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BIOLOGY CH21 Nutrition and Health — Science STD 9 — Question

Tamilnadu BoardEnglish MediumSTD 9ScienceBIOLOGY CH21 Nutrition and Health2 Marks
Question
Explain any two methods of food preservation.
✓

Answer

  1. SMOKING:
    Food products like Meat and Fish are exposed to smoke. The drying action of the smoke tends to preserve the food.
  2. Use of Inert gas:
    Nitrogen gas is filled in air tight packets of Potato wafers and other products. It prevents the growth of fungus and insects in them.

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