Essential Tips for Food Preservation and Safety

Portability of Food: The food comes into contact with air, and after a time, alters and changes its appearance, smell, and taste. Rotting meat, fresh fruits, and fermenting bread take on a dark greenish hue. To avoid this, you must save and protect food so that it lasts longer and does not lose its nutritional value. Causes of Deterioration are decomposed foods: environmental microorganisms, bacteria, parasites, food enzymes, chemical reactions, biochemical, biological agents, environmental temperature, humidity, light, oxygen, or simply time. Insect attacks also contribute to these factors, which intervene in the decomposing physical and chemical processes of transformation of the component substances. These processes are manifested by discoloration, odor, taste, consistency, or texture of foods. Can You Avoid Deterioration of Food? For phenomena occurring in food spoilage, certain appropriate conditions are needed: access to air, moisture, and temperature. You can stop deterioration by removing air, water, and excessive heat. Conservation methods are applied to prevent biological agents from altering foods. Indirect Portability: These methods prevent the action of microorganisms and enzymes but generally do not destroy all microorganisms and enzymes in vacuum-packed foods: Foods include:
Dried items: powdered milk, scrambled eggs, tea powder, jams, dried fish (cod). Refrigerated: fruits, vegetables. Frozen: ice cream, fish, fruits. Heat Treatment: Pasteurized canned goods, including milk and dairy products (butter) in coolers.

Direct Methods of Storage: These methods destroy microorganisms and prevent the deterioration reaction of food: heat sterilization and the use of additives. Chemical Conservation Methods: The process of spoilage can be prevented by adding certain chemicals called additives, which can be natural (vinegar, oil, sugar, salt, alcohol) or of industrial origin, duly authorized. Each country has strict food regulations governing the use of additives to ensure they are not harmful to consumers.Role of Additives: a) Eliminate microorganisms: antibiotics. b) Prevent microorganisms from multiplying or proliferating: preservatives. c) Prevent oxidation disorders: antioxidants. d) Modify the organoleptic properties: colors, flavor enhancers, sweeteners, flavoring. e) Stabilize the physical characteristics: emulsifiers, thickeners, anticaking agents, softeners, pH regulators. f) Improve and proofreaders: used in breadmaking, winemaking, and in the regulation of the maturation of meat products or cheese. Transformation in Food: Physical agents disrupt food: light, oxygen, temperature, humidity, pH. The cooking treatment: cooking with water, steam, stewing, pressure cooking, roasting, microwaving, grilling, frying, etc., can enrich or impoverish the food. Food Manipulation: Peeled potatoes exposed to ambient oxygen oxidize the surface; if left to soak, they do not blacken. However, they also oxidize and lose much of their vitamins. If you chop them, oxidation occurs more
rapidly. The same happens when food is crushed. The part that contains the most vitamins is the outer layer, so deep peeling may result in vitamin losses.