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Extraction of caffeine from tea

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Why is sodium chloride added to the tea solution before extracting with ethyl acetate? 4 grams of calcium carbonate was added to 90 ml's of water in a flask, then was boiled and poured over tea bags. After squeezing out the liquid sodium chloride was added to this solution I need to know why.

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After coming in contact with an aqueous solution, an immiscible organic solvent will become saturated with a small amount of dissolved water. This residual water must be removed before isolating the product from the organic solvent. There are several ...

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