Lecture 2 Notes Flashcards
We don’t store what?
Proteins
Amino acid
Monomer or Protein
Deamination
Ammonia is detoxified by the liver and turned into
urea
Urea is excreted from the
Kidney
Where is nitrogen?
In any protein
Protein =
Hundreds of AAs
Classes of Amino Acids (20)
- Essential (Indispensable) amino acids: 9
- No essentials (Dispensable) amino acids: 5
- Conditionally indespensable amino acids: 6
Protein balance:
A normal urinary urea nutrition
Positive nitrogen balance:
Growth, pregnancy
Negative nitrogen balance:
Burns, serious tissue injuries, fevers, fasting
Functions of Protein:
- Energy
- Water balance
- Metabolism
- Body Defense system
- Tissue building
- Immune System
-Growth
Food sources of proteins: Complete proteins
Meat
Fish
Poultry
Seafood
Soy
Food sources of proteins: Incomplete proteins
Plant-origin foods
Grains
Legumes
Nuts
Seeds
Fruits
Vegetables
Vegetarian Diet
Must combine foods to cover all AAs needs
Types of vegetarian diets
- Lacto-ovo vegetarian
- Lacto-vegetarian
- Ovo-vegetarian
- Vegan
During a vegetarian diet…
…. Anemia and weak bones may result because the minerals are depleted by the Phytic acid (grains cereals etc.)
Nitrogen balance =
(intake = excretion)