Document Detail

Residues of lambda-cyhalothrin in tea.
MedLine Citation:
PMID:  19116161     Owner:  NLM     Status:  MEDLINE    
Field experiments were conducted at two places in Tamil Nadu (India) during dry season of 2006 to determine the residues of lambda-cyhalothrin in fresh green tea leaves and black tea. Residues were quantified at different harvest intervals of '0' (3h), 1st, 3rd, 5th, 7th, 10th and 14th day after insecticide application. Persistence, dissipation pattern, half-life value and safe harvest interval of the insecticide in tea were calculated. Residues of lambda-cyhalothrin dissipated exponentially after application at both the locations and reached below the European Union maximum residue limit (MRL) of 1mg/kg on the 5th day. Lambda-cyhalothrin showed that like other insecticides it followed the first order dissipation kinetics. Half-life values varied from 2.8 to 3.5 days for lambda-cyhalothrin and a safety harvest interval of 5 days is suggested for tea at the recommended dosage.
Subbiah Seenivasan; Narayanan Nair Muraleedharan
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-12-24
Journal Detail:
Title:  Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association     Volume:  47     ISSN:  1873-6351     ISO Abbreviation:  Food Chem. Toxicol.     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2009-01-22     Completed Date:  2009-02-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8207483     Medline TA:  Food Chem Toxicol     Country:  England    
Other Details:
Languages:  eng     Pagination:  502-5     Citation Subset:  IM    
UPASI Tea Research Foundation, Tea Research Institute, Nirar Dam BPO, Valparai 642 127, India.
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MeSH Terms
Chromatography, Gas
Environmental Monitoring / methods
Food Contamination / analysis*
Insecticides / analysis*,  pharmacokinetics
Nitriles / analysis*,  pharmacokinetics
Pesticide Residues / analysis*
Plant Extracts / chemistry
Pyrethrins / analysis*,  pharmacokinetics
Tea / chemistry*
Reg. No./Substance:
0/Insecticides; 0/Nitriles; 0/Pesticide Residues; 0/Plant Extracts; 0/Pyrethrins; 0/Tea; 68085-85-8/cyhalothrin

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

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