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Related Experiment Videos

Subthreshold olfactory stimulation can enhance sweetness.

D Labbe1, A Rytz, C Morgenegg

  • 1Nestlé Research Center, Department of Food Consumer Interacton, PO Box 44, CH-1000 Lausanne 26, Switzerland. david.labbe@rdls.nestle.com

Chemical Senses
|November 3, 2006
PubMed
Summary
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Subtle smells significantly alter sweetness perception. Even at low concentrations, certain odorants like ethyl butyrate can enhance sweetness, demonstrating a strong link between smell and taste.

Area of Science:

  • Food Science
  • Neuroscience
  • Sensory Science

Background:

  • Olfactory perception significantly influences taste experiences.
  • Odorants congruent with sweetness can modulate sweetness intensity.
  • The impact of subthreshold odorant concentrations on taste perception remains less understood.

Purpose of the Study:

  • To investigate the impact of olfactory stimuli at subthreshold concentrations on sweetness perception.
  • To compare the effects of ethyl butyrate and maltol on sweetness enhancement.
  • To determine if sweetness enhancement at subthreshold levels is concentration-dependent.

Main Methods:

  • Investigated 6 odorants at suprathreshold levels in sucrose solutions.
  • Selected ethyl butyrate and maltol based on their sweetness-enhancing properties.

Related Experiment Videos

  • Utilized a continuous liquid flow system to test odorants at subthreshold concentrations in sucrose solutions.

    • Main Results:

    • Ethyl butyrate, but not maltol, significantly enhanced sweetness at subthreshold concentrations.
    • Sweetness enhancement by ethyl butyrate at subthreshold levels was not proportional to its concentration.
    • Olfactory perception at subthreshold levels can modulate taste perception.

    Conclusions:

    • Olfactory cues at subthreshold concentrations play a significant role in modulating sweetness perception.
    • The relationship between odorant concentration and sweetness enhancement is complex and non-linear at subthreshold levels.
    • This research underscores the intricate interplay between smell and taste in flavor perception.