Document Detail

Dietary tin intake and association with canned food consumption in Japanese preschool children.
MedLine Citation:
PMID:  23108579     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: Dietary intake of tin has seldom been studied in children although they probably have a high intake. This study was initiated to investigate dietary tin intake (Sn-D) of children in Japan.
METHODS: In this study, 24-h food duplicate samples were collected from 296 preschool children in Miyagi prefecture, Japan. Sn in the samples were analyzed by inductively coupled-plasma mass spectrometry, after homogenization and wet digestion.
RESULTS: Sn-D by the children was low, with 4.2 μg/day as a median. The distribution was however wide, from 0.4 μg/day up to >3 μg/day. Canned foods were the major dietary Sn source, whereas rice contributed essentially little. Sn-D among canned food consumers was 30.2 μg/day as a geometric mean (10.6 μg/day as a median), whereas Sn-D among the non-consumers of canned foods was distributed log-normally, with 3.3 μg/day as a geometric mean (2.5 μg/day as a median). Sn levels in urine did not differ between children who consumed canned foods on the day previous to urine collection and those who did not. The Sn-D was far below the provisional tolerable weekly intake (14 mg/kg body weight/week) set by the 2001 Joint FAO/WHO Expert Committee. Nevertheless, children took more Sn than adults when compared on a body-weight basis.
CONCLUSIONS: Canned foods were the major source of dietary Sn intake for preschool children studied. Thus, median Sn-D was higher for the canned food consumers (10.6 μg/day) than for non-consumers of canned foods (2.5 μg/day). Sn-D by canned food-consuming children was, however, substantially lower than the provisional tolerable weekly intake. No difference was detected in Sn levels in urine between canned food-consuming and non-consuming children.
Shinichiro Shimbo; Takao Watanabe; Haruo Nakatsuka; Kozue Yaginuma-Sakurai; Masayuki Ikeda
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-10-30
Journal Detail:
Title:  Environmental health and preventive medicine     Volume:  18     ISSN:  1347-4715     ISO Abbreviation:  Environ Health Prev Med     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-05-10     Completed Date:  2013-11-29     Revised Date:  2014-05-08    
Medline Journal Info:
Nlm Unique ID:  9609642     Medline TA:  Environ Health Prev Med     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  230-6     Citation Subset:  IM    
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MeSH Terms
Child, Preschool
Food Contamination / analysis*
Food, Preserved / analysis*
Mass Spectrometry
Tin / metabolism*
Reg. No./Substance:

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