NUTR 200 Lecture Notes - Lecture 5: Inflammation, Insulin, Wateraid

19 views3 pages
NUTR200
1 February 2017
Lipids
Energy
- 9kcal/gram
- Used for energy storage
- Energy source while at rest
- Used for energy during prolonged exercised
Role
- Essential to many body functions
o Cell membrane structure
o Nerve cell transmissions
o Protection of internal organs
o Insulation to retain body heat
- Fat soluble vitamins
o Vitamin A, D, E, K
o Required for their absorption and transport
- Provides flavor and texture to foods
- Makes us feel satiated longer to digest
What are lipids?
- Lipids = fats; diverse class of hydrophobic molecules (insoluble in water)
- 3 types found in body cells and tissues
o Triglycerides 3 fatty acids bound to a 3 carbon molecule
o Phospholipids 2 fatty acids and a phosphate group bound to a 3 carbon molecule
o Sterols
Structure
- Methyl (omega end)
o -CH3
- Carboxylic acid (alpha end)
o -COOH
Classifications
- Classified by length, level of saturation, shape
- Saturation no double bonds
- Chain length
o Short 4-8
o Medium 8-12
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows page 1 of the document.
Unlock all 3 pages and 3 million more documents.

Already have an account? Log in

Document Summary

Essential to many body functions: cell membrane structure, nerve cell transmissions, protection of internal organs. Fat soluble vitamins: vitamin a, d, e, k, required for their absorption and transport. Makes us feel satiated longer to digest. Lipids = fats; diverse class of hydrophobic molecules (insoluble in water) 3 types found in body cells and tissues: triglycerides 3 fatty acids bound to a 3 carbon molecule, phospholipids 2 fatty acids and a phosphate group bound to a 3 carbon molecule, sterols. Classified by length, level of saturation, shape. Saturation no double bonds: short 4-8, medium 8-12, long more than 12, determines lipid digestion, absorption, metabolism, most naturally occurring fatty acids have even chain lengths. Saturation no double bonds (maximum hydrogen atoms: found commonly in meats, tropical oils. Monounsaturated one double bond: commonly found in olive, peanut, canola oils. Polyunsaturated multiple bonds: two or more double bonds, found in safflower, coin, sunflower, nuts, some vegetable oils.

Get access

Grade+20% OFF
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers