Color:

• Milk ranges the color from yellowish creamy white (Cow milk) and creamy white (buffalo milk).
• Milk looks entirely opaque, but it is transparent while it is spread in thin layers.
• The opaque white color of milk is due to scattering of reflected light by the ultra microscopic particles of fat globules, colloidal calcium casinate and calcium phosphate in the fluid milk.
• The yellow color of cow milk is due to carotene pigment confined to the milk fat globules and therefore it is prominent in cream layer and in butter.
• Intensity of yellow color of cow milk depends on various factors such as breed, feed, size of fat globules, and fat percent of milk.
• Greater the amount of green feed intake that give deeper yellow color to milk.