人们往往会习惯地先期购买大量的蔬菜放在家中,以便节日期间食用或者懒得上市购买.其实消费者将蔬菜存放数日后再食用,是非常危险的.据有关资料介绍,危险来自蔬菜中含有的硝酸盐.硝酸盐本身无毒,然而在储藏一段时间之后,在酶与细菌的作用下, People tend to buy a lot of vegetables at home in advance, in order to eat during the holiday or too lazy to buy .In fact, consumers will be stored in vegetables for a few days after consumption, is very dangerous .According to the relevant information, the danger comes from vegetables Nitrate. Nitrate itself is non-toxic, however, after storage for a period of time, under the action of enzymes and bacteria,