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[Survey of pesticide residues in imported tea (1992.4-2010.3)]
- Source :
- Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan. 54(3)
- Publication Year :
- 2013
-
Abstract
- A survey of pesticide residues in 116 imported tea samples on the Tokyo market from April 1992 to March 2010 was carried out. Twenty-two kinds of pesticides, including organophosphorus, organochlorine, pyrethroid and others, were detected at levels between trace (below 0.01 ppm) and 4.0 ppm in 76 samples. The rate of detection was 90% in non-fermented tea, 89% in semi-fermented tea, and 49% in fermented tea. Organophosphorus pesticide was not detected in puer tea, which is fermented with bacteria. The pesticide residues tended to be decreased by a fermentation process. However, organochlorine and pyrethroid pesticides appeared to be chemically stable, so they were still detected in fermented teas. Residue levels of these pesticides were calculated as less than 1% of ADI, except for ethion (45% of ADI) based on the daily intake of tea. Therefore, these teas should be safe when drunk in customary amounts.
- Subjects :
- Pyrethroid pesticides
Pyrethroid
Pesticide residue
Tea
Pesticide Residues
food and beverages
Food Contamination
General Medicine
Pesticide
Ethion
complex mixtures
chemistry.chemical_compound
Organophosphorus Compounds
chemistry
Fermented tea
Pyrethrins
Hydrocarbons, Chlorinated
Fermentation
Food science
Maximum Allowable Concentration
Tokyo
Organophosphorus pesticides
Food Analysis
Subjects
Details
- ISSN :
- 18821006
- Volume :
- 54
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan
- Accession number :
- edsair.doi.dedup.....5ef7f87cfdc56e2912ac756a4b792a25