How does fat carry out metabolism in the body?
The process of fat metabolism is very active, continuous. Under normal circumstances, as the fat in food get into the body, at first, with the help of bile, the big fat molecules of fat will be emulsified into fat particles, and then intestinal lipase decompose these small particles into the free fatty acids which will get into the blood through the small intestine and be transported to the cells. Body fat constantly acquire free fatty acids from the blood produced by decomposed food, and then will be free fatty acids in the cell will combain with α-glycerophosphate to produce triglyceride. Triglyceride generated by fat cells can also be broken down into glycerol and free fatty acids by lipase. Part of these free fatty acidscan be the re-released into the blood in the body for the use of other tissues and some will also be re- esterify into new fat. Nevertheless both of the esterification of free fatty acids in the fat cells or the hydrolysis of triglyceride need small energy, but free fatty acids released into the blood can provide sufficient energy for the liver and other tissues.
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