Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi)
Online ISSN : 1882-1006
Print ISSN : 0015-6426
ISSN-L : 0015-6426
Notes
Development of Rapid Cleanup Method Using New Cleanup Agents for Analysis of Pesticide Residues in Tea
Yuko UEDA Katsuhisa HONDA
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2017 Volume 58 Issue 4 Pages 188-194

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Abstract

Cleanup using two types of agents (S-NH2 and S-Si) developed by the authors was investigated with the aim of removing interfering substances such as catechin and caffeine to enable analysis of pesticide residues in tea. S-NH2 and S-Si removed approximately 100% of catechin and caffeine in 6 species of tea. Recoveries of 61 pesticides in tea were tested at the level of 0.1 μg/g, and 44 pesticides showed recovery within the range from 70 to 120%, with RSD of less than 10%. With cleanup using S-NH2 and S-Si, pesticide residues in tea could be analyzed within two hours.

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© 2017 Japanese Society for Food Hygiene and Safety
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