Imidacloprid in processed tea and tea liquor.

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Sanyal N, Hazra D, Pal R, Somchaudhury AK, Chowdhury A

Imidacloprid in processed tea and tea liquor.

J Zhejiang Univ Sci B. 2006 Aug;7(8):619-22.

PubMed ID
16845714 [ View in PubMed
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Abstract

Imidacloprid is a newly introduced broad-spectrum chloronicotinyl insecticide and will find its way in agricultural production, particularly in Asia. However, information on the fate of imidacloprid in crop plants is lacking. The degradation of imidacloprid in processed CTC tea and tea liquor was investigated in the present study in which imidacloprid was applied at recommended application rate (30.0 g a.i./ha) and twice the recommended application rate (60.0 g a.i./ha) for three consecutive seasons. Imidacloprid was rapidly dissipated in processed tea following first order reaction kinetics at all application rates and had half-lives of 0.91-1.16 d with the residue in tea liquor found to be below detectable limit on 3rd day samples. The study revealed that imidacloprid is safe for human consumption and will not pose any residual toxicity problem.

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