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Chemistry in Everyday Life — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryChemistry in Everyday Life2 Marks
Question
Explain about antioxidants.
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Answer

  1. Antioxidants are substances which retard the oxidative deteriotations of food. Food containing fats and oils is easily oxidised and turn rancid, .
  2. To prevent the oxidation of fats and oils, chemical BHT (butyl hydroxy toluene), BHA (butylated hydroxy anisole) are added as antioxidants.
  3. These materials readily undergo oxidation by reacting with free radicals generated by the oxidation of oils there by stop the chain reaction of oxidation of food.
  4. Sulphur dioxide, suiphites are also used as antioxidant and also act as antimicrobial agents and enzyme inhibitors.

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