美国发明了一种测毒尺,可以用来检测食物是否腐败变质。测毒尺的外形像一支笔,一头尖,上面涂抹着特殊的化学物质。研究人员介绍,一些化学物质接触到变质食物后,会发生化学反应,出现变色或产生异味,即使在食物腐败初期,这些变化也相当明显。人们只需将测毒尺插入食物中,然后观察变色程度,就能判断这食物是否要丢弃。 The United States invented a drug test ruler, which can be used to detect food spoilage. The appearance of a drug test ruler looks like a pen with a sharp tip and a special chemical smear on it. The researchers explained that some chemical substances come into contact with the deterioration of food, chemical reaction occurs, there will be discoloration or odor, even in the early stages of food corruption, these changes are quite obvious. People just need to insert the test tape in the food, and then observe the degree of discoloration, you can determine whether the food to be discarded.