Intake of phytate and its effect on the bioavailability of zinc (Zn) and calcium in Chinese preschool children
Conference
·
· FASEB Journal (Federation of American Societies for Experimental Biology); (United States)
OSTI ID:5240098
- Beijing Pediatric Research Inst. (China)
A metabolic balance experiment of 2 periods was conducted. In period 1, foods were eaten as usual. Intakes of phytic acid, Zn and calcium were 538 {plus minus} 18 mg/day, 829 {plus minus} 0.4 mg/day and 341 {plus minus} 8 mg/day respectively. The molar ratio of phytic acid to Zn and calcium were 14 {plus minus} 2% and 29 {plus minus} 9%. According to the usual diet of children in rural areas of China, products of corn and soybean were added in period 2. Before period 2, subjects had been adapted to the diet for one week. Intakes of phytic acid, Zn and calcium were 826 {plus minus} 26 mg/day, 7.7 {plus minus} 0.16 mg/day and 343 {plus minus} 6 mg/day respectively. The molar ratios of phytic acid to Zn and calcium were 10.64 and 0.14. The absorption of Zn and calcium were 13 {plus minus} 2% and 16 {plus minus} 2%. In summary intake of Chinese children was 80% of US RDA and calcium was 43% of US RDA. The absorption of Zn and calcium were low. Phytic acid was one of the factors affecting the bioavailability of calcium while inhibitory effect of phytic acid could not be found on Zn absorption in current dietary condition of Chinese children.
- OSTI ID:
- 5240098
- Report Number(s):
- CONF-9104107--
- Conference Information:
- Journal Name: FASEB Journal (Federation of American Societies for Experimental Biology); (United States) Journal Volume: 5:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
AGE GROUPS
ALKALINE EARTH METALS
ASIA
BIOLOGICAL AVAILABILITY
BIOLOGICAL EFFECTS
CALCIUM
CHILDREN
CHINA
ELEMENTS
ESTERS
INTESTINAL ABSORPTION
METABOLISM
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORIC ACID ESTERS
PHYTIC ACID
UPTAKE
ZINC
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
AGE GROUPS
ALKALINE EARTH METALS
ASIA
BIOLOGICAL AVAILABILITY
BIOLOGICAL EFFECTS
CALCIUM
CHILDREN
CHINA
ELEMENTS
ESTERS
INTESTINAL ABSORPTION
METABOLISM
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORIC ACID ESTERS
PHYTIC ACID
UPTAKE
ZINC