Abstract
A reaction kinetic approach for the description of reversible (unfolding) and irreversible (aggregation) denaturation of lactoglobulin (Lg) was developed in this study. This novel approach allows the calculation of the content of native, partially unfolded and irreversibly denatured Lg as a function of the heat treatment time. Moreover, it is able to give a mathematical interpretation of the sharp bend on the Arrhenius plot of the formal denaturation rate constant which is characteristic of the denaturation behaviour of both major whey proteins, a-lactalbumin and lactoglobulin. The developed theoretical backgrounds were applied for the denaturation kinetics of Lg in a protein solution containing 50 g L-1 of the isolated whey protein fraction and verified by means of differential scanning calorimetry.
| Original language | English |
|---|---|
| Pages (from-to) | 301-315 |
| Number of pages | 15 |
| Journal | Dairy Science and Technology |
| Volume | 87 |
| Issue number | 4-5 |
| DOIs | |
| State | Published - Jul 2007 |
Keywords
- Aggregation
- Reaction kinetic
- Thermal denaturation
- Unfolding
- β-lactoglobulin
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