skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The effect of soy products in the diet on retention of non-heme iron from radiolabeled test meals fed to marginally iron-deficient young rats

Abstract

Diets based either on casein or soy products and containing about 25 ppm iron were fed to weanling rats for 13 days. Rats were fasted overnight and fed a {sup 59}Fe-radiolabeled casein test meal the morning of day 14. On day 21 less {sup 59}Fe was retained by rats fed various diets based on selected soy products than by rats fed the casein-based diet. A similar adverse effect of diet components on {sup 59}Fe retention from a casein test meal was observed for lactalbumin and for psyllium husk. No adverse effect of diet on {sup 59}Fe retention was observed for the fiber of soy cotyledons or for rapeseed protein concentrate. For a commercial soy protein isolated (SPI) fed throughout the 21-day experiment, the adverse effect of diet on {sup 59}Fe retention was observed to the sum of the effect of dietary SPI previous to the {sup 59}Fe-radiolabeled casein test meal fed on day 14 and the effect of dietary SPI subsequent to the casein test meal. An effect of dietary soy products on {sup 59}Fe retention from a casein test meal was not observed with diets containing higher iron levels (83 ppm) or when diets were fed for a longermore » period prior to the test meal (56 days). The present work shows that in some circumstances the concept of iron bioavailability must be expanded to include not only the influence of meal composition, but also the influence of diet previous to and subsequent to a meal.« less

Authors:
Publication Date:
Research Org.:
Illinois Univ., Urbana, IL (USA)
OSTI Identifier:
6974557
Resource Type:
Miscellaneous
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; CASEIN; INGESTION; IRON 59; RETENTION; SOYBEANS; ANIMAL FEEDS; BIOLOGICAL AVAILABILITY; DIET; IRON COMPOUNDS; LABELLED COMPOUNDS; PHYSIOLOGY; RATS; ANIMALS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; EVEN-ODD NUCLEI; FOOD; INTAKE; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; MAMMALS; NUCLEI; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PLANTS; PROTEINS; RADIOISOTOPES; RODENTS; TRANSITION ELEMENT COMPOUNDS; VEGETABLES; VERTEBRATES; 551001* - Physiological Systems- Tracer Techniques

Citation Formats

Thompson, D B. The effect of soy products in the diet on retention of non-heme iron from radiolabeled test meals fed to marginally iron-deficient young rats. United States: N. p., 1984. Web.
Thompson, D B. The effect of soy products in the diet on retention of non-heme iron from radiolabeled test meals fed to marginally iron-deficient young rats. United States.
Thompson, D B. 1984. "The effect of soy products in the diet on retention of non-heme iron from radiolabeled test meals fed to marginally iron-deficient young rats". United States.
@article{osti_6974557,
title = {The effect of soy products in the diet on retention of non-heme iron from radiolabeled test meals fed to marginally iron-deficient young rats},
author = {Thompson, D B},
abstractNote = {Diets based either on casein or soy products and containing about 25 ppm iron were fed to weanling rats for 13 days. Rats were fasted overnight and fed a {sup 59}Fe-radiolabeled casein test meal the morning of day 14. On day 21 less {sup 59}Fe was retained by rats fed various diets based on selected soy products than by rats fed the casein-based diet. A similar adverse effect of diet components on {sup 59}Fe retention from a casein test meal was observed for lactalbumin and for psyllium husk. No adverse effect of diet on {sup 59}Fe retention was observed for the fiber of soy cotyledons or for rapeseed protein concentrate. For a commercial soy protein isolated (SPI) fed throughout the 21-day experiment, the adverse effect of diet on {sup 59}Fe retention was observed to the sum of the effect of dietary SPI previous to the {sup 59}Fe-radiolabeled casein test meal fed on day 14 and the effect of dietary SPI subsequent to the casein test meal. An effect of dietary soy products on {sup 59}Fe retention from a casein test meal was not observed with diets containing higher iron levels (83 ppm) or when diets were fed for a longer period prior to the test meal (56 days). The present work shows that in some circumstances the concept of iron bioavailability must be expanded to include not only the influence of meal composition, but also the influence of diet previous to and subsequent to a meal.},
doi = {},
url = {https://www.osti.gov/biblio/6974557}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}

Miscellaneous:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item.

Save / Share: