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Question
Give reason for the following.
Fresh milk is boiled before consumption while processed milk stored in packets can be consumed without boiling.
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Solution
Fresh milk is boiled before consumption to kill the microorganisms that could be present in it. But packed milk is pasteurised and boiled at 70°C for 30 sec followed by sudden : chilling then stored.
Thus, it can be consumed without boiling. Pasteurisation kill all microorganisms for making it free of any contamination.
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