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FT 114 - Dairy Products Technology | Jan Isobel Hidalgo | SY 14-15 Physical Properties of Milk Physical Property A physical property is any property that is measurable whose value describes a state of a physical system.
description
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FT 114 - Dairy Products Technology |
Jan Isobel Hidalgo | SY 14-15
Physical Properties of Milk
Physical Property
A physical property is any propertythat is measurable whose value describesa state of a physical system.
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FT 114 - Dairy Products Technology |
Jan Isobel Hidalgo | SY 14-15
Physical Properties of Milk
Appearance
Density
Freezing Point
pH
Appearance
Color
Bluish white to brownish yellow
Colloidal dispersion
Breed and feed of the cow
Milk Color
Yellowish color
Carotene and riboflavin (vitamin B2)
Greenish yellow of whey
Riboflavin
Influenced by diet (cows feed)
Breed
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FT 114 - Dairy Products Technology |
Jan Isobel Hidalgo | SY 14-15
Density
1027 1033 kg/m3 at 20C
Density of milk varies with fat, SNF
values and the temperature of the milk
checked
convert volume into mass and vice versa
estimate the solids content
calculate other physical properties
Freezing Point
-0.512 to -0.550 C
Depends largely on the lactose, protein and mineral content
Used to determine adulteration of water
Determine lactose content in milk, estimate whey powder contents in skim milk powder
pH
6.5 6.7
Low pH means presence of lactic acid bacteria
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FT 114 - Dairy Products Technology |
Jan Isobel Hidalgo | SY 14-15
Guernsey Jersey
Holstein Ayrshire
