FOOD PROCESSING AND PRESERVATION
THERMAL PROCESSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Uses microbes like yeast, mold & bacteria to preserve and change the state of food.
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A process in which food is prepared and then frozen.
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The process of removing water from foods.
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A form of heat processing that destroys pathogens.
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Detailed explanation-1: -freezing, in food processing, method of preserving food by lowering the temperature to inhibit microorganism growth. The method has been used for centuries in cold regions, and a patent was issued in Britain as early as 1842 for freezing food by immersion in an ice and salt brine.
Detailed explanation-2: -Freezing delays spoilage and keeps foods safe by preventing microorganisms from growing and by slowing down the enzyme activity that causes food to spoil. As the water in the food freezes into ice crystals, it becomes unavailable to those microorganisms that need it for growth.
Detailed explanation-3: -There are two main types of freezing system: mechanical (which use a circulating refrigerant to reduce the temperature of air or a liquid which is passed over the food) and cryogenic (which use the direct application of liquid nitrogen or carbon dioxide onto the food).