蔬菜不必吃得太新鲜农作物生产,常使用大量化肥和其他有机肥料,特别是为了防治病虫害,经常施用各种农药,有时甚至在采摘的前一两天还往蔬菜上喷洒农药。新鲜并不一定意味着更有营养。美国一位食品学教授发现,西红柿、马铃薯和菜花经过1周的存放后,所含有的维生素C有所下降,而甘 Vegetables do not have to eat too much fresh produce, often using large amounts of fertilizers and other organic fertilizers, especially pest and disease control, often using various pesticides, and sometimes even spraying the vegetables one or two days before harvesting. Fresh does not necessarily mean more nutritious. A US food science professor found that tomatoes, potatoes and cauliflower after a week of storage, contains vitamin C decreased,