Vacuum sealing is pretty popular these days. It’s like the new century microwave ovens; every one’s buying it for their kitchen top and sealing up their favorite food or catch for cold storage. However, you may not be fully aware of what’s the scientific reason of how an ordinary piece of food can be placed inside an over grown toaster like machine and it can now last at least two times longer.
The Air Effect on food:
Air may be the absolute necessity for humans to survive, however, same can’t be said about the food we eat. Air contains gases and a lot of bacteria which are definitely not good for your food. Substances in air can react with food to change its taste, quality, shelf life and integrity. When a food item is vacuum sealed, it is basically placed inside a sealed container or bag without any air inside. This prevents all the bacteria, gases and moisture to interact with the packed food item in any possible way thus the food item can stay fresh for prolonged periods of time, as proven by scientific research.
Avoiding freeze burn:
Since the food is sealed in a vacuum environment, upon freezer, the cold environment of the freezer can’t fully cross the void and interact with actual food item inside the bag much, hence the chances for freezer burn is eliminated almost completely. Foods stays in an environment of their own, separated by a shield of empty space from the extreme cold. Whereas, foods stored without sealing or with air inside the seals can suffer from effects of burn.
How it works?
A vacuum sealer does exactly as its name implies; it seals something (i.e. food specifically) inside a container or bag and then forces all the air out of the bag before placing the final seal. It is important to note that you may need to temper your food a bit if it contains juices before sealing it in order to avoid any juice being sucked away along with the air. The created vacuum inside the bag prevents any and all external things from meddling with the sealed item such as oxygen, bacteria, spilled liquids or insects.
Keeping the little guys out:
Often, our food items are spoiled inside the cold temperatures of a fridge, due to presence of little guys known as microorganisms. They include various types of bacteria, viruses and fungi, which are invisible to the naked eye. Bacteria and fungi are present in air floating for a suitable home ground and as soon as they find a worthy piece of food, they start colonizing, breaking down nutrients and spoiling food. Vacuum sealers eliminate this from ever happening by creating a vacuum which can’t be crossed by these little mischievous food thieves.
For more effective preservation of food, always follow proper tempering techniques when removing a vacuum sealed item from your freezer, and the quality of your food will be enhanced further.