Source of Article: http://www.sciencedaily.com/releases/2008/09/080909204557.htm
ScienceDaily (Sep. 9, 2008) — Food factory work surfaces coated in titanium could cut the number of food poisoning cases every year, scientists heard at the Society for General Microbiology's Autumn meeting being held this week at Trinity College, Dublin.
In the food industry surfaces must be easy to clean. Wear of food contact
surfaces through abrasion, cleaning and impact damage increases the surface
roughness. Researchers from
"It is important that surfaces in a hygienic environment are kept
clean," said Adele Packer from
The researchers looked at how bacteria are retained after cleaning to surfaces with scratches. They found that the shape of the bacteria affected their retention; rod-shaped Listeria remained in tiny scratches less than 0.5 micrometers across, and round Staphylococcus cells stuck in scratches measuring 1 micrometer across.
"The results show that surface scratches retain bacteria well if they are of comparable size. The more tightly the bacteria fit in the scratches, the more difficult they are to remove during cleaning," said Adele Packer. "Our findings also indicate that titanium coating may have a role in reducing the attachment of E. coli to food contact surfaces; E. coli cells attached to stainless steel much better than titanium."
"These results will help designers make hygienic surfaces that are easy
to clean. This should help to reduce the chances of cross-contamination and
cross infection," said Adele Packer of
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