Clinical trials: Bioavailability of Carotenoids
Beta-carotene Bioavailability, Vitamin A Deficiency
Effect of SNPs in the BCMO1 Enzyme
Summary: Chronic intake of foods low in vitamin A (retinol) and provitamin A forming an unbalanced diet with little variety is common in young individuals in the United Kingdom (UK) population and can lead to subclinical…
- Trial name
- BETASNP2 (NCT02276014)
- Testing
- Beta-carotene
- Where
- United Kingdom
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Newcastle-upon-Tyne Hospitals NHS Trust
Biological Availability of Vitamins and Micronutrients
Effect of Genetic Variants on Fat-soluble Vitamin Bioavailability
The aim was to identify minor genetic variations (single nucleotide polymorphisms) that explain the interindividual variability in bioavailability of fat soluble micronutrients (fat soluble vitamins and carotenoids).
- Trial name
- VITAGENES (NCT02100774)
- Where
- France
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
Vitamin A Deficiency
Impact of Consumption of Orange-fleshed Sweet Potatoes on the Vitamin A Status of Bangladeshi Women of Reproductive Age
The primary purpose of this study is to determine whether daily consumption of orange-fleshed sweet potatoes increases the vitamin A status of Bangladeshi women of reproductive age.
- Trial name
- NCT00453648
- Testing
- White-fleshed sweet potatoes, Orange-fleshed sweet potatoes (boiled), Orange-fleshed sweet potatoes (fried)
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Healthy, Ileostomy
The STOVITA Study - Bioefficacy of Beta-Carotene in Oil and in a Mixed Diet in Ileostomy Patients
A controlled dietary intervention study will be carried out based on the stable isotope method the investigators have developed to quantify both the absorption of beta-carotene and its bioconversion to retinol in oil and in a…
- Trial name
- NCT00128804
- Testing
- absorption and conversion of beta-carotene in human gastrointestinal (GI) tract
- Where
- Netherlands
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Radboud University Medical Center
Carotenoid and Flavonoid Absorption
Carotenoid and Flavonoid Absorption From Red and Tangerine-Type Tomatoes
Eating a diet rich in tomatoes has been associated with decreased risk for a variety of diseases. Tomatoes contain red-colored lycopene (one type of pigment in the class of pigments called carotenoids), which has been associated…
- Trial name
- NCT01696773
- Testing
- Tangerine tomato juice, Red tomato juice
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Ohio State University
Cardiovascular Disease
Bioavailability of Carotenoids Added Into Processed Foods
Carotenoids are a family of pigments found abundantly in fruits and vegetables. They are responsible for the colour of many fruits and vegetables such as tomatoes, melon, peppers and orange coloured fruits and vegetables.
- Trial name
- CAROTFoods (NCT02246985)
- Testing
- Control, Vegetable bread only, Plain bread with vegetable mayonnaise
- Where
- United Kingdom
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Aberdeen
Biological Availability, Carotenoids
Bioavailability of Carotenoids From Orange Juice in a Cross-over Study in Healthy Subjects.
Commercially available fruit juices are obtained after applying industrial technologies to preserve and extend the shelf-life by inactivation of microorganism and enzymes. These are traditional thermal treatment (eg.
- Conditions
- Biological Availability, Carotenoids, Lutein, Humans
- Trial name
- NCT04744233
- Testing
- Orange juice
- Where
- 2 sites in Spain
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición
Vitamin A Status
Bioavailability of Yellow Maize Carotenoids in Humans
The study hypothesis is that high ß-C yellow maize can provide vitamin A efficiently. list item one ß-C in yellow maize The study will use stable isotope labeled high ß-C yellow maize and vitamin A in a well-nourished population…
- Trial name
- NCT00636038
- Testing
- corn beta-carotene
- Where
- Zimbabwe
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Tufts University
Biological Availability
Bioavailability of Carotenoids Present in Mamey Sapote (Pouteria Sapota (Jacq.) H. E. Moore & Stearn) Fruit
The goal of the study is to determine if mamey sapote fruit, rich in rare potentially provitamin A keto-carotenoids, is a good source of vitamin A in humans.
- Trial name
- NCT03873909
- Testing
- Fruit Smoothie, Matrix-Free Shake
- Where
- 2 sites in Costa Rica, Germany
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- University of Hohenheim
Healthy
Bioavailability of Golden Rice Carotenoids in Humans
This investigation protocol uses an isotope reference method to evaluate bioavailability of ß-C in rice and its bioconversion to vitamin A.
- Trial name
- NCT00680355
- Testing
- golden rice, corn oil 0g, corn oil 10g
- Where
- United States
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Tufts University