Chapter 5: Fats Flashcards
bile is a
lipid
functions of fats
-energy (unlimited storage)
-protection (organs)
-insulation (temp)
-transport of nutrients/vitamins
-hormone regulation (synthesis)
-nervous transmission
-components of cell membrane
functions of food
-flavor & aroma
-texture
-satiety
-carry fat soluble vitamins
-source of essential fatty acids
indication of a crossover study
they’re their own controls (compare before and after)
why is fat a good choice sometimes
we need it to absorb fat soluble vitamins
are lipids soluble in water
no, insoluble
which lipids give us energy
triglycerides and fatty acids
three classes of lipids
-triglycerides and fatty acids
-sterols
-phospholipids
how much of our fat comes from triglycerides and fatty acids?
98%
saturated fatty acid (chem)
no double bonds, saturated with hydrogen
fatty acids have what ends?
omega end, and alpha end
monounsaturated fatty acid (chem)
one double bond
polyunsaturated fatty acid (chem)
has multiple double bonds
omega 3
double bonds begin on the 3rd carbon
omega 6
double bonds begin on the 6th carbon
omega end is a
methyl group
alpha end is a
acid group
what kind of fatty acids do we usually eat
triglycerides
what is a triglyceride
3 fatty acids connected at the carbon backbone
saturated fats state of matter
solid
monounsaturated fats state of matter
in-between solid and liquid
polyunsaturated fats state of matter
liquid (even in fridge)
saturated fats food sources
meats, animals
monounsaturated fats food sources
avacodos, olive oil, nuts
polyunsaturated fats food sources
fish, vegetable oil, nuts
saturated fats health implications
LDL fats, multiplesclerosis
monounsaturated fats health implications
reduction in LDL, less risk of cardiovascular disease
polyunsaturated fats health implications
decrease risk of cardiovascular disease
what type of fatty acid are omega 3 and 6?
polyunsaturated
omega 3 foods
fish, canola oil, soybean oil, flax seed oil
omega 6 foods
corn, saflour, soybean oil, mayo, margarine, nuts