Food Preservation Explained: Methods, Principles, and Importance

Food Preservation Explained: Methods, Principles, and Importance

Food preservation.
Answer.

Food preservation is the science dealing with the process of dealing with preventing of decay or spoilage of food, thus allowing it to be stored in a fit condition for future use. The process used may vary with the period of storage. It may be as simple as boiling milk to preserve it for 24 hours or pickling vegetables, fish, or meat to last for a year.

Food preservation methods

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Need for Food Preservation

There is always a shortage of food in developing countries like India due to the demands of the growing population. Increasing production to meet the shortage results in wastage due to inadequate facilities available for storage and preservation. It is therefore all the more important to improve and expand facilities for the storage and preservation of food. Preservation increases the availability of foods, thus improving the nutrition of the people. Availability of seasonal foods throughout the year also helps in stabilising the prices of foodstuffs.

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Principles Of Food Preservation

• Prevention or delay of microbial decomposition by
  • Keeping out micro-organisms (asepsis).
  • Removal of micro-organisms, e.g,. by filtration.

Modern methods of food preservation

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• • Inhibiting the growth and activity of microbes by the use of lower temperature, drying, anaerobic conditions or chemicals.
• Destroying the microorganisms by radiation or by heat.
• Preventing or delaying self self-decomposition of the food by
  • Destroying or inactivation food enzymes e.g., by blanching or boiling.
  • Prevention or delay of purely chemical reactions e.g. prevention of oxidation by antioxidants.
  • Prevention of damage by insects and rodents.