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Grand Forks, North Dakota 58203


The purpose of this study is to validate the non-invasive tool, resonance Raman spectroscopy for assessing vegetable and fruit consumption.

Study summary:

This study will validate the use of resonance Raman spectroscopy to assess vegetable and fruit intake by performing a controlled feeding study during which volunteers will consume a provided diet with known amounts of carotenoids in the form of fruits and vegetables.


Inclusion Criteria: - Men and women aged 18 - 65 years - Weight stable (±5 lbs) for at least 2 months prior to the start of the study - Body mass index (BMI) between 19-30 kg/m2 - Willing to refrain from the use of nicotine and dietary supplements for the duration of the study - Willing to maintain baseline weight and physical activity levels Exclusion Criteria: 1. BMI greater than 30. 2. Gastrointestinal disorders, disease, or medication that affects carotenoid absorption or storage 3. Current smoker 4. Allergies or intolerances to foods to be utilized in the study 5. Consumption of greater than an average of 1 alcoholic drink/day for women and 2/day for men, use of nutritional/sports supplements (if unwilling to discontinue during the study) 6. Pregnancy or lactating



Primary Contact:

Principal Investigator
Lisa Jahns, PhD, RD
Agricultural Research Service, United States Department of Agriculture, Grand Forks Human Nutrition

Backup Contact:


Location Contact:

Grand Forks, North Dakota 58203
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: August 31, 2019

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