- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04248374
Fatty Acid Taste Rating With or Without Sour Taste Adaptation
Study Overview
Detailed Description
Participants will be asked to provide general demographic information such as gender, age and ethnicity. Their height and weight will be measured. Then, they will be trained with one of the sample solutions for intensity rating and adaptation to sour taste. There will be eight different sample solutions containing sucrose esters, xanthan gums to help fatty acids stay dissolved, and either acetic acid for sour compounds or, butyric acid, caproic acid, caprylic acid, capric acid, lauric acid, oleic acid, or linoleic acid for fatty acid taste. 2 g of each palmitic acid and stearic acids in solid form (their melting points are above body temperature) will also be placed in participants' mouth. All of these compounds are common in the commercial food supply.
The study procedure entails two sets of taste intensity ratings without (Test A) or with (Test B) sour taste adaptation. For test A, participants will taste one of the eight solutions or one of solid fatty acids, and rate its intensity before and after expectorating it. They will not swallow any samples and they will rinse their tongues thoroughly with 1% ethanol solution and water after expectorating the solution. They will consume one piece of unsalted cracker and rinse their tongues thoroughly again. Before moving to the next step, they will be asked to describe the taste quality of the sample solution they just tasted. They will repeat this procedure with the rest of the sample solutions.
For test B, participants will follow the same procedure of taste intensity ratings but with sour taste adaptation. For sour taste adaptation, the participants will hold sour taste solutions in their mouth for 5 seconds and rate its taste intensity. They will repeat rating the sourness until they rate its intensity as less than weak. When they feel the sour taste solution weak, they will taste one of the eight solutions and repeat the intensity rating with one of the sample solutions. After the taste intensity rating, the participants will be asked to describe the taste quality of the sample solution they just tasted. They will repeat this procedure with the rest of the sample solutions.
The participants will do both test A and B twice in random order on two separate days. Taste testing is expected to take 1 hour each day. They will receive $20 at the end of the two test days as compensation for their participation.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Indiana
-
West Lafayette, Indiana, United States, 47907
- Purdue University
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
-
Exclusion Criteria:
- taste disorder no allergy to alcohol
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: Fatty Acid Taste
Fatty acid taste without sour adaptation
|
|
Experimental: Fatty Acid Taste after sour adaptation
|
Taste intensity with and without sour adaptation
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Taste Intensity
Time Frame: 4 hours
|
two sets of taste intensity ratings without (Test A) or with (Test B) sour taste adaptation.
For test A, participants will taste one of the eight solutions or one of solid fatty acids, and rate its intensity before and after expectorating it.
|
4 hours
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1907022413
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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