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How do nanoparticles help keep food fresh in packaging?
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nanoparticle
Image showing nanoparticles of an alloy of gold (yellow) and palladium (blue) on an acid-treated carbon support (gray). These particles were employed as catalysts for the formation of hydrogen peroxide from hydrogen (white) and oxygen (red).
Nanoparticles enhance food preservation by improving the barrier properties of packaging materials and providing active protection against spoilage.
Incorporating nanoflakes of clays and claylike particles into packaging films creates a more effective barrier that slows the ingress of moisture and restricts gas transport. By controlling the ambient atmosphere around the food, these materials help maintain the conditions necessary to extend shelf life.12
Additionally, nanoparticles with antimicrobial properties, such as nanocopper or nanosilver, can be integrated directly into packaging materials. These particles actively combat microbial contamination, further ensuring the safety and freshness of the food product.1