Healthy
Conditions
Brief summary
One of the newest strategies to combat micronutrient deficiencies is the biofortification of staple foods, where higher levels of minerals are obtained through breeding of staple crops. The aim of this study is to evaluate zinc absorption from a rice biofortified with zinc when compared with a control rice fortified with zinc just before consumption.
Interventions
OTHERRice extrinsically fortified with zinc
1.12 mg zinc per meal
OTHERZinc biofortified rice
1.12 mg zinc per meal
Sponsors
University of Zurich
Swiss Federal Institute of Technology
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
* Male or female of 18 to 45 years old * Body Mass Index in the range of 19 to 25 * No mineral and vitamin supplements two weeks prior to the study and during the whole duration of the study
Exclusion criteria
* Any metabolic, gastrointestinal or chronic disease (according to the subjects own statement) * Long-term medication during the whole study (except for contraceptives) * Pregnancy * Lactation * Intention to become pregnant during the course of the study * Lack of safe contraception * Consumption of mineral and vitamin supplements within 2 weeks prior to 1st - Earlier participation in any nutrition study using Zn stable isotopes as well as participation in any other clinical study within the last 30 days and during this study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Fractional absorption of zinc | 33 days | Fractional absorption of zinc is estimated by using the double isotope tracer ratio technique by administering 67Zn as oral and 70Zn as intravenous stable isotopes.The urinary enrichment with both isotopes is measured in a spot urine sample by inductively coupled plasma mass spectrometry. |
Countries
Switzerland
Outcome results
None listed