Lipid metabolism I Triacylglycerols Milk is an emulsion of triacylglycerols in water Hydrolysis of lipids by pancreatic lipase Four natural tensides work in fat digestion A pictogram of phospholipid shows one polar head and two nonpolar tails 3 The -Oxidation of acyl-CoA Distinguish: three types of lysis Distinguish ! Compare Linguistic analysis: 9,12,15-octadecatrienoic acid (α-linolenic)