Preservatives Flashcards
Give four functions of preservatives
Prevent the growth of microorganisms which prevent food spoilage
Reduce food waste as food does not go off as quickly
Reduce the risk of food poisoning as bacteria growth is inhibited
Provide out-of-season foods all year such as strawberry jam
Classify preservatives
Natural
Artificial
Give four examples of natural preservatives
Sugar
Salt
Alcohol
Vinegar (acetic acid)
What is the origin of sugar?
Sugar cane and sugar beet
What is the origin of salt?
Sodium chloride
What is the origin of alcohol?
Fermentation of yeast
What is the origin of vinegar (acetic acid)?
Fermentation of alcohol
Give a use of sugar as a preservative
Jam
Sweets
Give a use of salt as a preservative
Cured meats
Butter
Give a use of alcohol as a preservative
Fruit cake
Give a use of vinegar as a preservative
Pickled vegetables
Chutney
Give four examples of artificial preservatives
Sulfur dioxide
Sorbic acid
Benzoic acid
Sodium nitrate
What is the origin of all artificial preservatives
Laboratory-produced chemical
Give a use of sulfur dioxide as a preservative
Dried fruit
Fruit-based breakfast cereals
Give a use of sorbic acid as a preservative
Baked goods
