Question

what are food preservative mention the food preservative

Answer 1

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• The process of preparing food that involves the prevention of the growth of microorganisms so that it can be stored for longer is called food preservation. 
• This method either slows down the activity of microorganisms or kills them completely, but, at the same time, retains the original flavour and nutritional value of food. 
• The different methods of food preservation are: boiling, dehydration, refrigeration or freezing ,Canning ,chemical preservatives, pickling, pasteurization, fermentation, sealing, and smoking. 

Refrigeration or freezing:

Refrigeration involves storing food at a low temperature below 20°C. Freezing involves chilling foods below 0 °C (or freezing).  Large scale storage for freezing is done in cold storage facilities.  Fruits, vegetables, meats, seafood, grains, nuts, dairy, eggs, and prepared food are stored using this method. 

Chemical preservatives:

Some foods are preserved by the addition of chemicals or preservatives, such as sodium benzoate, sodium metabisulphite, ascorbic acid, and benzoic acid.  Examples are fruit juices, squashes, ketchup, jams, and jellies.

Answer 2

Answer:

➡ Food preservatives are chemicals that prevent food from spoilage due to microbial growth.

➡ Some examples of food preservatives:

• Table salt
• Sugar
• Vegetable oil
• Sodium benzoate (C6H3COONa)
• Salts of propanoic acid