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What is percolation extraction?

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+1 vote
in Food Processing Unit Operations by (110k points)
What is percolation extraction?

(a) A method of extraction by gravity

(b) A method of extraction by filtration

(c) A method of extraction by sedimentation

(d) A method of extraction by distillation

I have been asked this question in unit test.

The doubt is from Contact Equilibrium Separation Process in division Contact Equilibrium Separation Process of Food Processing Unit Operations

1 Answer

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Correct answer is (b) A method of extraction by filtration

Easiest explanation: The active compound from a product is derived through percolation method.The solvent is passed over a bed of substance which helps in the liquid extract, and this liquid extract is then recirculated through the bed for a period of time.

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