FOOD PROCESSING AND PRESERVATION
FOOD PRESERVATION METHODS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following methods remove oxygen?
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Bottling
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Removing the air from sausages before freezing them
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Vacuum packaging
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All of the above
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Explanation:
Detailed explanation-1: -Removal of oxygen: Metal ores which are oxides are reduced to the metal-this is how iron is made from iron ore. The reducing agent is carbon monoxide. Copper oxide can be reduced to copper by heating it while passing hydrogen gas over it.
Detailed explanation-2: -You can use the freeze /thaw method to remove dissolved oxygen from a solution. This is the best way to get rid of oxygen. First you freeze your reaction mixture using liquid nitrogen, then pull vacuum for few min while it is frozen.
There is 1 question to complete.