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Lipids/fats
Lipids/fats
44
Nutrition
Undergraduate 2
04/22/2014

Additional Nutrition Flashcards

 


 

Cards

Term
3 classes of lipids
Definition

triglycerides

sterols

phospolipids

Term
represents 95% of fat in foods and the body
Definition
triglycerides
Term
triglyceride functions (3)
Definition

energy

protection (insulates from injury and extreme temp changes.)

regulation

Term
major storage for of energy in body
Definition
fat
Term
triglyceride contents
Definition

glycerol

3 fatty acids

Term
2 types of unsaturated fatty acids
Definition

mono

poly

Term
2 types of fatty acids
Definition

unsaturated

saturated

Term
shapes of fatty acids
Definition

cis

trans

Term
short chain length
Definition
4-7 C
Term
medium chain leangth
Definition
8-12
Term
long chain length
Definition
>=12 C
Term
bonds saturated vs unsaturated
Definition

saturated=single bonds

unsaturated=double bonds (kinks)

Term
hydrogenation
Definition

process where unsaturated b/cms saturated turns

cis bonds to trans

making liquids harder

Term
2 essential fatty acids
Definition

linoleic acid

linolenic acid

Term
______ fatty acid is used to make EPA and DHA (omega 3 fatty acids found in certain fish.
Definition
linolenic acid
Term
functions of essential fatty acids (3)
Definition

gene expression

make other fatty acids (like DHA and EPA)

make eicosanoids (hormone like compounds)

Term
saturated fats is higher in.......
Definition
animal products
Term
unsaturated fats is higher in.....
Definition
plants
Term
omega 3's is found in
Definition
cold water fatty fish
Term
monounsaturated is fond in.............
Definition
avocados, canola oils, nuts, seeds, olive and olive oil
Term
monounsat benefits..
Definition
dec oxidation of cholesterol= dec in inflammation and plaque development.
Term
omega 3 fatty acid benefits (4)
Definition

dec inflammation and plaque formation

dec VLDL

dec bp

Term
saturated fats
Definition

dec ldl receptors= inc in blood LDL

 

Term
trans fat
Definition

inc LDL

dec HDL

inc inflammation

Term
phospholipid contents
Definition

phosphorus containing compound (phosphatidyl choline/lecithin)

2 fatty chains

glycerol

Term
phospholipids are amphipathic meaning......
Definition
the have hydrophobic regions(tail) and hydrophilic regions (head).
Term
phospholipid functions in foods
Definition
emulsifier mising water and fat
Term
phospholipid functions in the body
Definition

production of other compounds

cell membrane structure

movement of nutrients in and out of cell

call signaling

Term
main sterol in the body
Definition
cholesterol
Term
cholesterol is mostly found in the body attached to what fatty acid
Definition
cholesteryl ester
Term
sterol functions to.....
Definition

to make steroid hormones, bile, myelin

and for the cell membrane

Term
sterol food sources
Definition

animal foods (high in organ foods-brain, liver)

 and seafoods

not in plants

 

 

Term
sterol is found in what 2 forms in foods
Definition

free

attached to choletyrl ester

Term
sterols found in plants are called
Definition
phytosterols and are not equal to cholesterol some inhibit cholesterol absorption.
Term
AMDR for fat intake
Definition

20-35%

 

<10% from saturated

cholesterol <300mg/day

Term
triglycerides digestion in the mouth is by....
Definition

lingual lipase

(removes fatty acid from 3rd C = a free fatty chain and a giglyceride)

Term
triglycerides digestion in the stomach
Definition

gastric lipase

(same as lingual lipase)

Term
small intestines digestion of triglycerides is by....
Definition

bile from liver-emulsifier

pancreatic lipase from pancreas (hydrolysis=2 free fatty chains and monoglyceride) 

Term
end products of triglyceride digestion
Definition

monoglyceride

free fatty chains

Term
phospholipid digestion in small intestines is by
Definition
phospholipase A2
Term
phospholipase a2 hydrolyzes the 2nd C off the chain forming......
Definition

free fatty chain

lysophospholipid

Term
endproducts of phospholipid digestion
Definition

free fatty chain

lysophospholipid

Term
4 types of lipoproteins
Definition

chylomicrons

HDL

LDL

VLDL

Term
2 main fatty acid uses
Definition

energy production

storage in fat cells

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