34 Handbook of Food Science and Technology 3
of low-heat skimmed milk powder and the production of reduced whey protein
content skimmed milk powder prepared by combining microfiltration and
ultrafiltration.
Figure 1.14.
Processing diagram for the production of skimmed milk
powder by microfiltration and ultrafiltration (Primin
®
powder)
1.3.3.2.
Physical properties of milk powders
The quality of milk powder depends on many factors,
including milk
quality before drying and the implementation of the drying process itself.
[PIS 81] and [MAS 91] classified the main properties of milk powders into
two categories (Figure 1.15):
– properties inherent to the product (biochemical, microbiological, etc.);
– properties inherent to the process (functional properties and any defects).
From Milk to Dairy Products 35
Figure 1.15.
Main properties of milk powders [PIS 81, MAS 91]
Particle size
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