View Full Version : Can someone explain saturated fat?
04-06-2002, 02:06 PM
Can someone give me a quick rundown of what happens when fat is digested and how saturated fat differs?
04-06-2002, 02:55 PM
Fat or oil is formed when one gycerol molecule reacts with three fatty acid molecules. A saturated fatty acid has no double bonds between carbon atoms (the fatty acid chain, is usually saturated with hydrogen molecules). Saturated fat accounts for the solid nature of butter and lard at room temperature. Okay, fat is complelety digested and absorbed in the small intestine. The gall bladder first releases bile, which acts as an emulsifier, and breaks down the fat molecule into droplets. Then the enzyme pancreatic lipase (produced by the pancreas) digests the fat droplets into a glycerol and three fatty acids. These products are rejoined, packaged as lipoprotein droplets and enter the lacteal of the villi ( basically what I'm tryin to say there is that, the small villi lining the intestinal wall, absorb the glycerol and fatty acids).
Firstly fats are digested slowly, up to 10 g per hour. Fats are broken down into different components such as fatty acids, glycerol and cholesterol.
Fatty acids and cholesterol are carried around in the blood system to the bodies cells where they are absobed and .
Excess fats and cholesterol that are not needed by the body cells
(ie caused by overeating) remain in the blood system until they can be taken to the body's fat storage sites or metabolised in the liver.
Fats are comprised of carbon, hydrogen and oxygen, the hydrogen atoms attach to some or all of the carbon atoms.
When all the carbon atoms have hydrogen atoms attached to them they are literally 'saturated' with hydrogen atoms and these types of fats are unsurprisingly called saturated fats.
Saturated fats are hard at room temperature and have a tendency to stick together, thus making your blood stickier and increasing the stress on your heart.
Unsaturated fats do not tend to stick together and have a lower melting point than saturated fats.
You should also be aware that all carbohydrate you eat is converted to sugar and excess sugars are in turn converted to saturated fats by the body.
04-06-2002, 08:52 PM
Thanks a ton for those 2 very desciptive explanations:)
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