Five-Second Rule is a Myth

The five-second rule is a food hygiene practice stating that food dropped on the floor is not contaminated if it is picked up within five seconds. The problem with the theory, according to microbial ecologist Jack Gilbert, is that it simply isn’t true. Gilbert is a group leader at the U.S. Department of Energy’s Argonne National Laboratory biosciences division, a professor at the University of Chicago and the director of the Microbiome Center.

“If I dropped anything on the floor right here in my office, it would pick up millions and millions of bacteria in milliseconds,” Gilbert said.

Check Lead Recycling, Regulate Sources to Prevent Food Contamination: Indian Experts
The absence of stringent regulation of processes such as recycling of lead-based products as well as lack of public awareness contributes to food poisoning.

‘If you drop food on the floor, there is always a possibility of picking up a dangerous pathogen.’

In 2006 a study published by researchers at Clemson University found that 99 percent of bacterial cells on a sheet of tile transferred to a piece of bologna after a period of five seconds.

However, Gilbert said that while there is always a possibility of picking up a dangerous pathogen, the probability in sanitary countries like the U.S. is usually very low.

“I’ll make a point in my lectures of putting my hand on the floor and licking it,” Gilbert said. “If you’re healthy and not immuno-compromised, and your food falls on the floor, even if you’re a child, there’s normally no harm at all in consuming it.”

Food Contamination Detection Turns Easier
A team from the University of Missouri, including two Indian origin engineers, have now developed a technique which may help detection of food contamination and help make it more rapid and accurate.

Even better, ingesting the microorganisms around you, especially as a child, could help lower the risk of developing asthma and allergies by desensitizing your immune system to allergenic stimuli.

“Eating food off of the floor, as an infant, could significantly reduce chances of having allergies, because you’re exposed to a larger variety of microorganisms,” Gilbert said. “That health benefit is normally attributed to building a tolerance to the outside world.”

Majority of Chinese Wary About Food Contamination
A new study has revealed that the risk of food contamination is so widespread in China that a majority of Chinese are wary about what kind of food products they eat.

Even places that we think of as dirty are unlikely to make you sick. As a part of his home and hospital microbiome projects, Gilbert and his team have swabbed and tested many surfaces, from toilets to cell phones.

“I never found anything in any of the restrooms, homes or hospitals that I looked at where if I dropped food there would be a high probability that I’d get sick,” Gilbert said. “Just because something is unpleasant doesn’t make it harmful.”

Prevent Food Contamination With Green Tea and Grape Seed
Scientists have suggested that extracts from natural sources such as green tea, grape seed and bacteriocins such as nisin could be alternatives for food processors instead of chemicals

In the end, Gilbert said, it’s still difficult to replace the five-second rule with something more reasonable, because there just isn’t enough experimental data on the subject.

Source-Newswise