Food additives

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Food additives

  1. 1. A food additive is any substance that is added to food to preserve it or improve its flavour and appearance.
  2. 2. Examples: •Citric acid •Monosodium glutamate •Disodium guanylate
  3. 3. They are added to food so that food can last longer, make food look more appetizing and taste more delicious.
  4. 4. TYPES Type of food additives Examples Preservatives Sodium nitrate, sodium benzoate Antioxidants Ascorbic acid (vitamin C) Flavouring agents Monosodium glutamate (MSG), aspartame Stabilizers and thickening agents Acacia gum, azo compounds, triphenyl compounds
  5. 5. Functions of Food Additives Type of food additive Function Preservatives Prevent or slow down spoilage of food caused by bacteria, fungi or microorganisms.
  6. 6. Functions of Food Additives Type of food additive Function Antioxidants Oils and fats in food are oxidized by air. The food then has an unpleasant rancid taste and odour. Antioxidants slow down oxidation of food.
  7. 7. Functions of Food Additives Type of food additive Function Flavouring agents Most of the natural flavours of food are lost during processing. A flavouring agent enhances the flavour and aroma of food.
  8. 8. Functions of Food Additives Type of food additive Function Stabilizers and thickening agents They improve the appearance of food by making it look more delicious. They give food a firm texture that is smooth and uniform.
  9. 9. Functions of Food Additives Type of food additive Function Dyes Dyes replace the lost colours during processing and make food look more attractive.
  10. 10. The Use of Food Additives • To preserve, flavour, blend, thicken and colour food. • Food must be preserved so it will not spoil during transportation. We have to process food using food additives so that we can enjoy safe, nutritious and tasty food. • If we do not use food additives, food will become more expensive.
  11. 11. The Effect of Food Additives on Health and The Environment • Food additives have become a necessary part of our daily lives. • However, the excessive intake of food additives can cause:- » Allergy » Cancer » Brain damage » Hyperactivity • Therefore, food additives must be managed correctly so they do not harm our health.

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