Friday, September 23, 2016

[nidokidos] Food-on-floor `five second rule' debunked! (Posted by B D Jesrani)

 

 Food-on-floor `five second rule' debunked!


Eating food off the floor is not safe as bacteria may transfer in less than a second, says a new study that disproves the widely accepted notion that it is alright to scoop up food within a "safe" five-second window.

Professor Donald Schaffner from Rutgers University in the US found that moisture, type of surface and contact time all contribute to cross-contamination. In some instances, the transfer begins in less than one second, he said. "The popular notion of the `five-second rule' is that food dropped on the floor, but picked up quickly , is safe to eat because bacteria need time to transfer," Schaffner said, adding that while the pop culture "rule" has been featured by at least two TV programmes, research in peer-reviewed journals is limited. The researchers tested four surfaces -stainless steel, ceramic tile, wood and carpet --and four different foods (watermelon, bread, bread and butter, and gummy candy).

They also looked at four different contact times -less than one second, five, 30 and 300 seconds. They used two media -tryptic soy broth or peptone buffer -to grow En terobacter aerogenes, a nonpathogenic "cousin" of Salmonella naturally occurring in the human digestive system. Transfer scenarios were evaluated for each surface type, food type, contact time and bacterial prep; surfaces were inoculated with bacteria and allowed to completely dry before food samples were dropped and left to remain for specified periods.

All totalled 128 scenarios were replicated 20 times each, yielding 2,560 measurements.Post-transfer surface and food samples were analysed for contamination. Not surprisingly , watermelon had the most contamination, gummy candy the least, experts found.

 

 

Adam Ruins Everything - How Listerine Created Bad Breath

Adam tells the story of how Listerine exploited your insecurities to become a household name.

Click here to watch this video

http://www.nidokidos.org/threads/254589

__._,_.___

Posted by: Cool Kis <cooolkis@gmail.com>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (1)

Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.

===================================================
NidokidoS Group for best of forwarded mails
To join us , send an email to 
nidokidos-subscribe@yahoogroups.com


Be the part of Nidokidos , Join our Forum
http://www.nidokidos.org


to share your emails with us, send them at
nidokidos@yahoogroups.com

===================================================

.

__,_._,___

No comments:

Post a Comment