Document Detail

Problems of positive list system revealed by survey of pesticide residue in food.
MedLine Citation:
PMID:  17538241     Owner:  NLM     Status:  MEDLINE    
The positive list system became effective from May 29, 2006 to improve the regulation of residual agricultural chemicals (pesticides, feed additives and veterinary drugs) in foods. In accordance with the system, we investigated pesticide residues in 50 agricultural products purchased in Morioka city from March to November 2006. Analyses were performed according to the "Multiresidue Method for Agricultural Chemicals by GC/MS", the Notice of the Ministry of Health, Labour and Welfare. Five pesticides and two non-agricultural chemicals were detected from 16 samples. Ortho-phenylphenol (OPP) was detected from 8 samples: immature pea, snap bean, kiwi, plain-boiled bamboo shoot, mango, white asparagus, lemon and domestic shiitake mushroom. Maximum residue limits (MRLs) have not been established for these products, and they exceeded the uniform level of 0.01 ppm. DDT was detected from Philippines banana (0.30 ppm) and Korean paprika (0.45 ppm). The residual level in Philippines banana was lower than the MRL, but Korean paprika exceeded its MRL. Chlorpyrifos, Thiabendazole and Imazaril were detected from citrus imported from the U.S.A., but their residue levels were lower than the respective MRLs. Aniline and 2-pyrrolidone were detected from several imported products. These two may not be regulated by the positive list system because they are not agricultural chemicals, although their derivatives are used as pesticides or veterinary drugs. Three problems have been revealed from this survey: 1) application of the uniform level to minor agricultural products, 2) residues of non-agricultural chemicals whose toxicity is uncertain, 3) metabolites of agricultural chemicals, which are also regulated by the positive list system, have not been clearly defined.
Mariko Iwasaki; Itaru Sato; Yihe Jin; Norimitsu Saito; Shuji Tsuda
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of toxicological sciences     Volume:  32     ISSN:  0388-1350     ISO Abbreviation:  J Toxicol Sci     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-05-31     Completed Date:  2007-08-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7805798     Medline TA:  J Toxicol Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  179-84     Citation Subset:  IM    
Department of Veterinary Medicine, Iwate University, Ueda, Morioka, Japan.
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MeSH Terms
Agrochemicals / analysis*
Crops, Agricultural / chemistry*,  standards
Data Collection
Environmental Monitoring / methods*
Food Analysis / legislation & jurisprudence*,  methods
Food Contamination / analysis,  legislation & jurisprudence*
Gas Chromatography-Mass Spectrometry
Pesticide Residues / analysis*
Reg. No./Substance:
0/Agrochemicals; 0/Pesticide Residues

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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