Metabolism and Excretion

Metabolism and Excretion

1. the liver controls fat metabolism in the cells

2. fatty acids are broken down to CO₂ & H₂O , releasing energy

3. fat not needed stored as adipose

4. CO₂ & H₂O are removed as waste products from circulatory, respiratory & excretory systems

Phospholipids

1. found in both plants & animal foods, synthesized in liver

2. natural emulsifier helps transport fats in bloodstream -ie. lecithin

Fat alternatives

Olestra in potato chips

1. made from CHO's & fats

2. FDA approved for use in snack food but don't know long-term effects

3. Gov't requires that food labels indicate olestra inhibits absorption of some vitamins. & other nutrients

4. should be used in moderation or get side effects cramps & diarrhea

5. contains no calories

Simplesse

1. made from egg white & milk protein

2. can be used only in cold foods

Oatrim

1. CHO-based (oat fiber)

2. can be used in baking, but not frying