Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

    Records 1 - 6 / 6

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    Formation of homocitrulline during heating of milk.
    Metwalli, A.A.M. ; Lammers, W.L. ; Boekel, M.A.J.S. van - \ 1998
    Journal of Dairy Research 65 (1998)4. - ISSN 0022-0299 - p. 579 - 589.
    Heat Inactivation of Bovine Plasmin.
    Metwalli, A.A.M. ; Jongh, H.H.J. de; Boekel, M.A.J.S. van - \ 1998
    International Dairy Journal 8 (1998). - ISSN 0958-6946 - p. 47 - 56.
    The thermal behaviour of the protease plasmin was studied in the absence and presence of milk components. A global unfolding of the isolated plasmin occurred at 50-55oC, but secondary structure of plasmin increased with increasing temperature, possibly due to aggregation. Plasmin was reversibly inactivated between 55 and 65oC and was not subject to autoproteolysis. Irreversible inactivation (obeying first-order kinetics) started above 65oC with a temperature dependence typical for protein unfolding. Interaction with cystein caused irreversible (first-order) inactivation of plasmin from 45oC upwards; kinetics suggested a mixed mechanism of unfolding and SH/SS interaction. In agreement with literature, casein protected plasmin from irreversible inactivation while -lactoglobulin increased inactivation. Casein partly compensated the destabilizing effect of -lactoglobulin. The high heat stability of plasmin in milk products appeared not to be due to a high conformational stability, but to protection by casein towards irreversible inactivation of the unfolded enzyme.
    Effect of urea on heat-induced changes in milk.
    Metwalli, A.A.M. ; Metwalli, N.H. ; Boekel, M.A.J.S. van - \ 1996
    Netherlands Milk and Dairy Journal 50 (1996). - ISSN 0028-209X - p. 427 - 457.
    Effect of urea on heat coagulation of milk.
    Metwalli, A.A.M. ; Boekel, M.A.J.S. van - \ 1996
    Netherlands Milk and Dairy Journal 50 (1996). - ISSN 0028-209X - p. 459 - 476.
    Effect of urea on heat coagulation of milk.
    Metwalli, A.A.M. ; Boekel, M.A.J.S. van - \ 1995
    In: Proc. IDF Symp. on Heat treatments & alternative methods. Vienna, Austria - p. 335 - 340.
    Effect of formaldehyde on heat stability of milk.
    Metwalli, A.A.M. ; Boekel, M.A.J.S. van - \ 1995
    Netherlands Milk and Dairy Journal 49 (1995). - ISSN 0028-209X - p. 177 - 189.
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