Preservatives

Card Set Information

Author:
Mikahbear
ID:
252968
Filename:
Preservatives
Updated:
2013-12-13 07:34:48
Tags:
home ec
Folders:
LC,Home,ec
Description:
home ec
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  1. Natural preservatives?
    • Salt- bacon, pickles - rock, sea
    • Sugar-jam, sweets- beet,cane
    • Vinegar- pickles, chutney- fermentation
  2. Artificial preservatives?
    • Sulphur Dioxide - E220-sausages, fruit juice
    • Sorbic acid E200-soft fruit, yoghurt
    • Both made in labs
    • Not permitted in baby foods
  3. Functions of preservatives?
    • Prevents spoilage by preventing microbial growth
    • Extends shelf life
    • Prevents food poisoning
    • Reduces waste

  4. Antioxidants E300-399
    Natural?
    • Ascorbic acid-fruit drinks-fruit and veg
  5. Artificial antioxidants?
    • BHA ( e320) stock cubes
    • BHT (e321) chewing gum
    • Both made in labs
    • Not permitted in baby foods
  6. Functions of antioxidants?
    Prevents oxidation where food is spoiled by reacting with oxygen
  7. Physical Conditioning agents? e400-499
    Emulsifiers?
    • Lecithin-mayonnaise-eggs
    • To make permanent emulsions
  8. Stabilisers?
    • Guar gum e412 - confectionary-guar plant
    • To stabilise emulsions by thickening them
  9. Polyphosphates?
    • Magnesium carbonate-cake mixes-lab
    • To prevent lumping
  10. Pectin e440?
    • jams/jellies-fruit cell wall
    • To set mixtures eg jam
  11. Humectants?
    • Sweeteners- confectionary,sweets,cakes-lichen(fungus)
    • They absorb water vapour from air and keep foods moist
  12. Flavourings? No E numbers
    Natural?
    • Sugar-jam,cereals-cane/beet
    • Adds flavour
    • Salt-cheese,butter-sodium chloride
    • Adds flavour
    • Spices/herbs-sauces,meat products-roots,seeds,leaves
    • Replaces flavour lost in processing
  13. Artificial flavourings?
    • Ethyl acetate-rum flavour
    • Enhances food flavouring
    • e600-699 flavour enhancers egg monosodium glutamate(msg)(e621) found in Chinese food,soup,sauces.
    • Enhances food flavour
  14. Sweeteners? e900-999
    Natural?
    • Fructose/sucrose-biscuits,cakes-fruit
    • Sweetens
  15. Artificial sweeteners?
    • Aspartame e952 - diet drinks
    • Used in low cal food and drink to sweeten
  16. Bulk sweeteners?
    • Sorbitol-sugarfree foods-lichens(fungus)
    • mannitol e965-sugarfree gum-lichens
    • Sweetens it
  17. What are nutritive additives?

    Nutrients added to food during manufacture
    fortifies food-fortified food
  18. Functions of nutritive additives?
    • Replaces nutrients lost in food processing
    • Increases nutritional value
    • Increases sales
    • to imitate another food eg tvp meat
  19. Advantages of nutritive additives?
    • Increases shelf life
    • Prevents waste
    • More appetising
    • Improved taste
    • Improved texture

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