18 Questions
What is the primary mechanism of freeze drying?
Sublimation of ice at low pressure
What is the primary function of solar drying in the food industry?
To minimize waste and reduce drying time
What is the principle behind osmotic dehydration?
Removal of water due to osmotic pressure difference
What is the purpose of salting and brining in food preservation?
To draw out moisture and inhibit microbial growth
What is the primary advantage of solar drying over sun drying?
Solar drying is faster
What is not mentioned as a technique of food preservation in the text?
Controlled Atmosphere Storage
What is the process of removing moisture from produce through the application of heat from air flow?
Convection Drying
What is the process of preserving food by reducing the water content using a concentrated solution?
Osmotic Dehydration
What type of storage method regulates temperature, humidity, and gas concentrations to preserve food?
Controlled Atmosphere Storage
What process uses the sun's heat to dry fruits and vegetables?
Solar Drying
What is the process of preserving food by freezing the water content and then reducing the surrounding pressure to allow the frozen water to sublimate?
Freeze-Drying
What method of food preservation is based on exposing food to temperatures below its freezing point?
Freezing
What type of products commonly use active packaging?
Fresh fruit, vegetables, meat, and fish
What three gases are commonly used in active packaging?
Oxygen, carbon dioxide, and nitrogen
What is the ideal temperature range for storing fresh fruits and vegetables?
32 to 55°F
What is the purpose of high pressure processing in food preservation?
To apply intense pressure to kill pathogens and spoilage organisms
What is the role of ozone gas in food preservation?
To sanitize produce and extend shelf life
What is the purpose of pulse electric field treatment in food preservation?
To inhibit microbial growth and extend shelf life
Learn about food preservation techniques including freezing and controlled atmosphere storage methods. Understand how freezing point affects food properties and how to control atmosphere conditions for storage.
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