Flashcards in BPK 110 Chapter 5 Deck (131)
How did the amount of fat intake change in Canada?
It moved from fat inadequacies to excesses
What are 6 examples of sources of fat?
What are triglycerides?
Main dietary lipid
Define Hydrophobic molecules
Nonpolar molecules that repel the water molecules
Is triglycerides hydrophobic?
What are triglycerides made out of? 2 things
A glycerol backbone
3 fatty acids
What are 3 things fatty acids vary in?
They have different:
Degree of saturation
What does degree of saturation in a fatty acid mean?
The number of hydrogen atoms attached to the fatty acid
What is an example of a saturated fatty acid?
What is an example of a monounsaturated fatty acid?
Oleic acid (omega-9)
What are two examples of a polyunsaturated fatty acid?
Linoleic acid (omega-6)
Alpha-linolenic acid (omega-3)
What are two things at each end side of the fatty acid?
Methyl or omega end
What is a difference between saturated fatty acid and unsaturated fatty acid?
Saturated fatty acids have no double bonds and that's why its most saturated with hydrogens
What is the difference between linoleic acid (omega-6) and alpha-linolenic acid (omega-3)?
Alpha-linolenic acid (omega-3) has more double bonds than linoleic acid (omega-6)
Where can longer chain of saturated fatty acid be commonly found in? 2 things
Solid at room temperature
What does high consumption of long chain saturated fats do? 2 things
Increase the risk of cardiovascular disease
Higher LDL, lower HDL
Where can medium chain saturated fatty acids be found in?
What is consider a medium chain saturated fatty acids?
A fatty acid with 6-12 carbons
What is consider a short chain saturated fatty acids?
A fatty acid with less than 6 carbons
What does high consumption of medium chain saturated fats do? 2 things
Improves body composition
Increase LDL and HDL
How is short chain saturated fatty acids produced?
It is produced when dietary fibre is fermented in colon
What is the effect of high consumption of short chain saturated fatty acids? 2 things
Promote colonic health
Reduce risk of cardiovascular disease
What are two similarities between medium and short chain saturated fatty acids?
Both are absorbed through the portal vein and both do not go into the lymphatic system, which makes them less likely to be stored.
What is the difference between the long chain saturated fatty acids and the other chains of saturated fatty acids?
Only the long-chain saturated fatty acids go through lymphatic system
What is considered a unsaturated fatty acids?
If it has one or more double bonds
Where are unsaturated fatty acids found in? 3 things
Liquid at room temperature
Plant based foods
What is considered a monounsaturated fat?
1 double bond
What is considered a polyunsaturated fat?
2 or more double bonds
What does consumption of monounsaturated fat do?
Positive effects on LDL cholesterol