Chemistry Reference
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3
2.5
low pH
high pH
2
1.5
reference sample
medium pH
1
0.5
0
0
2.5
5
7.5
10
12.5
15
Time
Figure 3 Average cluster size of the whey proteins during the heating process under
different conditions. In all cases mainly dimers are formed, and some larger
clusters. The high pH system is similar to the reference one; at medium pH the
clusters are somewhat smaller; at low pH they are somewhat larger
70
60
medium pH
50
high pH
40
30
20
low pH
10
0
0
2.5
5
7.5
10
12.5
15
Time
Figure 4 Number of bonds formed between the small particles and the surface of the large
particle. In the medium pH and high pH systems, a coating is formed. The
surface area covered is significantly larger only in the medium pH system
whey particles manage to overcome the relatively low potential barrier, and
stay long enough in proximity of the casein micelle to form a bond. Note that
the binding probability, once they have crossed the barrier, is quite high.
Moreover, the binding possibility is checked at each time step rather than for
each collision event. In diffusive motion the concept of a single collision is a
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