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ID 54415
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Author
Sugihara, Satoshi Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Doi, Hiroyuki Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Kato, Masahiko Department of Animal Pharmaceutical Sciences, Kyushu University of Health and Welfare
Mitoh, Yoshihiro Department of Oral Physiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Tsuda, Toshihide Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science
Ikeda, Satoru Department of Medical Technology, Graduate School of Health Sciences, Okayama University
Abstract
Aflatoxin (AFT) contamination is frequent in foods grown in tropical regions, including rice. Although AFTs are generally not found in temperate-region foods, global warming has affected typical temperate-region climates, potentially permitting the contamination of foods with AFT-producing Aspergillus flavus (A. flavus). Here we investigated the AFT production in rice during storage under natural climate conditions in Japan. We examined AFTs in brown rice and rough rice artificially contaminated with A. flavus for 1 year in Japan, and we subjected AFTs in white rice to the same treatment in airtight containers and examined the samples in warm and cold seasons, simulating the storage of white rice in general households. In the brown rice, AFTs increased after 2 months (March) and peaked after 9 months (October). The AFT contamination in the rough rice was minimal. After the polishing and cooking of the brown rice, AFTs were undetectable. In the white rice stored in airtight containers, AFTs increased after 1 month (August) and peaked after 2 months (September). Minimal AFTs were detected in the cold season. Thus, AFT contamination in rice may occur in temperate regions following A. flavus contamination. The storage of rice as rough rice could provide be useful for avoiding AFT contamination.
Keywords
Aspergillus flavus
aflatoxin
rice
temperate region
storage
Amo Type
Original Article
Published Date
2016-06
Publication Title
Acta Medica Okayama
Volume
volume70
Issue
issue3
Publisher
Okayama University Medical School
Start Page
167
End Page
173
ISSN
0386-300X
NCID
AA00508441
Content Type
Journal Article
language
英語
Copyright Holders
CopyrightⒸ 2016 by Okayama University Medical School
File Version
publisher
Refereed
True
PubMed ID
Web of Sience KeyUT