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Aggregation of beta-lactoglobulin and influence of D2O
M Verheul1, S P Roefs, K G de Kruif
1Netherlands Institute for Dairy Research (NIZO), Ede.
FEBS Letters
|February 19, 1998
Abstract:
The conformational stability of beta-lactoglobulin increases in D2O over that in H2O. This is concluded from an increase in peak temperature by about 3 degrees C of differential scanning calorimetry (DSC) thermograms and from a decrease in overall aggregation rate. However, effects of pH and salt concentration on the heat-induced aggregation (reaction kinetics, DSC thermograms and aggregate growth) are similar in H2O and D2O. This indicates that the mechanism of heat-induced aggregation of beta-lactoglobulin is not significantly affected by replacement of H2O with D2O.