Wielopierscieniowe weglowodory aromatyczne [WWA] w herbatach ziolowych i owocowych

Przeprowadzono analizą 16 podstawowych wielopierścieniowych węglowo- dorów aromatycznych (WWA) w herbatach owocowych i ziołowych. WWA w badanym materiale występowały na poziomie 48,23 do 1703 µg/kg Najwięcej ВaP stwierdzono w herbacie lipowej (74,19 µg/kg).

Polycyclic aromatic hydrocarbons (PAHs) of which benzo[a]pyrene is the most commonly studied and measured, are fused - ring aromatic compounds formed in both natural and man made processes and are found widely distributed throughout the human environment. PAHs occur as contaminants in different food categories and beverages including water, vegetables, fruit, cereals, oils and fats, barbecued and smoked meat. The sources of PAHs in food are predominantly from environmental pollution and food processing. PAHs emissions from automobile traffic and industry activities were show to influence the PAHs levels in vegetables and fruits. The present study was carried out to determine levels of 16 basic PAHs in herbs and fruit teas. The method was based on the hexane extraction and cleaned up by florisil cartridge. The extracts were analysed by GC-MS. The levels of total PAHs varied from 48,27 µg/kg (hibiscus tea) to 1703 µg/kg (green tea). The highest level of BaP was found in lime tea (74,2 µg/kg).