Question

What is the function of bile salts in digestion?

Answer 1

Bile contains bile acids, which are critical for digestion and absorption of fats and fat-soluble vitamins in the small intestine. Many waste products, including bilirubin, are eliminated from the body by secretion into bile and elimination in feces.

Bile has the function of emusification,which acts as a soap,can break fat into small fat droplets.
Bile acid (salts) serve multiple functions, which include elimination of cholesterol from the body, driving the flow of bile to eliminate catabolites (catabolism= a set of metabolic pathways which breakdown molecules into smaller units & release energy. Large molecues such as polysaccharides, fatty acids, nucleic acids, and proteins are broken down into smaller units = monosaccharides, fatty acids, nucleotides & amino acids) from the liver, serving to emulsify lipids and, fat soluble vitamins in the intestine and ( likely) to aid reducing the bacteria flora found in the small intestine.
Bile is also used to break down fat droplets into tiny droplets.