Preservatives used and their mechanism of action — task. Science TNSB Mentoring, Class 9.

Choose all the appropriate options:

1. In salting, water is removed from the food by

heating
chilling
osmosis
all of the above

2. Synthetic preservatives preserve the food by

interfering with cell membrane of the microorganism
decreases the shelf life of foods
acts as an antioxidant
interfering with enzyme activity of the microorganism

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