The fatty acid methyl esters are produced by methanolysis of fats and oils, using acidic or alkaline catalysts, enzymes and without a catalyst in supercritical conditions for methanol [2–8]. There are three stepwise reactions [9]: partial methanolysis of the triglyceride (TG) to form the diglyceride (DG), partial methanolysis of DG to form the monoglyceride (MG), and partial methanolysis of MG to form glycerol (G). In each one of the three reactions a molecule of methyl ester (EM) is formed