Food Preservation and Methods physical methods simple notes
Physical methods Food Preservation and Methods Food preservation is essential for extending the shelf life of food products, maintaining their nutritional value, and ensuring food safety. Various methods and principles are applied in food preservation to prevent microbial degradation, self-decomposition, and damage from insects, animals, or mechanical causes. Here, we discuss several methods and the principles behind them. Principles of Food Preservation Preventing or Delaying Microbial Degradation Asepsis : Keeping microorganisms out of food through sterile conditions. Filtration : Removing microorganisms using filters. Growth Inhibition : Using low temperatures, drying, anaerobic conditions, or chemicals to stop microbial growth or activity. Microbial Destruction : Killing microorganisms through heat or radiation. Preventing or Delaying Self-Decomposition Enzyme Inactivation : Destroying or inactivating food enzymes, e.g., through blanching. Use of Antioxidants : Preventing or delayi...