A New Affinity Matrix Synthesized from Aminobenzohydrazide Derivatives for Purification of Lactoperoxidase Enzyme

Abstract

In this study, a new affinity process was developed for the purification of Lactoperoxidase with synthesized sixteen aminobenzohydrazide derivatives. For this purpose, ligands were covalently bound to CNBr-activated Sepharose-4B-L-tyrosine matrix and affinity columns were prepared, and LPO was purified in one step with high yield and purity. Among all synthesized molecules, the 4-amino-3-bromo-2-methylbenzohydrazide molecule had a high usable potential in the purification of Lactoperoxidase from mammalian milk. Lactoperoxidase was purified 411.8 times with a yield of 17.38 % from goat milk, 187.25 times with a yield of 9.72 % buffalo milk, 2772.4 times with a yield of 18.98 % from bovine milk, and 1246.65 times with a yield of 4.43 % from sheep milk. It was demonstrated for the first time that aminobenzohydrazide molecules could be used as ligands in the purification of Lactoperoxidase enzyme.