Biology students and their professor Anthony Hilton monitored the transfer of the common bacteria, Escherichia coli (E. coli) and Staphylococcus aureus from different indoor floor surfaces to food items like pasta, biscuits, and sweets. The different indoor floors include tiles, laminated, and carpeted surfaces. They measured the amount of bacteria transferred from the floor to the food from 3 to 30 seconds. The result showed that time was a very important factor on the amount of bacteria transferred. The less time the food was in contact with the floor, the less bacteria it contained. They also found that what type of floor the food dropped on mattered as well. Bacteria was found to be easiest transferred from laminate and tiled surfaces compared to carpeted surfaces.
The study also found that 87% of people surveyed would eat food dropped on the floor, 55% of those that would were women, and of those woman 81% follow the 5 second rule. The "5 second rule" that we have been following as a child may actually be reliable and safe after all. So go ahead and eat that piece of food you dropped, just make sure it's within 5 seconds of touching the floor.
Posted by Amber Vien (6)