食物中不应含有毒的化学物质和病原体 ,这是最基本的卫生要求。可是当前食品污染的问题却总是层出不穷 ,国外的疯牛病、二恶英风波尚未完全平息 ,国内又接二连三地发生了瘦肉精、吊白块等污染食品的事件 ,造成了不良的后果 ,也给中国食品贸易国际化的工作带来了严峻的挑战。保 Food should not contain toxic chemicals and pathogens, which is the most basic hygiene requirement. However, the current problems of food contamination are always emerging. The mad cow disease and dioxin crisis in other countries have not completely subsided. There have been a series of incidents of clenbuterol and sliver contaminated food in the country, causing adverse consequences as well as The internationalization of China’s food trade posed a serious challenge. Paul