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Milk Composition and Biosynthesis- Anatomy & Physiology (view source)
Revision as of 10:41, 30 July 2008
, 10:41, 30 July 2008→Fat
== Fat ==
== Fat ==
[[Image:The Lactating Mammary Cell.jpg|thumb|right|150px|The Lactating Mammary Cell,Copyright RVC 2008]]
* Comprises 1-30% of milk.
* Comprises 1-30% of milk.
** Synthesised in the smooth endoplasmic reticulem, then packaged into lipid droplets, which increase in size as they move towards the plasma membrane. Eventually they pinch off and enter the milk as fat globules surrounded by membrane.
** Synthesised in the smooth endoplasmic reticulem, then packaged into lipid droplets, which increase in size as they move towards the plasma membrane. Eventually they pinch off and enter the milk as fat globules surrounded by membrane.
** Globules consist mainly of triacylglycerols surrounded by a membrane containing cholesterol and phospholipid. The membrane is derived from the mammary gland plasma membrane as the globules pinch off. Globules also contain the fat soluble vitamins (D,K,E)
** Globules consist mainly of triacylglycerols surrounded by a membrane containing cholesterol and phospholipid. The membrane is derived from the mammary gland plasma membrane as the globules pinch off. Globules also contain the fat soluble vitamins (D,K,E)
== Protein ==
== Protein ==