Abstract:
Level of pesticide residues in tea products marketed in Hunan province was surveyed for food safety concerns. Residues of 24 pesticides in 189 tea samples were determined by means of gas chromatography (GC). Ninety-five, or 50.3%, of the sampled products were found positive with pesticide residues. However, the residue levels were all under the respective MRL set forth for food consumption in the nation. Among the 24 pesticides detected, only one was identified as organophosphorus chlorpyrifos and three as pyrethroids, i.e., bifenthtin, fenpropathrin, and cyhalothrin/beta-cyhalothrin. Among the tea products sampled in this study, the most frequently detected tea type was green tea and the insecticides were cypermethrin and beta-cypermerthrin. The residue of fenpropathrin present in the products imported from Fujian was on the borderline which posed a risk of exceeding the safety limit.