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Magnesium enrichment and distribution in plants
D Courtois1, P Kastenmayer, J Clough
1Centre de Recherche Nestle-Tours, 101 avenue G. Eiffel, Notre Dame d'Oé-BP 9716, 37097 Tours Cedex 2, France. didier.courtois@rdto.nestle.com
Isotopes in Environmental and Health Studies
|January 9, 2004
Summary
This study labeled beans and wheat with stable isotope 25Mg for human nutrition research. Soybean and green beans efficiently accumulated 25Mg, showing potential for studying magnesium bioavailability.
Area of Science:
- Agricultural Science
- Nutritional Science
- Biochemistry
Background:
- Stable isotopes are crucial for tracing nutrient metabolism in human nutrition.
- Magnesium (Mg) bioavailability studies require reliable methods for labeling food sources.
Purpose of the Study:
- To label green beans, white beans, soybeans, and wheat with stable magnesium isotope (25Mg).
- To assess plant species efficiency in accumulating labeled Mg for bioavailability studies.
Main Methods:
- Greenhouse cultivation of selected plant species (soybeans, green beans, white beans, wheat).
- Labeling plants with stable isotope 25Mg.
- Analysis of 25Mg distribution within plant tissues, focusing on edible portions.
Main Results:
- Soybean and green bean demonstrated high efficiency in accumulating large amounts of edible biomass with minimal 25Mg loss.
- Significant redistribution of accumulated magnesium from other plant organs to seeds (beans/grains) was observed.
Conclusions:
- Soybean and green bean are suitable crops for producing 25Mg-labeled food for human nutrition research.
- Plant magnesium content in seeds can be influenced by internal magnesium redistribution processes.