Food Preservation

How does dehydration work to preserve food?

• Provides an acidic environment.

• Removes oxygen exposure.

• Removes water content.

• Removes water content by freezing water particles.

Which food preservation technique works by heating and sealing food in an airtight container?

• Vacuum Sealing.

• Dehydrating.

• Canning.

• Sun-Drying.

How does freezing work to preserve food?

• Provides an acidic environment.

• Removes oxygen exposure.

• Removes water content.

• Removes water content by freezing water particles.

How does adding sugar work to preserve food?

• Water content is decreased.

• Removes oxygen exposure.

• Provides an acidic environment.

• Freezes the water content in food.

Which food preservation technique works by reducing oxygen exposure to food?

• Vacuum Sealing.

• Dehydrating.

• Sun-Drying.

• Freezing.

Which food preservation technique works by providing an acidic environment?

• Adding Sugar.

• Sun-Drying.

• Adding Lactic Acid.

• Pickling.

Which of the following are not examples of food preservation techniques.

• Adding Sugar, Dehydrating & Pickling.

• Freezing, Adding Lactic Acid & Dehydrating.

• Adding Salt, Canning & Vacuum Sealing.

• Baking, Frying & Boiling.

What three things do bacteria and mould need to grow?

• Moisture, Time & Oxygen.

• Moisture, Oxygen & Air.

• Food, Moisture & Time.

• Food, Moisture & Oxygen.

Which of the following are types of food spoilage?

• Chemical.

• Physical.

• Microbial.

• All of the Above.

What is a disadvantage of preserved foods?

• The food is old.

• It tastes bad.

• It looks unappealing.

• The nutritional value of the food is altered.