FOOD PROCESSING AND PRESERVATION
FOOD PRESERVATION METHODS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Carbon Dioxide
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Nitrogen
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Oxygen
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None of the above
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Detailed explanation-1: -Nitrogen is used in the preservation of foods. Nitrogen is added in the food containers to remove any oxygen in it and then sealed. As there is no presence of oxygen in the container, the bacteria cannot grow and hence food remains fresh.
Detailed explanation-2: -Carbon Dioxide is most commonly used to prevent the growth of mold and bacteria and is used to achieve the longer shelf life. The balance of how much Carbon Dioxide, Nitrogen and Oxygen to leave in a package is a unique recipe that should be customized according to the products being preserved.
Detailed explanation-3: -Vacuum packaging refers to the technique of removing air from a pack prior to sealing and it predates the use of gases as a means of food preservation. Its principal purpose is to remove oxygen by pulling the packaging material into intimate contact with the product.