Contains which elements?
Hydrogen, Oxygen, Carbon, nitrogen.
About 16% of our body weight
smallest units are called
Also known as
building blocks of protein.
Energy= 4 cal/g
Recycled by the body so, need less in amts. Compared to other macronutrients.
All amino acids have the same structure except for the "R" group which varies.
In our 20 amino acids
our bod can make from other amino acids
2 amino acids=
Need to consume!!
If toddler or younger... 9 essentials
More than 2 amino acids= Polypeptide
1 or more EAA
Can combine foods to make complete, known as
Examples: chickpeas and sesame, PB, Beans, rice
Proteins are vital structures and working material of
all living things.
Examples: muscles, tendons, ligaments
Proteins in food
contains all 8 EAA
Most come from animal sources
1st primary amino acids
How many amino acids
20 amino acids
In nature= Over 150 have been found in... plants, animals, fungus, single- celled organisms
Describe the difference between complete and incomplete proteins.
Incomplete missing 1 or more essential AA's
Protein denaturation (Complex to simple)
chewing, hydrochloric acid (in stomach), mixing + hormones in intestines, Enzymes, Marinades (acid + alcohol), heat, fire, mixing + cutting pounding.