what are good preservatives ? write the roles of sugur , salts and
oils in food preservation?
Answers
Answer:Food preservatives are chemicals that prevent food from spoilage due to microbial growth. Table salt, sugar, vegetable oil, sodium benzoate (C6H3COONa), and salts of propanoic acid are some examples of food preservatives.
Protection of foods from microbial spoilage using salt (usually sodium chloride) or sugar (usually sucrose) has ancient roots and is often referred to as salting, salt curing, corning or sugar curing. (Pieces of rock salt used for curing are sometimes called corns, hence the name "corned beef.") Curing may utilize solid forms of salt and sugar or solutions in which salt or sugar is mixed with water.
Oil's oxygen-free environment is perfect for growth of the bacteria. For this reason, herbs and vegetables in oil must be stored correctly to prevent botulism food poisoning. Commercial garlic-in-oil mixtures are acidified to prevent bacterial growth. These products can be stored safely at room temperature.