Revolutionary packaging could eliminate food poisoning
Sunday April 24, 2011 09:28:29 AM,
IANS
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London:
Food poisoning could become a thing of the past thanks to a
revolutionary packaging which changes colour to show when fresh
produce has gone stale.
Scientists have invented a sensor film which changes from yellow
to blue to indicate when meat or fish has gone bad.
It could mean an end to the unpleasant kitchen ritual of having to
smell chicken legs, pork chops or pieces of fish to see if they
are spoiled.
There have been several scandals involving the sale of rotten
meat. Customers themselves shorten the shelf-life of many meat and
fish products by not storing them properly, reports the Daily
Mail.
Now, experts at the Fraunhofer Research Institution for Modular
Solid State Technologies in Munich have developed a plastic film
which can be incorporated into packaging.
The film responds to biogenic amines, the molecules produced when
foods such as meat and fish decay. They are also responsible for
the unpleasant smell from food which has gone stale.
If amines are released into the air within the packaging, the
indicator dye on the sensor film reacts with them and changes its
colour from yellow to blue.
Anna Hezinger, a project researcher, said: "Once a certain
concentration range is reached, the colour change is clearly
visible and warns the consumer."
"This is not only interesting when it comes to identifying foods
that have become inedible.
"Many people are also extremely sensitive to the presence of
certain amines, which makes a warning all the more important for
them," said Hezinger.
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