Food Preservation Flashcards
How does freezing preserve food?
Freezing slows down the growth of microorganisms by lowering the temperature to below freezing.
Give two advantages of freezing food.
Retains nutrients, flavor, and texture.
Long shelf life if stored properly.
Give two disadvantages of freezing food.
Can lose texture after long periods.
Requires freezer space and energy.
How does the canning process preserve food?
Food is sealed in jars or cans and heated to destroy microorganisms.
Name two foods commonly preserved by canning.
Vegetables, fruits, sauces.
What is a disadvantage of canning?
Can lose flavor and texture, especially for some vitamins.
How does drying preserve food?
By removing moisture, which prevents the growth of microorganisms.
Name two foods suitable for drying.
Fruits, herbs.
Give two advantages of drying food.
Long shelf life, lightweight and easy to store.
Retains most nutrients, especially when air-dried.
Give two disadvantages of drying food.
Changes texture and taste.
May require rehydration before use.
How does pickling preserve food?
Food is preserved in an acidic solution (vinegar or brine) to prevent microbial growth.
Name two foods that can be pickled.
Cucumbers, cabbage.
What is a disadvantage of pickling?
High in sodium or vinegar, which may not be suitable for everyone.
How does salting preserve food?
Salt draws moisture out of the food, creating an environment where bacteria cannot grow.
What are two foods commonly preserved by salting?
Fish, meat (e.g., bacon).
What is a disadvantage of salting?
High in sodium, which may contribute to health problems like hypertension.
How does fermentation preserve food?
Microorganisms (bacteria, yeast) break down food into a form that can be safely stored.
Name two foods that are fermented.
Yogurt, sauerkraut.
Give one advantage of fermentation.
Increases shelf life and adds beneficial bacteria to the diet.
Give one disadvantage of fermentation.
Requires careful monitoring of temperature and hygiene.
How does vacuum sealing preserve food?
Food is sealed in airtight bags or containers, removing air to prevent the growth of bacteria.
Name two foods that can be vacuum sealed.
Meat, fish.
What is an advantage of vacuum sealing?
Preserves flavor and texture, prolonging shelf life.
What is a disadvantage of vacuum sealing?
Requires special equipment (vacuum sealer) and storage space.
