Food Preservatives

1311 Words6 Pages
Introduction
A preservative is a naturally occurring or synthetically produced substance that is added to products such as foods, pharmaceuticals, paints, biological samples, wood, etc. to prevent decomposition by microbial growth or by undesirable chemical changes. All food products except for the one growing in our kitchen garden have food preservatives in them. Every manufacturer adds food preservatives to the food during processing. The purpose is generally to avoid spoilage during the transportation time.
Food is very important for the survival, so food preservation is one of the oldest techniques used by human beings to avoid its spoilage. Different ways and means have been found and improved for the purpose. Boiling, freezing
…show more content…
4. Boiling (heating, including pasteurization)

Food can be made sterile by heating it to over 70°C (pasteurization) with the bacteria being killed or by raising the temperature to over 120°C Ultra High Temperature (UHT). This higher temperature will kill all spores as well. Food is generally canned after heating so it will last for many months.

5. Vacuum packing

This preserves food as it removes the oxygen that
Get Access