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Ares G, Jaeger SR, Bava CM, Chheang SL, Jin D, Gimenez A, Vidal L, Fiszman SM, Varela P. CATA questions for sensory product characterization: Raising awareness of biases. Food Qual Prefer 2013. [DOI: 10.1016/j.foodqual.2013.04.012] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jaeger SR, Mielby LH, Heymann H, Jia Y, Frøst MB. Analysing conjoint data with OLS and PLS regression: a case study with wine. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:3682-3690. [PMID: 23629635 DOI: 10.1002/jsfa.6194] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Revised: 04/18/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND This paper presents a case study with wine where two statistical methods for the analysis of rating-based conjoint analysis data were applied. Traditionally, ordinary least squares (OLS) regression is used to estimate the relative importance of the experimental factors and the part-worth utilities of factor levels. Partial least squares (PLS) regression, which is a popular tool in sensory and consumer science, can also be used for the analysis of interval-level conjoint data. RESULTS Using conjoint analysis, purchase intentions for Californian red and white wine were obtained from a convenience sample of young US adults (n ≈ 250). OLS and PLS regression uncovered the same systematic patterns in the data: negative utility associated with more expensive wine, and positive utility associated with famous wine regions. While OLS regression provided more accessible top-line results, an advantage of PLS regression was the graphical format of results. This provided easy insight to individual differences in the importance attached to the factors driving purchase intention. CONCLUSION OLS and PLS regression can complement each other in the analysis of interval-level conjoint data. Dual analysis can help to ensure that the right insights are drawn from the study and communicated to internal/external clients. It may also facilitate communication within project teams.
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Jaeger SR, Giacalone D, Roigard CM, Pineau B, Vidal L, Giménez A, Frøst MB, Ares G. Investigation of bias of hedonic scores when co-eliciting product attribute information using CATA questions. Food Qual Prefer 2013. [DOI: 10.1016/j.foodqual.2013.06.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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104
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Altisent R, Jaeger SR, Johnston JW, Harker FR. Injection of Flavor Essences into Fruit Pieces: A New Approach for Exploring Consumer Preferences for Novel Flavors of Apple Fruit. J SENS STUD 2013. [DOI: 10.1111/joss.12066] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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105
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Jaeger SR, Chheang SL, Yin J, Bava CM, Gimenez A, Vidal L, Ares G. Check-all-that-apply (CATA) responses elicited by consumers: Within-assessor reproducibility and stability of sensory product characterizations. Food Qual Prefer 2013. [DOI: 10.1016/j.foodqual.2013.04.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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106
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Jaeger SR, McRae JF, Bava CM, Beresford MK, Hunter D, Jia Y, Chheang SL, Jin D, Peng M, Gamble JC, Atkinson KR, Axten LG, Paisley AG, Tooman L, Pineau B, Rouse SA, Newcomb RD. A Mendelian trait for olfactory sensitivity affects odor experience and food selection. Curr Biol 2013; 23:1601-5. [PMID: 23910657 DOI: 10.1016/j.cub.2013.07.030] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/27/2013] [Accepted: 07/03/2013] [Indexed: 11/25/2022]
Abstract
Humans vary in acuity to many odors [1-4], with variation within olfactory receptor (OR) genes contributing to these differences [5-9]. How such variation also affects odor experience and food selection remains uncertain [10], given that such effects occur for taste [11-15]. Here we investigate β-ionone, which shows extreme sensitivity differences [4, 16, 17]. β-ionone is a key aroma in foods and beverages [18-21] and is added to products in order to give a pleasant floral note [22, 23]. Genome-wide and in vitro assays demonstrate rs6591536 as the causal variant for β-ionone odor sensitivity. rs6591536 encodes a N183D substitution in the second extracellular loop of OR5A1 and explains >96% of the observed phenotypic variation, resembling a monogenic Mendelian trait. Individuals carrying genotypes for β-ionone sensitivity can more easily differentiate between food and beverage stimuli with and without added β-ionone. Sensitive individuals typically describe β-ionone in foods and beverages as "fragrant" and "floral," whereas less-sensitive individuals describe these stimuli differently. rs6591536 genotype also influences emotional associations and explains differences in food and product choices. These studies demonstrate that an OR variant that influences olfactory sensitivity can affect how people experience and respond to foods, beverages, and other products.
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Espley RV, Bovy A, Bava C, Jaeger SR, Tomes S, Norling C, Crawford J, Rowan D, McGhie TK, Brendolise C, Putterill J, Schouten HJ, Hellens RP, Allan AC. Analysis of genetically modified red-fleshed apples reveals effects on growth and consumer attributes. PLANT BIOTECHNOLOGY JOURNAL 2013; 11:408-19. [PMID: 23130849 DOI: 10.1111/pbi.12017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Revised: 09/12/2012] [Accepted: 09/25/2012] [Indexed: 05/03/2023]
Abstract
Consumers of whole foods, such as fruits, demand consistent high quality and seek varieties with enhanced health properties, convenience or novel taste. We have raised the polyphenolic content of apple by genetic engineering of the anthocyanin pathway using the apple transcription factor MYB10. These apples have very high concentrations of foliar, flower and fruit anthocyanins, especially in the fruit peel. Independent lines were examined for impacts on tree growth, photosynthesis and fruit characteristics. Fruit were analysed for changes in metabolite and transcript levels. Fruit were also used in taste trials to study the consumer perception of such a novel apple. No negative taste attributes were associated with the elevated anthocyanins. Modification with this one gene provides near isogenic material and allows us to examine the effects on an established cultivar, with a view to enhancing consumer appeal independently of other fruit qualities.
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Ares G, Jaeger SR. Check-all-that-apply questions: Influence of attribute order on sensory product characterization. Food Qual Prefer 2013. [DOI: 10.1016/j.foodqual.2012.08.016] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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109
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Hein KA, Hamid N, Jaeger SR, Delahunty CM. Effects of evoked consumption contexts on hedonic ratings: A case study with two fruit beverages. Food Qual Prefer 2012. [DOI: 10.1016/j.foodqual.2012.02.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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110
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Peng M, Jaeger SR, Hautus MJ. Determining odour detection thresholds: Incorporating a method-independent definition into the implementation of ASTM E679. Food Qual Prefer 2012. [DOI: 10.1016/j.foodqual.2012.02.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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111
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McRae JF, Mainland JD, Jaeger SR, Adipietro KA, Matsunami H, Newcomb RD. Genetic variation in the odorant receptor OR2J3 is associated with the ability to detect the "grassy" smelling odor, cis-3-hexen-1-ol. Chem Senses 2012; 37:585-93. [PMID: 22714804 DOI: 10.1093/chemse/bjs049] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The ability to detect many odors varies among individuals; however, the contribution of genotype to this variation has been assessed for relatively few compounds. We have identified a genetic basis for the ability to detect the flavor compound cis-3-hexen-1-ol. This compound is typically described as "green grassy" or the smell of "cut grass," with variation in the ability to detect it linked to single nucleotide polymorphisms (SNPs) in a region on human chromosome 6 containing 25 odorant receptor genes. We have sequenced the coding regions of all 25 receptors across an ethnically mixed population of 52 individuals and identified 147 sequence variants. We tested these for association with cis-3-hexen-1-ol detection thresholds and found 3 strongly associated SNPs, including one found in a functional odorant receptor (rs28757581 in OR2J3). In vitro assays of 13 odorant receptors from the region identified 3 receptors that could respond to cis-3-hexen-1-ol, including OR2J3. This gene contained 5 predicted haplotypes across the 52 individuals. We tested all 5 haplotypes in vitro and several amino acid substitutions on their own, such as rs28757581 (T113A). Two amino acid substitutions, T113A and R226Q, impaired the ability of OR2J3 to respond to cis-3-hexen-1-ol, and together these two substitutions effectively abolished the response to the compound. The haplotype of OR2J3 containing both T113A and R226Q explains 26.4% of the variation in cis-3-hexen-1-ol detection in our study cohort. Further research is required to examine whether OR2J3 haplotypes explain variation in perceived flavor experience and the consumption of foods containing cis-3-hexen-1-ol.
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Jaeger SR, Harker R, Triggs CM, Gunson A, Campbell RL, Jackman R, Requejo-Jackman C. Determining Consumer Purchase Intentions: The Importance of Dry Matter, Size, and Price of Kiwifruit. J Food Sci 2011; 76:S177-84. [DOI: 10.1111/j.1750-3841.2011.02084.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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113
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Hein KA, Hamid N, Jaeger SR, Delahunty CM. Application of a written scenario to evoke a consumption context in a laboratory setting: Effects on hedonic ratings. Food Qual Prefer 2010. [DOI: 10.1016/j.foodqual.2009.10.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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114
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Jaeger SR, Danaher PJ, Brodie RJ. Consumption decisions made in restaurants: The case of wine selection. Food Qual Prefer 2010. [DOI: 10.1016/j.foodqual.2009.08.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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115
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Jaeger SR, McRae JF, Salzman Y, Williams L, Newcomb RD. A preliminary investigation into a genetic basis for cis-3-hexen-1-ol odour perception: A genome-wide association approach. Food Qual Prefer 2010. [DOI: 10.1016/j.foodqual.2009.08.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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116
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Jaeger SR, Bava CM. Fruit consumption among people living in a high deprivation New Zealand neighbourhood. Aust N Z J Public Health 2009; 33:471-6. [DOI: 10.1111/j.1753-6405.2009.00432.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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117
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Hein KA, Jaeger SR, Tom Carr B, Delahunty CM. Comparison of five common acceptance and preference methods. Food Qual Prefer 2008. [DOI: 10.1016/j.foodqual.2008.06.001] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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118
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Jaeger SR, Jørgensen AS, Aaslyng MD, Bredie WL. Best–worst scaling: An introduction and initial comparison with monadic rating for preference elicitation with food products. Food Qual Prefer 2008. [DOI: 10.1016/j.foodqual.2008.03.002] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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119
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Bava CM, Jaeger SR, Park J. Constraints upon food provisioning practices in ‘busy’ women's lives: Trade-offs which demand convenience. Appetite 2008; 50:486-98. [DOI: 10.1016/j.appet.2007.10.005] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2007] [Revised: 08/10/2007] [Accepted: 10/19/2007] [Indexed: 11/25/2022]
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Yee WM, Traill WB, Lusk JL, Jaeger SR, House LO, Moore M, Morrow J'B, Valli C. Determinants of consumers' willingness to accept GM foods. ACTA ACUST UNITED AC 2008. [DOI: 10.1504/ijbt.2008.018356] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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121
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Hollebeek LD, Jaeger SR, Brodie RJ, Balemi A. The influence of involvement on purchase intention for new world wine. Food Qual Prefer 2007. [DOI: 10.1016/j.foodqual.2007.04.007] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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122
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Jaeger SR, Cardello AV. A construct analysis of meal convenience applied to military foods. Appetite 2007; 49:231-9. [PMID: 17399852 DOI: 10.1016/j.appet.2007.02.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2006] [Revised: 01/03/2007] [Indexed: 10/23/2022]
Abstract
The present research investigates the concept of food convenience within the institutional framework of military feeding. The approach views food-related convenience in terms of two broad dimensions: "type of convenience" and "timing of convenience." A discrete choice experiment was conducted with US military personnel (n=179) regarding their perceptions of the (in)convenience associated with the use and consumption of low-preparation, all-in-one, military meals (MREs-meals, ready-to-eat). The obtained data strongly suggest that perceived (in)convenience, time and effort are separate constructs. A food provisioning process perspective was captured in the "timing of convenience" dimension, and the contribution of different stages in the consumption process to the perceived convenience of the meal situation was empirically demonstrated. The latter result has important implications for the study of food convenience outside this specific population and context. As opposed to the product perspective that is currently predominant in the literature, it demonstrates the necessity of adopting a meal perspective in analysing food-related convenience.
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Bruce Traill W, Yee WMS, Lusk JL, Jaeger SR, House LO, Morrow Jr JL, Valli C, Moore M. Perceptions of the risks and benefits of genetically-modified foods and their influence on willingness to consume. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/16507540600733900] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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124
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125
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Jaeger SR, Lusk JL, House LO, Valli C, Moore M, Morrow B, Traill W. The use of non-hypothetical experimental markets for measuring the acceptance of genetically modified foods. Food Qual Prefer 2004. [DOI: 10.1016/j.foodqual.2004.04.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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