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民间流传的“5秒定律”认为,若食物不慎掉在地上,因细菌转移至食物上需时,只要5秒内取起仍可安全食用。不过,研究称,该定律是以讹传讹。据报道,美国新泽西州罗格斯大学研究显示,细菌不足1秒便可污染掉在地上的食物,这代表“5秒定律”可能是以讹传讹。研究结果在美国微生物学会期刊刊出。研究人员分别将西瓜、面包、涂有牛油的面包及糖果,掉在遭产气肠杆菌污染的不锈钢、陶瓷、木头及地毯
Folklore “5 second law ” that if the food accidentally dropped to the ground, due to bacteria transferred to the food on time, take up within 5 seconds can still be safe to eat. However, the study said that the law is based on the erroneous assertion. According to reports, Rutgers University in New Jersey, the study shows that less than 1 second bacteria can contaminate the food on the ground, which means “5 second law ” may be falsely asserted. The results are published in the Journal of the American Society of Microbiology. The researchers dropped watermelon, bread, butter-coated bread and candy on stainless steel, porcelain, wood and carpet polluted by Enterobacter aerogenes