The greatest amount of energy would be obtained by the oxidation of 100kg of

A.

Meat

B.

Butter

C.

Sugar

D.

Biscuit

Correct answer is B

Butter is about 80% fat, and the rest is mostly water and each gram of fat provides twice as much energy as carbohydrates or proteins. It is very high in saturated (about 70%) fatty acids, and contains a fair amount of monounsaturated fatty acids (about 25%).

The most abundant chemical in meat is water, followed by protein, then fat. Carbohydrates, minerals, and vitamins occur in much smaller amounts but, nevertheless, are very important metabolically and nutritionally.