茶叶中多环芳烃污染水平及来源研究进展

在查阅国内外近20年来相关文献基础上,分析了茶叶中多环芳烃污染水平及分布规律,阐述了多环芳烃在茶叶种植、加工过程中的污染来源、环境行为和生物学效应,提出了新形势下茶叶产地环境对茶叶中多环芳烃污染来源的重要性,可为探寻茶叶中多环芳烃关键控制点,为进一步研究新环境下多环芳烃污染来源和开发风险控制技术提供思路。

Contaminated Levels and Source of Polycyclic Aromatic Hydrocarbons in Tea

Polycyclic aromatic hydrocarbons(PAHs)are priority pollutants in the world due to their high toxicity, such as carcinogenicity and genemutation. PAHs residue in foods becomes the focus of food safety owing to the environmental deterioration and high frequency of food accident. Tea is one of the most widely consumed beverages in the world and it is a major cash crop in China. However, PAHs contamination could be occoured during the long-time and complex tea production chain. In this study, the contaminated levels and pollution source of tea were analyzed on the basis of relevant articles during recent 20 years. Environmental behavours and tea biological effects of PAHs were aslo described. Meanwhile, the important source of PAHs from tea plantation area was firstly pointed out. This study would provide some helpful information for further exploring the key control point and developing effective techniques to recude PAHs levels in tea.