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Article

Preliminary Study of the Effect of Knowledge and Sensory Expertise on Liking for Red Wines

Michael Bom Frøst, Ann C. Noble
Am J Enol Vitic.  2002  53: 275-284  ; DOI: 10.5344/ajev.2002.53.4.275
Michael Bom Frøst
Department of Dairy and Food Science, Royal Veterinary and Agricultural University, Rolighedsvej 30, 5, DK-1958 Frederiksberg, Denmark
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Ann C. Noble
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Abstract

Twelve inexpensive red wines were evaluated by descriptive analysis in which 12 trained judges rated 14 attributes in duplicate. Fifty-seven subjects rated liking for these wines on a 9-point hedonic scale. Subjects were segmented based on their level of wine knowledge (written test) and sensory expertise (sensory test) and on overall expertise, as estimated by the combined scores. Segments were formed by assigning lowest approximately 25%, medium approximately 50%, and highest approximately 25% to different groups. There was no correlation in performance between the two tests (Spearman’s ranked correlation = 0.057), indicating that sensory performance and wine knowledge are two distinctly different types of expertise and that one cannot be inferred from the other. The combined scores better reflect wine expertise, as true "wine experts" should possess knowledge in both domains. Significant differences in liking were found across all subjects. Based on the sensory expertise test, an overall significantly lower rating (p = 0.044) was found for the medium performance group. No overall significant differences in liking were found across groups based on performance in the wine knowledge test or the overall expertise. Despite this, significant differences in preference scores were found for several wines between groups. Individual differences in liking were significant, suggesting that individual preferences play a far larger role than mere level of wine knowledge or sensory expertise. External preference mapping was used to relate subjects liking to descriptive profiles. Although liking could not be modeled well from the sensory properties, some conclusions regarding liking for these subjects could still be made. Wines high in vanilla/oak aroma and high in either berry or canned vegetables aroma were liked significantly more than wines high in leather aroma and/or sour taste.

  • Wine
  • experts
  • novices
  • expertise testing
  • hedonic evaluation
  • liking rating
  • sensory descriptive analysis
  • preference mapping

Acknowledgments: The donation of wines by participating wineries (Beringer Wine Estates, E&J Gallo, Hess Collection, Kendall-Jackson, Meridian, and Stag’s Leap) and distributors (Leestown Company and Seagram Chateau & Estate Wines) is gratefully acknowledged. The efforts of David Gillespie, Timothy Milos, Marianne Swaney, Gregory Winter, Christopher Simons, and Matthew Meyer in conducting the descriptive analysis and of Seung Joo Lee for providing valuable assistance during consumer tests are greatly appreciated. Two anonymous reviewers are thanked for their helpful comments on an earlier version of this manuscript.

  • Copyright 2002 by the American Society for Enology and Viticulture

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Vol 53 Issue 4

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Preliminary Study of the Effect of Knowledge and Sensory Expertise on Liking for Red Wines
Michael Bom Frøst, Ann C. Noble
Am J Enol Vitic.  2002  53: 275-284  ; DOI: 10.5344/ajev.2002.53.4.275
Michael Bom Frøst
Department of Dairy and Food Science, Royal Veterinary and Agricultural University, Rolighedsvej 30, 5, DK-1958 Frederiksberg, Denmark
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Ann C. Noble
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Preliminary Study of the Effect of Knowledge and Sensory Expertise on Liking for Red Wines
Michael Bom Frøst, Ann C. Noble
Am J Enol Vitic.  2002  53: 275-284  ; DOI: 10.5344/ajev.2002.53.4.275
Michael Bom Frøst
Department of Dairy and Food Science, Royal Veterinary and Agricultural University, Rolighedsvej 30, 5, DK-1958 Frederiksberg, Denmark
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Ann C. Noble
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