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  • 标题:Dietary tin intake and association with canned food consumption in Japanese preschool children
  • 本地全文:下载
  • 作者:Shinichiro Shimbo ; Takao Watanabe ; Haruo Nakatsuka
  • 期刊名称:Environmental Health and Preventive Medicine
  • 印刷版ISSN:1342-078X
  • 电子版ISSN:1347-4715
  • 出版年度:2013
  • 卷号:18
  • 期号:3
  • 页码:230-236
  • DOI:10.1007/s12199-012-0311-9
  • 语种:English
  • 出版社:Springer Japan
  • 摘要: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.

  • 关键词:Canned foods ;Children ;Dietary intake ;Inductively coupled plasma-mass spectrometry ;Japan ;Preschoolers ;Tin ;Urine
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