Polycyclic aromatic hydrocarbons in teas using QuEChERS and HPLC-FLD.
Polycyclic aromatic hydrocarbons (PAHs) are food-processing contaminants considered to be carcinogenic and genotoxic. Due to its drying process stage, teas may be contaminated with PAHs. The aim of the study was to validate an analytical method involving QuEChERS and HPLC-FLD for the determination of PAH4 in teas and evaluate the contamination levels in 10 different types of teas from Brazil. Recoveries varied from 54% to 99% and relative standard deviations from 1% to 21%. Limits of detection and quantification were from 0.03 to 0.3 µg/kg and 0.1 to 0.5 µg/kg, respectively. Mate tea presented the highest PAH levels, with PAH4 varying from 194 to 1795 µg/kg; followed by black (1.8-186 µg/kg), white (24-119 µg/kg), and green teas (3.1-92 µg/kg). Teas with lowest PAH4 were strawberry, lemongrass, peppermint, and boldo. Only trace levels of PAHs were detected in tea infusions, so apparently it would not affect PAH intake by Brazilian population.
['Tfouni|Silvia A V|SAV|', 'Reis|Raquel M|RM|', 'Kamikata|Kamille|K|', 'Gomes|Fernanda M L|FML|', 'Morgano|Marcelo A|MA|', 'Furlani|Regina P Z|RPZ|']
D053000:Analytic Sample Preparation Methods D001551:Benz(a)Anthracenes D001564:Benzo(a)pyrene D001938:Brazil D002274:Carcinogens, Environmental D002851:Chromatography, High Pressure Liquid D002911:Chrysenes D005449:Fluorenes D005506:Food Contamination D005511:Food Handling D005513:Food Inspection D030019:Ilex paraguariensis D057230:Limit of Detection D010084:Oxidation-Reduction D018515:Plant Leaves D011084:Polycyclic Aromatic Hydrocarbons D015203:Reproducibility of Results D013050:Spectrometry, Fluorescence D013662:Tea D000069459:Teas, Herbal
Polycyclic aromatic hydrocarbons tea QuEChERS mate Camellia sinensis