INTRODUCTION TO FOOD TECHNOLOGY
HISTORICAL OVERVIEW OF FOOD TECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Provides an acidic environment.
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Removes oxygen exposure.
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Removes water content.
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Removes water content by freezing water particles.
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Detailed explanation-1: -How does the freeze-drying process work in preserving food? Freeze drying is a process that dehydrates frozen foods placed inside a vacuum. The moisture in the foods converts into a gaseous vapor that leaves the food during processing. This removal of water content from frozen food is called sublimation.
Detailed explanation-2: -Many people are not aware that even when food is frozen it still contains some liquid water due to the sugars and minerals that lower the water’s freezing temperature. “For example, 7 to 10% of the water in frozen meats remains in a liquid state even when storage temperatures are as low as-40° Celsius, ‘’ says Dr.
Detailed explanation-3: -It can be controlled by using a storage method that does not allow air to reach the product. Therefore, it is always advisable to remove as much air as possible from the freezer bag or container to reduce the amount of air in contact with the product being frozen.
Detailed explanation-4: -Drying or “dehydrating” food is a method of food preservation that removes enough moisture from the food so bacteria, yeast and molds cannot grow.