ansc 221 - nutrients - lipids

lipids are soluble in…

organic solvents like ether

lipid categories (besides mono-, di-, triglycerides)

• phospholipids = glycerol + 2 FAs + P (connected w/ smth)

• glycolipids = lipid + sugar

• cerebrosides

  • present in nerve tissue

• waxes = FA + alcohol

  • not digestible but are analyzed in feeds

• steroids

  • hormones

  • cholestrol

• terpens

  • lipid soluble

  • includes vit A

fats contain __ as much energy as carbs

2.25x

metabolized fats contain __ kcal/g

9 kcal/g (most)

fats are made up of __, __, & __

carbon, hydrogen, & oxygen

fats contain less __ compared to carbs

oxygen

part of the reason why fats have more energy than carbs

triglycerides have __ glycerol & __ fatty acids

1 glycerol & 3 fatty acids

saturated fats

all the hydrogen it can have

solid fats

unsaturated fats

a double bond instead of hydrogen

liquid fat

*go rancid quicker than saturated fats because double bonds are more volatile/reactive

3 volatile fatty acids (VFAs)

acetic acid

propionic acid

butyric acid

saturated long chain FAs

palmitic & stearic acid

storage fats

1 long chain mono-unsaturated fatty acid that is non-essential

oleic acid

3 long chain polyunsaturated fatty acids (also the 3 essential fatty acids)

linoleic

linolenic

arachidonic

main functions of fats

energy & providing EFAs