英国发明食品袋 可显示食物是否变质
Scientists from Strathclyde University, UK, have created an intelligent food wrapping that can tell people if the contents are going bad. This new wrapping works in accordance to the oxygen level inside - it will change color if levels of oxygen rise which means the food inside is going through a natural decay。
英国斯特莱斯克莱德大学的科学家们日前发明出了一种智能食品包装袋，人们可以通过观察该包装袋来判断其内食品是否变质。据了解，这种新型包装袋依据袋内氧气含量发生变化——如果袋中食品变质，氧气含量便会上升，包装袋也会因此改变了颜色。