HUMAN NUTRITION

Detailed explanation-1: -The energy value of digestible carbohydrates is generally accepted as 4 kcal/g for both sugars and starches. Fermentation of fiber in the gut will produce SCFAs that contribute calories, generally estimated to be ∼2 kcal/g.

Detailed explanation-2: -Carbohydrate Calories The average for carbohydrate is given as 4.2 kcal per gram gross energy, and the net energy for humans is the same. There is no way to give the exact calories per gram of carbohydrate, though. The actual amount of energy from any carbohydrate varies depending on the shape of the molecule.

Detailed explanation-3: -One gram of carbohydrates yields four kilocalories of energy for the cells in the body to perform work. In addition to providing energy and serving as building blocks for bigger macromolecules, carbohydrates are essential for proper functioning of the nervous system, heart, and kidneys.