Metabolism of selenium from soybean and egg products in rats

Journal Article · · J. Agric. Food Chem.; (United States)

DOI:https://doi.org/10.1021/jf00080a005· OSTI ID:7163954

Mason, A C; Browe, P J; Weaver, C M

The utilization of selenium (Se) from soy flour and eggs was evaluated by comparing whole-body absorption, retention, and tissue accumulation of /sup 75/Se in rats from radiolabeled test meals. Selenium-depleted male Sprague-Dawley rats were fed selenium-adequate repletion diets containing either egg, soy, combined egg/soy, or sodium selenite supplemented torula yeast as the protein sources. The first meal of the repletion period was radiolabeled. Intrinsically labeled egg protein was obtained by gavaging hens with (/sup 75/Se)selenomethionine or sodium (/sup 75/Se) selenite. Soy was intrinsically labeled via nutrient culture with sodium (/sup 75/Se)selenite (Na/sub 2//sup 75/SeO/sub 3/) or sodium (/sup 75/Se)selenate (Na/sub 2//sup 75/SeO/sub 4/). The combined egg/soy diet contained egg from hens gavaged with Na/sub 2//sup 75/SeO/sub 3/ and soy grown with Na/sub 2//sup 75/SeO/sub 3/. Torula yeast was extrinsically labeled by adding Na/sub 2//sup 75/SeO/sub 3/. A significantly greater amount of /sup 75/Se was absorbed and retained from egg than from soy protein. The /sup 75/Se from mixed egg/soy protein diets was absorbed and retained at a level intermediate to that of the egg or soy protein diets alone, suggesting the formation of a common pool of selenium within the intestinal tract.

• Research Organization: Purdue Univ. West Lafayette, IN (USA)
• OSTI ID: 7163954
• Journal Information: J. Agric. Food Chem.; (United States), Vol. 36:2
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
SELENIUM
BIOLOGICAL AVAILABILITY
METABOLISM
DIET
EGGS
NUTRITIONAL DEFICIENCY
RATS
SELENIUM 75
SOYBEANS
TRACER TECHNIQUES
ANIMALS
BETA DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
FOOD
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
MAMMALS
NUCLEI
PLANTS
RADIOISOTOPES
RODENTS
SELENIUM ISOTOPES
SEMIMETALS
VEGETABLES
VERTEBRATES
550501* - Metabolism- Tracer Techniques