Dairy Chemistry And Biochemistry

22 DAIRY CHEMISTRY AND BIOCHEMISTRY

5

3

0 10 20 30 40 50 60

Week

Figure 2.1 Changes in the concentrations of fat (A), protein (0) and lactose (0) in milk during

lactation.

Table 2.2 Average concentration (%) of lactose and ash in the

milks of some mammals

Species Water Lactose Ash

Human 87.4 6.9 0.21

cow 87.2 4.9 0.70

Goat 87.0 4.2 0.86

Camel 87.6 3.26 0.70

Mare 89.0 6.14 0.51

Reindeer 63.3 2.5 1.40

for abnormal milk:

YO Chloride x 100

Koestler number =

YO Lactose

A Koestler number less than 2 indicates normal milk while a value greater

than 3 is considered abnormal.

Lactose plays an important role in milk and milk products:

products;

0 it is an essential constituent in the production of fermented dairy