... methanolysis but for waste fats, alternative processes that not use base catalysis may be preferred Lipase catalyzed methanolysis is less sensitive to fatty acid and water in the oil and has been tested ... has been extensively reviewed (19, 22 , 23 ) Biodiesel is produced on the industrial scale by methanolysis of vegetable oils (usually rape or soybean) or waste fat, particularly using frying oils ... follow the same kinetics as the simple esters and oxidizes somewhat faster The medium also influences susceptibility to oxidation, and these generalizations may not hold in emulsified systems (e.g.,...