How do bile salts emulsify fats?

Explanation

Fluid in the digestive tract is water based. The fats consumed by us forms large globules since they do not mix with water-based fluid. Bile juice produced by liver contains bile salts. The molecules of bile salts have one hydrophobic end and one hydrophilic end. Hydrophobic end mixes with fats while hydrophilic end mixes with water-based fluid. Thus, the large fat globules mix with water-based digestive fluid. This process is called emulsification of fats.