Bile - produced by liver and stored in the gall bladder - released into the duodenum - when gall bladder contracts. in small intestine - bile emulsify fats. They lower surface tension of the fats → they reduce attractive forces between fat molecules. this causes large fat globules to break up into tiny fat droplets suspended in water - which forms an emulsion. Note: this is just a physical break up, there is no chemical digestion of fats here. emulsification - increases SA to V ratio of fats to enzyme action - speeding up their digestion by lipase.
Emulsified fats - are digested by lipases (pancreatic and intestinal) into fatty acids and glycerol

Definition
Emulsification is the breaking of up fats into tiny fat droplets #BiologyDefinitions
NOTE: Bile salts are not affected by boiling or high temperatures