Journal of Biological Sciences1727-30481812-5719Asian Network for Scientific Information10.3923/jbs.2008.1310.1315Bubalus bubalis) Lactoperoxidase Activity in Raw Milk]]>Tayefi-NasrabadiH. AsadpourR. 8200888Inactivation kinetics of buffalo milk lactoperoxidase
toward thermal processes was studied at isothermal condition over a range
of 67 to 71°C. The analysis of inactivation rate constant data for
the process of thermal denaturation of lactoperoxidase showed good agreement
with a first-order reaction. Based on the thermal death time model, which
describes first-order heat inactivation kinetics in the area of food processing
and preservation, D-values and z-value (2.45°C) were obtained. Thermodynamic
parameters were also calculated. The high values obtained for activation
energy (920.43 kJ mol-1) and change in enthalpy of activation
(~917 kJ mol-1) indicate that lactoperoxidase is one of the
most heat stable enzymes in buffalo milk which high amount of energy is
needed to initiate its denaturation. The mean buffalo lactoperoxidase
activity in raw milk also was found 16.84 U mL-1.]]>Althaus, R.L., M.P. Molina and M. Rodriguez,20018418291835Anema, S.G. and A.B. McKenna,199644422428Asadpour, R., H. Tayefi-Nasrabadi, G.A. Moghadam and K. Nofouzi,20087777779Barrett, N.E., A.S. Grandison and M.J. Lewis,1999667380Bjorck, L.,19921992pp: 323-338pp: 323-338Ludikhuyze, L.R., W.L. Claeys and M.E. Hendrickx,20016895107Conner, G.E., M. Salathe and R. Forteza,2002166S57S61Dewit, J.N. and A.C.M. Van Hooydonk,199650227244Fonteh, F.A., A.S. Grandison and M.J. Lewis,200269401409Fox P.F. and A.L. Kelly,200616500516Gothefors, L. and S. Marklund,19751112101215Haddadin, M.S., S.A. Ibrahim and R.K. Robinson,19967149152Martin-Hernandez, M.C., B.W. Van Markwijk and H.J. Vreeman, 199044213231Kumar, R. and K.L. Bhatia,199979269274Kussendrager, K.D. and A.C.M. van Hooijdonk,200084S19S25Le Nguyen, D.D., M.N. Ducamp, M. Dornier, D. Montet and G. Loiseau,20056814971500Marin, E., L. Sanchez, M.D. Perez, P. Puyol and M. Calvo,2003688993Marks, N.E., A.S. Grandison and M.J. Lewis,200191735741Medina, M., P. Gaya and M. Nunez,19898147149Naidu, A.S.,20002000pp: 103-132pp: 103-132Olszewski, E. and H. Reuter,1992194235239Ozdemir, H., H.I. Hacibeyoglu and H. Uslu,200232143155Perraudin, J.P. and B. Reiter,19981998pp: 326332Sermon, J., K. Vanoirbeek, P. De Spiegeleer, R. Van Houdt, A. Aertsen and C.W. Michiels,2005E. coli.]]>156225232Shakeel-ur-Rehman and N.Y. Farkye,20022002pp: 939-941pp: 939-941Silanikove, N., F. Shapiro, A. Shamay and G. Leitner,20053811391151Stephens, S., R.A. Harkness and S.M. Cockle,1979Escherichia coli.]]>60252258Tenovuo, J.O.,200282329Touch, V., S. Hayakawa, S. Yamada and S. Kaneko,2004Salmonella enteritidis in animal or vegetable foods.]]>93175183