More than 80 to 90% of the dietary lipids are triacylglycerols besides a small amount of phospholipids, cholesterol esters, free cholesterol, and free fatty acids. The main site of digestion and absorption of lipids is in the small intestinal lumen. Digestion of lipids in the mouth Although there is a small amount of lipase…
Digestion of dietary proteins involves the hydrolysis of peptide bonds catalyzed by proteases or peptidases in the gastrointestinal tract. Protein digestion takes place in the stomach and small intestine.
The major carbohydrates present in our diet is glycogen, starch, sucrose, lactose, maltose, fructose, and pentoses. Except for monosaccharides, all other carbohydrates need digestion before absorption. Carbohydrates digestion mainly takes place in the mouth and small intestine. Digestion in Mouth Digestion of carbohydrates begins at the mouth, where they come in contact with saliva….