2 complete each sentence below. A) the first step in the separation scheme for m

Question

2 complete each sentence below.

A) the first step in the separation scheme for milk involves removing the curds by treating the milk with _____ and _____.
B) the curds are removed from the aqueous solution (whey) by ____ filtration.
C) _____ is removed from the curds by mixing the solids with ethyl acetate, leaving behind a relatively pure protein called _____
D) water soluble _______ are precipitated by heating the whey, leaving an aqueous mixture primarily composed of ______ and ______

3) explain why ethyl acetate, a nonpolar solvent, can be used to separate the nonpolar fats from the casein protein.

Explanation / Answer

A) the first step in the separation scheme for milk involves removing the curds by treating the milk with heat and vinegar

explanation-milk is heated .to 40 degree celcius before vinegar is added.Then the curd is rinsed with distilled water
B) the curds are removed from the aqueous solution (whey) by vacumm filtration.

[the casein protein turns into curd to be removed completely using vacumm filtration]
C) solution is removed from the curds by mixing the solids with ethyl acetate, leaving behind a relatively pure protein called casein.
D) water soluble protein are precipitated by heating the whey, leaving an aqueous mixture primarily composed of lactose and phosphates.

3) explain why ethyl acetate, a nonpolar solvent, can be used to separate the nonpolar fats from the casein protein.

Like dissolves like,means a non polar solvent like ethyl acetate interacts with a non-polar solute(casein) by dipole-dipole interactions.So,it is dissolved in ethyl acetate and gets separated from the rest polar aqueous solution.

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