Characteristics of essential fatty acids
Linoleic acid, linolenic acid, body cannot make the essential fatty acids, 5-10% of calories from linoleic and .6-1.2% from Linolenic
Describe polyunsaturated fatty acids
Have >1 double bond in the carbon chain, found in plant oils, liquid at room temp, some essential for the body
Describe monounsaturated fatty acids
Have 1 double bond in the carbon chain, are healthy, high levels in olive oil, semisolid when refrigerated, liquid at room temp
Describe saturated fatty acids
Have 0 double bonds between the carbons, are solid at room temp, unhealthy, found in animal products
What is caloric density
Refers to the calories yielded per weight of the substance
What are the categories of fats
Triglycerides, phospholipids, sterols
What is linoleic acid
Omega 6 fatty acid
What is Linolenic acid
Omega 3
How many calories should come from fats
20-35%
What are phospholipids used for
Make cell membranes