Nutrition Fats
Terms
undefined, object
copy deck
- Lipids:
- a diverse group of organic substances that are insoluble in water; lipids include triglycerides, phospholipids, and sterols
- Fatty acids-
- long chains of carbon atoms bound to each other as well as to hydrogen atoms
- Glycerol-
- An alcohol composed of three carbon atoms; it is the backbone of a triglyceride molecule
- Sterols
-
Cholesterol (major sterol)
Functions: important physiological function
- Cell membrane, bile, precursor to steroid hormones, vitamin D
-Manufactured by liver: 80%
- Consumed in food: 20%
- Saturated Fatty Acids
- (SFAs): Fatty acids that have no carbons joined together with a double bond; these types of fatty acids are generally solid at room temperature
- Monounsaturated Fatty Acids
- (MUFAs): Fatty acids that have two carbons in the chain bound to each other with one double bond; these types of fatty acids are generally liquid at room temperature
- Polyunsaturated Fatty Acids
-
(PUFAs): Fatty acids that have more than one double bond in the chain; these types of fatty acids are generally liquid at room temperature
→ Researchers have concluded that the scientific evidence showing that trans fatty acids negatively affect health is strong. Evidence links trans fatty acid consumption to heart disease.
- Lipoprotein:
- A spherical compound in which fat clusters in the center and phospholipids and proteins from the outside of the sphere.
- Identify the components of the Mediterranean Diet
-
Why is it popular? Lower risk of CVD for people in Mediterranean countries, changes in focus from low fat to type of fat
Focus foods: Whole grain, vegetables, legumes, feta cheese or plain yogurt, olives and olive oil, fish, fruit, chicken, very little red meat
- Triglycerides
- Fats and Oils
-
Digestion of Fats:
Mouth - Minimal (lingual lipase)
-
Digestion of Fats:
Stomach - Minimal (gastic lipase)
-
Digestion of Fats:
Small Intestine - Most (Pancreatic Lipase)
-
Digestion of Fats:
Accessory Organs (3) -
1. Liver- produces bile
2. Gallbladder- stores bile
3. Pancreas- produces enzymes