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Oil Perception-Detection Thresholds for Varying Fatty Stimuli and Inter-individual Differences
Jaana M Heinze1,2,3,4, Andrew Costanzo4, Inga Baselier4
1Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen, Otfried Müller Str. 47, 72076 Tübingen, Germany.
Chemical Senses
|August 20, 2017
Summary
Humans can detect free fatty acids (FFAs) at lower concentrations than other fats. Higher FFA presence in foods lowers fat detection thresholds, improving perception of dietary fats.
Area of Science:
- Sensory science
- Human nutrition
- Food perception
Background:
- Human fat perception is primarily mediated by free fatty acids (FFAs).
- Dietary fats are predominantly consumed as triacylglycerols (TAGs), with low FFA concentrations.
Purpose of the Study:
- To investigate human perception of various fatty stimuli.
- To explore potential associations between the perception of different fat types.
- To determine fat detection thresholds for different fatty compounds.
Main Methods:
- Determined detection thresholds for four fatty stimuli: oleic acid (FFA), paraffin oil, canola oil (TAG-rich), and canola oil with added oleic acid (TAGs and FFAs).
- Assessed 30 healthy participants.
- Examined inter-individual differences in fat perception.
Main Results:
- Oleic acid (FFA) was perceived at significantly lower concentrations than other stimuli.
- Canola oil with oleic acid was detected at lower concentrations than canola oil alone.
- Participants sensitive to low FFA concentrations exhibited lower detection thresholds for TAG-rich oils.
Conclusions:
- Increased free fatty acid (FFA) concentration in stimuli correlates with lower individual fat detection thresholds.
- Individuals sensitive to FFAs demonstrate enhanced detection of dietary triacylglycerol (TAG)-rich fats.
