BIOTECHNOLOGICAL METHODS FOR THE UPGRADING AND MODIFICATION OF ANIMALWASTE FATS

The possibility of producing monoacyloglycerols (MAGs) from poultry fa t or beef tallow using selected microorganisms or enzymatic glycerolys is was established. The highest content of MAGs (16.21 - 17.63% w/w) i n the lipids was obtained after the cultivation of Candida lipolytica on a medium with poultry fat. The concentration of MAGs in the lipids which remained in the medium was influenced by the microorganisms stra ins and their cultivation conditions. The yield of MAGs obtained by th e enzymatic glycerolysis of poultry fat or beef tallow ranged from 3.5 2% to 55.10% w/w, respectively.