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  • 1
    Electronic Resource
    Electronic Resource
    Long-term consumption of beef extended with soy protein by men, women and children: I. Study design, nutrient intakes, and serum zinc levels (1987)
    Springer
    Plant foods for human nutrition 37 (1987), S. 341-359 
    Details
    ISSN: 1573-9104
    Keywords: soy protein ; mineral nutrition ; serum zinc ; zinc nutrition ; nutrient intake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effect of long-term consumption, under practical conditions, of beef extended with soy protein on serum zinc levels of men, women and children was studied. Fifty-two families were randomly assigned to consume for 180 days 1 of 7 beef products: all beef, beef extended with either soy isolate, soy concentrate or soy flour (20% reconstituted soy product, 80% beef), or beef extended with each of the 3 soy products fortified with 60 mg Fe and 25 mg Zn/100g protein. The beef product was consumed by the subjects as their principal source of protein for 1 meal a day (children 1–8 yrs) or 1–2 meals a day (11 per week) for adult men and women. A control group consumed their usual self-selected diet. Diet records (4-day) of all foods and beverages consumed by the subjects were obtained pre-study and 63±7 and 126±7 days for calculation of nutrient intakes. No deleterious effects were found on the serum zinc levels when subjects consumed beef extended with soy protein for 180 days.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01092210
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Long-term consumption of beef extended with soy protein by children, women and men: III. Iron absorption by adult men (1987)
    Springer
    Plant foods for human nutrition 37 (1987), S. 377-389 
    Details
    ISSN: 1573-9104
    Keywords: iron status ; iron nutrition ; soy protein ; iron absorption ; mineral nutrition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Forty-nine ostensibly healthy men consumed either patties of all-beef or beef extended with soy-isolate, -concentrate or -flour as the principal protein source in 1 to 2 meals daily for 180 days. Iron status was monitored by absorption of radioiron from a reference dose of ferrous ascorbate and by serum ferritin concentration. In addition, nonheme iron absorption from a test meal of the respective beef pattie consumed for the 180 days was estimated by the extrinsic tag procedure. There was no detrimental effect on iron stores as indexed by reference ferrous ascorbate absorption or serum ferritin concentration. Absorption of nonheme iron from the test meals was low except for individuals having indices of low iron stores. When adjusted for the effect of level of iron stores the relative absorption of nonheme iron from soy-isolate and -flour containing meals was greater than from the all-beef meal, indicating marked differences in the effect on iron absorption by different soy products. Consumption of soy-extended beef should have no detrimental effect on iron status of adult men if consumed in mixed diets at the level used in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01092212
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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