Germ-killing plastic wrap
By Janet Raloff, 15:48 PM April 15, 2008
Biodegradable plastic that releases germ killers provides an example of what's known as active packaging, and scientists report progress toward taking this concept to market.
Paul Dawson and his colleagues at Clemson (S.C.) University are fashioning plastics from proteins found in corn, soy, and wheat. While these biodegradable polymers are being heated or compressed to make a thin film, the food scientists add a sprinkling of a natural antimicrobial agent–usually nisin. This is a bacteriocin...
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