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Radiation exposure mitigation through food

Technical Report:

Abstract

{sup 137}CsCl{sub 2} was incorporated into plants (tomyao and broccoli) and these homogenized solutions were administered to rats. The whole-body retention was determined with an Armac counter. The whole body retention patterns of {sup 137}Cs incorporated into the plants were not significantly different from that of the {sup 137}CsCl{sub 2} solution. Chitosan is derived from chitin, which is a cellulose-like biopolymer distributed widely in nature, especially in crustaceans, insects, fungi and yeast. The present study was to investigate whether chitosan can be applied to animal and human bodies in order to reduce the bioavailability of radio-iron and -zinc in food. Chitosan inhibits dietary iron absorption only when rats eat on iron-deficient diet. The effectiveness of phytate (myo-inositol 1,2,3,4,5,6-hexakis dihydrogen phosphate) and chitosan in reducing the bioavailability of radio-zinc depend on the concentration of phytate and chitosan. Recently, the share of imported foods increased ca. 40% of Japanese total food consumption. Radioactivities in imported foods must be checked from the viewpoints of internal radiation for Japanese subjects. Concentrations of {sup 232}Th and {sup 238}U in some imported mineral waters were higher than domestic waters. However, internal doses of portable waters are negligible. Individual foodstuffs in major food groups (fish and shellfish,  More>>
Authors:
Nishimura, Yoshikazu; Yukawa, Masae; Watanabe, Yoshito; Shiraishi, Kunio; Muramatsu, Yasuyuki; Uchida, Shigeo; [1]  Watabe, Teruhisa; Miyazaki, Taeko [2] 
  1. National Inst. of Radiological Sciences, Chiba (Japan)
  2. National Inst. of Radiological Sciences, Hitachinaka, Ibaraki (Japan). Lab. for Radioecology
Publication Date:
Dec 01, 2001
Product Type:
Technical Report
Report Number:
NIRS-R-45
Resource Relation:
Other Information: PBD: Dec 2001; Related Information: In: Final report on the project research 'exposure assessment and reduction of environmental radiation'. April 1998 - March 2001, 39 pages.
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS; FORAGE; CESIUM 137; RATS; RADIOACTIVITY; INTESTINAL ABSORPTION; DRINKING WATER; THORIUM 232; URANIUM 238; ZINC 65; PHYTIC ACID; CHELATES; RADIONUCLIDE KINETICS; RADIONUCLIDE ADMINISTRATION
OSTI ID:
20350660
Research Organizations:
National Inst. of Radiological Sciences, Chiba (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
TRN: JP0301731
Availability:
Available from National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage-ku, Chiba-shi, Chiba-ken 263-8555, Japan
Submitting Site:
JPN
Size:
page(s) 34-36
Announcement Date:

Technical Report:

Citation Formats

Nishimura, Yoshikazu, Yukawa, Masae, Watanabe, Yoshito, Shiraishi, Kunio, Muramatsu, Yasuyuki, Uchida, Shigeo, Watabe, Teruhisa, and Miyazaki, Taeko. Radiation exposure mitigation through food. Japan: N. p., 2001. Web.
Nishimura, Yoshikazu, Yukawa, Masae, Watanabe, Yoshito, Shiraishi, Kunio, Muramatsu, Yasuyuki, Uchida, Shigeo, Watabe, Teruhisa, & Miyazaki, Taeko. Radiation exposure mitigation through food. Japan.
Nishimura, Yoshikazu, Yukawa, Masae, Watanabe, Yoshito, Shiraishi, Kunio, Muramatsu, Yasuyuki, Uchida, Shigeo, Watabe, Teruhisa, and Miyazaki, Taeko. 2001. "Radiation exposure mitigation through food." Japan.
@misc{etde_20350660,
title = {Radiation exposure mitigation through food}
author = {Nishimura, Yoshikazu, Yukawa, Masae, Watanabe, Yoshito, Shiraishi, Kunio, Muramatsu, Yasuyuki, Uchida, Shigeo, Watabe, Teruhisa, and Miyazaki, Taeko}
abstractNote = {{sup 137}CsCl{sub 2} was incorporated into plants (tomyao and broccoli) and these homogenized solutions were administered to rats. The whole-body retention was determined with an Armac counter. The whole body retention patterns of {sup 137}Cs incorporated into the plants were not significantly different from that of the {sup 137}CsCl{sub 2} solution. Chitosan is derived from chitin, which is a cellulose-like biopolymer distributed widely in nature, especially in crustaceans, insects, fungi and yeast. The present study was to investigate whether chitosan can be applied to animal and human bodies in order to reduce the bioavailability of radio-iron and -zinc in food. Chitosan inhibits dietary iron absorption only when rats eat on iron-deficient diet. The effectiveness of phytate (myo-inositol 1,2,3,4,5,6-hexakis dihydrogen phosphate) and chitosan in reducing the bioavailability of radio-zinc depend on the concentration of phytate and chitosan. Recently, the share of imported foods increased ca. 40% of Japanese total food consumption. Radioactivities in imported foods must be checked from the viewpoints of internal radiation for Japanese subjects. Concentrations of {sup 232}Th and {sup 238}U in some imported mineral waters were higher than domestic waters. However, internal doses of portable waters are negligible. Individual foodstuffs in major food groups (fish and shellfish, meats, mushrooms, root vegetables and so on), which contributed to some radionuclide intakes in Japanese, were also analyzed to clarify the critical pathway in Japanese subjects. (author)}
place = {Japan}
year = {2001}
month = {Dec}
}