Breakdown:

The initial event in the utilization of both stored dietary and fat, fat as energy sources is the hydrolysis of triacylglycerol through lipases. These enzymes release the three fatty acid chains from the glycerol backbone. The fatty acids can then be broken down in β-oxidation to produce energy. The glycerol backbone is also utilized, being altered into dihydroxyacetone phosphate, an intermediate in glycolysis. This needs two enzymes, glycerol kinase, that uses ATP to producing L-glycerol 3- phosphate, phosphorylate glycerol and glycerol 3-phosphate dehydrogenase that generate dihydroxy- acetone phosphate.

In  the  intestine,  dietary  fats  are  hydrolyzed  through  pancreatic  lipase  and  the released  fatty  acids  taken  up into  the intestinal  cells.  Both the digestion and uptake procedure are aided through the detergent-like properties of the bile salts.