Absorption and biological half-life in humans of intrinsic and extrinsic sup 54 Mn tracers from foods of plant origin

Journal Article · Wed May 01 04:00:00 EDT 1991 · Journal of Nutrition; (USA)

OSTI ID:5768975

Johnson, P E; Lykken, G I; Korynta, E D ^[1]

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1. Grand Forks Human Nutrition Research Center, ND (USA)

Absorption and biological half-life of {sup 54}Mn were measured in adult men and women fed foods labeled intrinsically or extrinsically with {sup 54}Mn. Each subject consumed a series of three test meals consisting of a food labeled intrinsically, a food labeled extrinsically or MnCl{sub 2} (control) served in random order. The foods tested were lettuce, spinach, wheat and sunflower seeds. Lettuce meals and their controls contained 9.65 mumol Mn; other meals contained 22.50 mumol Mn. In addition to the test food or MnCl{sub 2}, each meal consisted of vegetable oil (5 g), salt (NaCl, 0.15 g) and crackers (10 g), which provided 0.55 mumol Mn. There were no differences in percentage of Mn absorption or biological half-life of {sup 54}Mn for any of the intrinsically/extrinsically labeled food pairs. Absorption of {sup 54}Mn from MnCl{sub 2} (8.90%) was greater than from lettuce (5.20%), spinach (3.81%), wheat (2.16%) or sunflower seeds (1.71%), but the biological half-life did not vary with the source of Mn. Absorption of {sup 54}Mn from lettuce was significantly (P less than 0.05) greater than from wheat or sunflower seeds. Although the Mn dose in the test meal was less for lettuce than for the other foods, there was no difference in Mn absorption from MnCl{sub 2} between the subjects fed lettuce and subjects fed other foods. There was no correlation of either {sup 54}Mn absorption or biological half-life with whole blood or plasma Mn.

• OSTI ID: 5768975
• Journal Information: Journal of Nutrition; (USA), Journal Name: Journal of Nutrition; (USA) Vol. 121:5; ISSN 0022-3166; ISSN JONUA
• Country of Publication: United States
• Language: English

Related Subjects

550501* -- Metabolism-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ABSORPTION
ANIMALS
BETA DECAY RADIOISOTOPES
BIOLOGICAL HALF-LIFE
CEREALS
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
FOOD
GRAMINEAE
INTERMEDIATE MASS NUCLEI
INTESTINAL ABSORPTION
ISOTOPE APPLICATIONS
ISOTOPES
LETTUCE
LILIOPSIDA
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MAMMALS
MAN
MANGANESE
MANGANESE 54
MANGANESE ISOTOPES
METABOLISM
METALS
NUCLEI
ODD-ODD NUCLEI
PLANTS
PRIMATES
RADIOISOTOPES
SEEDS
SPINACH
SUNFLOWERS
TRACER TECHNIQUES
TRANSITION ELEMENTS
UPTAKE
VEGETABLES
VERTEBRATES
WHEAT