors affecting older Chinese adult milk choices, choice simulations and surveys were conducted in Beijing, Shanghai, Guangzhou, Chengdu, and Shenyang, China. Participants (n = 1000, aged 45-55 years old and 65-75 years old) were asked to choose one milk product out of eight alternatives for self-consumption and gifting, respectively, and to indicate product factors under their considerations. Results showed that, for self-consumption, the top four most popular milk products (two with domestic brands and two with international brands) were chosen by 84.9% of the participants. Females and younger participants were more open to international brands than their counterparts. Popular milk products differed across cities, potentially due to brand familiarity. Brand (85.9%), on-the-pack, nutrition-related well-being messaging (72.9%), price (63.1%), shelf-life (63.0%), and production date (57.6%) were the most frequently reported product factors considered when choosing milk. More males considered price than females (66.9% vs. 60.0%, p = 0.02). Female and older participants showed greater concern for certain detailed product factors, such as production date and shelf-life, than their counterparts. Variation across cities was limited, with participants in Chengdu and Shenyang showing less concern for certain product factors such as on-the-pack, certificate-related well-being messaging. When milk products were chosen as a gift, although overall milk choice ranking remained similar, package style received increased attention (32.0% vs. 40.8%, p < 0.01), whilst all other product factors, especially price (63.1% vs. 49.5%, p < 0.01), were considered by significantly fewer participants. These findings provide valuable marketing insights, helping to understand consumer preferences and considerations in the process of milk purchase decision-making.
Profiling the novel plant-based meat alternative category: Consumer affective and sensory response in the context of perceived similarity to meat
(Elsevier Ltd, 2024-07) Giezenaar C; Orr R; Godfrey AJR; Maggs R; Meika F; Hort J
Plant-based meat alternatives (PBMAs) are increasingly popular and may contribute towards reduction of negative environmental impacts associated with the meat industry. Inferior sensory characteristics of PBMAs, compared to conventional meat products, remain a barrier for uptake of these products. This study aimed to profile a wide range of PBMAs for perceived similarity to meat, consumer liking, emotional response and sensory experience, and to determine consumer drivers of liking for this product category. Twenty-one PBMAs, spanning a broad range of product types (burger patties, sausages, meatball alternatives, chicken/beef pieces, bacon alternative, turkey roast alternative) and main protein ingredients (extruded plant proteins, tofu, or legumes/vegetables) representative of PBMAs available to Aotearoa New Zealand consumers, were tasted and evaluated by 140 Aotearoa New Zealand residents. Samples ranged widely in their perceived similarity to meat (median value range: 1.0–4.0 on a 5-point-scale) and overall liking ratings (mean ± SD, range: 35.1 ± 1.2––77.7 ± 17.4 on a 100-point hedonic scale). Overall liking ratings were driven mostly by liking for flavour, followed by texture, and less so by appearance. Sensorially, sample differentiation was mostly associated with variation in meat-related flavours and textures, or vegetable-related attributes. Notably meat flavour was the main driver of liking, and a very strong relationship (r = 0.92) was observed between perceived similarity to meat and overall sample liking ratings. Meat-like samples were also associated with positive emotional terms, whereas samples made from wholefoods were associated with negative emotional terms. Textural terms (‘gluey/slimy’, ‘pasty/doughy’) associated with wholefood products were also negative drivers for liking, and should be avoided in future PBMA products. In conclusion, the general population maintains a strong preference for PBMAs that are similar to meat, validating ongoing efforts to improve the meat-like properties of new and emerging products. PBMAs made from wholefoods require extensive product development to achieve consumer satisfaction across the category.
Sensory characteristics of plant-based milk alternatives: Product characterisation by consumers and drivers of liking
(Elsevier Ltd, 2024-03) Jaeger SR; Dupas de Matos A; Frempomaa Oduro A; Hort J
Like other plant-based (PB) product categories, PB milk alternatives (PBMA) are in ascendency as part of the green consumer transition and a greater focus on personal health. However, consumption remains far below that for cow's milk, and among multiple barriers to uptake, inferior sensory properties is one problem, nutritional inadequacies another. While exceptions exist in both instances, a general need for improved products remains. The present research is situated in this nexus, and its primary aim was to contribute new consumer-centric insight regarding the sensory drivers of liking/disliking in the PBMA category. This was achieved through a central location study with adult New Zealanders (n = 143, not regular PBMA consumers) who tasted 18 different PBMA samples spanning a broad range of PB ingredients (soy, oat, coconut, almond, rice, cashew, peanut, macadamia, lentil, hemp, sesame) in different product types (single PB source, blends, barista style) with varying nutritional profiles. The most liked sample (6.5/9), which was made from soy, had the nutritional profile that most approximated cow's milk (3 g/100 mL protein), as well as a milky appearance and taste. Its mouthfeel was smooth, and this sensory characteristic was also paramount for barista-style PBMAs being well-liked (>5.9/9) regardless of their constituent PB ingredient (oat, almond, coconut). Opportunities for product innovation within this type of PBMA was identified including for using barista-style beyond hot beverages, as these samples received positive liking scores on average. The same applied to blends as multiple-source PBMAs can facilitate improved nutritional composition, and significant scope seemed to exist to identify more liked vs less liked PB ingredient combinations (e.g., almond/rice vs coconut/sesame). By identifying, through penalty/lift analysis that positive sensory drivers of PBMA liking span all sensory modalities (appearance, taste, flavour, texture and mouthfeel), it becomes easier to appreciate that products in this category are complex and challenging to optimise. A second minor research aim was focused on the modulating influence of PBMA consumption frequency on product liking and the sensory drivers of liking. The key result was a positive association between liking and higher consumption frequency, and greater appreciation of sweet, coconut, nutty and cereal/oaty characteristics of PBMAs.
The impact of heat-set milk protein gel textures modified by pH on circulating amino acid appearance and gastric function in healthy female adults: a randomised controlled trial.
(Royal Society of Chemistry, 2024-05-21) Milan AM; Menting GGA; Barnett MPG; Liu Y; McNabb WC; Roy NC; Hutchings SC; Mungure T; Weeks M; Li S; Hort J; Calder S; O'Grady G; Mithen RF
Modification of dairy proteins during processing impacts structural assemblies, influencing textural and nutritional properties of dairy products, and release and availability of amino acids during digestion. By modifying only pH, acid heat-set bovine dairy gels with divergent textural properties were developed to alter protein digestion. In vitro assay confirmed faster digestion of protein from a firm gel (pH 5.65) versus a soft gel (pH 6.55). We hypothesised that firm gel (FIRM-G; pH 5.6) would result in greater indispensable amino acid (IAA) appearance in circulation over 5 h and corresponding differences in gastric myoelectrical activity relative to soft gel (SOFT-G; pH 6.2). In a randomised, single-blind cross-over trial, healthy females (n = 20) consumed 150 g of each gel; plasma amino acid appearance was assessed over 5 hours. Iso-nitrogenous, iso-caloric gels were prepared from identical mixtures of bovine milk and whey protein concentrates; providing 17.7 g (FIRM-G) and 18.9 g (SOFT-G) of protein per serving. Secondary outcomes included gastric myoelectrical activity measured by body surface gastric mapping, glycaemic, triglyceridaemic, and subjective appetite and digestive responses. Overall plasma IAA (area under the curve) did not differ between gels. However, plasma IAA concentrations were higher, and increased more rapidly over time after SOFT-G compared with FIRM-G (1455 ± 53 versus 1350 ± 62 μmol L-1 at 30 min, p = 0.024). Similarly, total, branched-chain and dispensable amino acids were higher at 30 min with SOFT-G than FIRM-G (total: 3939 ± 97 versus 3702 ± 127 μmol L-1, p = 0.014; branched-chain: 677 ± 30 versus 619 ± 34 μmol L-1, p = 0.047; dispensable: 2334 ± 53 versus 2210 ± 76 μmol L-1, p = 0.032). All other measured parameters were similar between gels. Peak postprandial aminoacidaemia was higher and faster following ingestion of SOFT-G. Customised plasma amino acid appearance from dairy is achievable by altering gel coagulum structure using pH during processing and may have minimal influence on related postprandial responses, with implications for targeting food design for optimal health. The Clinical Trial Registry number is ACTRN12622001418763 (https://www.anzctr.org.au) registered November 7, 2022.
Thermal taster status: Temperature modulation of cortical response to sweetness perception
(Elsevier Inc, 2021-03-01) Eldeghaidy S; Yang Q; Abualait T; Williamson A-M; Hort J; Francis ST
Temperature is known to impact taste perception, but its reported effect on sweet taste perception in humans is inconsistent. Here, we assess whether thermal taste phenotype alters the temperature modulation of the brains' response to sweet samples and sweet taste perception. Participants (n = 24 balanced for thermal tasters (TT) and thermal non-tasters (TnT), 25 ± 7 years (mean ± SD), 10 males) underwent a thermal taste phenotyping session to study responses to cooling and warming of the tongue using a thermode. In a separate session, functional Magnetic Resonance Images (fMRI) were collected during sweet samples (87 mM sucrose) delivery at two temperatures ('cold' (5 ± 2 °C) and 'ambient' (20 ± 2 °C)) and the perceived sweetness intensity rated.In the phenotyping session, TTs had heightened perceptual temperature sensitivity to cooling and warming of the tongue using a thermode compared to TnTs. Although there was no significant effect during the fMRI session, the fMRI response to the 'cold sweet' sample across all participants was significantly increased in anterior insula/frontal operculum and mid-insula compared to the 'ambient sweet' sample, likely to reflect the perceptual difference to temperature rather than taste perception. TTs showed significantly increased fMRI activation patterns compared with TnTs and an interaction effect between thermal taster status and sample temperature, with TTs showing selectively greater cortical responses to 'cold sweet' samples compared to TnTs in somatosensory regions (SI and SII).The increase in cortical activation in somatosensory cortices to the 'cold sweet' stimulus correlated with perceptual ratings of temperature sensitivity to the thermode. The results highlight the importance of investigating the effects of thermal taster phenotype across a range of temperatures representing the reality of consumer consumption to beverages.
Understanding consumer acceptability of verjuice, its potential applications and sensory and chemical drivers of liking
(Elsevier Ltd, 2024-07) Dupas de Matos A; Reis MG; Maggs R; Hort J
The wine sector is working to add value, enhance sustainability and reduce waste, yet often creating new products with unknown consumer acceptance. Verjuice, juice made from discarded unripe thinned grapes, is an example. Whilst verjuice has various culinary uses, its versatility in beverages continues to expand. However, its sensory drivers of liking when consumed as a drink, and their potential impact on its application remain unclear. Chemical drivers of sensory characteristics are also unknown representing a critical knowledge gap needed to guide product innovation. This study aimed to provide new knowledge regarding consumer acceptability of verjuice by identifying its sensory drivers of liking as a beverage, evaluating its potential use in different applications and identifying chemical drivers of its sensory characteristics. New Zealand consumers (n = 93) evaluated 13 verjuice samples from different countries. Furthermore, verjuice familiarity and its influence on emotional response was investigated to determine likely future consumer engagement. Sweetness was the most positive driver of liking in verjuice overall, followed by fruity and floral notes, smoothness, and to a lesser extent citrus flavour. Consumers expressed varied preferences for verjuice’s sensory profile, with fruity, floral, and honey flavours driving beverage application, whilst winey and green apple notes were more associated with culinary scenarios. Some association between chemical parameters and sensory attributes were evident (e.g. sugars were highly associated with perceived sweetness, fruity, and floral attributes; these attributes also shared proximity with 1-hexanol and cyclohexanol). The general idea of verjuice elicited positive valence emotions, but consumers who were ‘not familiar’ felt more curious, and those ‘familiar’ felt happier and more satisfied. Findings highlight the potential to tailor verjuice for specific applications by understanding desired sensory profiles and related chemical parameters. Recognising the interplay between familiarity level and emotional response is crucial for positioning the product in the marketplace and fostering consumer engagement. Marketing initiatives are needed to increase verjuice familiarity and support product innovation, leading to increased product appeal.
Well-being Messaging for Mammalian Milks: A Scoping Review
(Frontiers Media S.A., 2021-10-22) Moradi S; Hort J; Roy NC
Having a holistic understanding of research on well-being messaging for milk is vital to allow the optimal communication of the association between milk consumption and various nutritional, physical, and psychological benefits to the consumer. This work is a unique interdisciplinary, scoping review of existing research on well-being messaging for milk. Well-being messages are ways to communicate the broad well-being benefits of specific products to the consumer through information on food content or statements that link a product with favourable components, functions, or well-being outcomes. Leveraging this broad definition, and by proposing a guiding theoretical model that considers well-being messaging as a form of communication, milk well-being messaging literature has been mapped across time, geographical locations, disciplines, and product types. Two hundred forty-six were records included in this review, of which 177 were empirical studies. Studies were disseminated between 1954 and 2019, with 54.9% published after 2011. Food, Agriculture, and Biological Sciences (N = 109), Nutrition and Dietetics (N = 78), and Medicine, Public Health, and Health Professions (N = 69) disciplines have attracted the most publications, with numbers generally increasing in most recent years. The majority of included non-empirical records (69.6%) provide lists of commercially available products carrying well-being messaging and/or regulations on the use of particular well-being messages for milk according to various legislative authorities. Most of the empirical studies were conducted in North America (N = 71), West Europe (N = 52), and Oceania (N = 22), and on plain (i.e., unflavoured) milk (N = 152). Whereas, most studied elements of well-being messaging for milk across time, i.e., message (N = 169), product (N = 141), receiver (N = 101), and context (N = 72) have seen an increasing number of studies in recent years; sender (N = 51) and medium (N = 27) have been even less studied in the past four years. A more detailed analysis of research trends in each element of well-being messaging is reported. The research highlights immediate and strategic knowledge gaps that need further attention from researchers and/or policymakers in order to improve the "messaging" of well-being benefits of milk consumption to the consumer.

Browsing by Author "Hort J"

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