food additives pdf

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  • According to the World Health Organisation, substances that are added to food to maintain or improve the safety, freshness, taste, texture or appearance of food are known as food additives.  For centuries, food additives have been used to preserve food, for example salt (in meat, bacon or dried fish), sugar (in marmalade) or sulphur dioxide (in wine).

  • The perception of MSG in various cultures varies significantly. In Western countries, MSG has often been viewed with suspicion, influenced by media reports and consumer advocacy groups that raised concerns about its safety. In contrast, societies in East Asia tend to celebrate MSG for its ability to enhance flavors.


  • Carrageenan is a polysaccharide composed of linear chains of sugar residues, primarily galactose. It is extracted from various species of red algae, most notably from Irish moss and other seaweeds. There are three main types of carrageenan – kappa, iota, and lambda – each with distinct properties that tailor their functionality in food applications. Kappa carrageenan forms strong gels in the presence of potassium ions, while iota carrageenan creates softer gels with calcium. Lambda carrageenan, on the other hand, remains soluble and does not gel, making it suitable for use in products where thickening is desired without gel formation.


  • 3. Acetic Acid This weak organic acid is vital for producing synthetic fibers, plastics, and food preservatives. Acetic acid is also a key ingredient in the production of vinegar, making it an essential component in the food industry.


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