Sharper Image, for example, sells FresherLonger food containers containing silver nano particles, through their Amazon.com store. Here’s part of the new FreshLonger product description from Amazon.com with no mention of nanotech at all (for the original description that had focused heavily on the beneficial effects of nanotechnology, see nanopublic posting from June 6, 2006).
Keep food fresher for longer! End the expense, disappointment and frustration of tossing out costly food that has spoiled or grown "furry" much too quickly. Keep all kinds of foods fresher for longer, helping to preserve the flavor, nutrients and appearance of fruits, vegetables, herbs, breads, cheeses, soups, sauces and meats. Even raspberries last a long time! Sharper Image's exclusive FresherLongerTM Miracle Food Storage Containers are made of specially treated air- and odor-impermeable polypropylene and they feature a patent-pending, airtight silicone-gasket locking system that helps to retard spoilage.