Importance of fats and oils

FOOD SCIENCE AND PROCESSING 3 (2+1)
Lesson 12 : Composition, Nutritive Value and Processing of Nuts and Oil Seeds

Importance of fats and oils

  • Fat improves texture: In cakes biscuits and cookies, acts as leavening agent – in cake by incorporating oil in the flour forms walls around each little bubble.

  • Fat as a shortening agent: In baked products being insoluble in water, fat interferes with the hydration of gluten and cohesion of gluten strands during mixing, thus shortening them and making the product tender.

  • Fats for smoothness:
    • In ice cream and frozen desserts limits size of crystal and gives smooth texture
    • Fats interferes with crystallization of sugar – halwa, candies
    • Avoid lump formation – Upma
    • Forms emulsion in mayonnaise gives smooth texture

  • Fats enhances flavour
    • Aromatic flavour substances dissolve in fat and intensifies flavor
      Ex. Onion, ginger, garlic, pepper etc.
    • Fats improve palatability in taste, flavor, palatability, eg. Ghee.
    • Fats acts as coloring agents. Ex. Turmeric added to oil distributed in food uniformly.

  • Synergists
    • Compounds that delays auto-oxidation by reinforcing the action of antioxidants.
      • Ex. Citric acid, phosphoric acid, ascorbic acid, lecithin, EDA – They combine with the pro oxidant metals like cupper and iron and makes them ineffective.
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Last modified: Friday, 9 December 2011, 11:58 AM