Rory McGee loves to take a bite out of a fresh apple. But the trouble is, the fruit doesn't stay fresh for very long.
Air is a food's worst enemy, oxygen reacts with enzymes in the apple causing it to turn brown.
But now, food scientists at the USDA have created a brand new edible food wrap that could make your food taste better and last longer. Using chemistry, scientists aligned molecules in the wrap to form a shield. Like a very tight chain link fence, when air hits the wrap, it is blocked. This lets less air into the food. The edible film is meant to be a natural alternative to the traditional synthetic films.