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Caffeine as a flavor additive in soft-drinks

Keast, Russell and Riddell, Lynette 2007, Caffeine as a flavor additive in soft-drinks, Appetite, vol. 49, no. 1, pp. 255-259.

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Title Caffeine as a flavor additive in soft-drinks
Author(s) Keast, Russell
Riddell, Lynette
Journal name Appetite
Volume number 49
Issue number 1
Start page 255
End page 259
Publisher Elsevier B.V.
Place of publication Amsterdam, The Netherlands
Publication date 2007-07
ISSN 0195-6663
1095-8304
Keyword(s) caffeine
soft-drink
flavor
threshold
psychophysics
obesity
Summary Over 60% of soft-drinks sold in the United States contain caffeine, a mildly addictive psycho-active chemical, as a flavor additive. Using sweeteners as controls, we assessed whether caffeine has flavor activity in a cola soft-drink. A forced-choice triangle discrimination methodology was used to determine detection thresholds of caffeine in sweeteners and a cola beverage. The subjects (n=30, 28 female, 23±4 years old) were trained tasters and completed over 1600 discrimination tests during the study. The mean detection thresholds for caffeine in the sweet solutions were: 0.333±0.1 mM sucrose; 0.467±0.29 mM aspartame; 0.462±0.3 mM sucralose, well below the concentration in common cola beverages (0.55–0.67 mM). A fixed concentration of caffeine, corresponding to the concentration of caffeine in a common cola beverage (0.67 mM) was added to the sweeteners and a non-caffeinated cola beverage. Subjects could distinguish between caffeinated and non-caffeinated sweeteners (p<0.001), but all subjects failed to distinguish between caffeinated and non-caffeinated cola beverage (p=1.0). Caffeine has no flavor activity in soft-drinks yet will induce a physiologic and psychologic desire to consume the drink.
Language eng
Field of Research 170112 Sensory Processes, Perception and Performance
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Elsevier Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30003641

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.