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Nutrition through life Part 2 > Breast milk composition > Flashcards

Flashcards in Breast milk composition Deck (9)
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1

the majority of fat in milk is in what form?

TAG

2

What is the minor portion of fat made of?

DAG
MAG
cholesterol, cholesterol esters
FFA
phospholipids

3

How are milk lipids present? What form?

within membrane-enclosed fat globules
core=TAG
Membranes: phospholipids, cholesterol and proteins

4

What is the main source of energy in milk? Why?

TAG (fat)
low metabolic cost, only 1% is invested in order to store it
25% for carbs
also, using only carbs for energy --> can't have essential fatty acids

5

What does the location of fat synthesis depend on?

Chain length

6

Where are fatty acids shorter than 16C synthesized?

alveolar cells (made from glucose

7

Where do FA larger than 18C come from?

adipose tissue and diet

8

How do we stimulate the synthesis of lipids in the breast milk?

increase prolactin secretion (just before and during lactation) is gonna increase the activity of lipoprotein lipase in the mammary gland. This hydrolyses triglycerides and helps promote the uptake of FFA and chylomicron remnants.
also is gonna decrease lipoprotein lipase activity in maternal adipse tissue so that the adipose tissue takes up less FFA

9

What is the difference between human milk fat and bovine milk fat.

higher proportion of palmitate at 2-position