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The term lipid , which comes from the French word lipid, is used to refer to organic compound that is formed from the esterification from alcohols with fatty acids .

Remember that a alcohol It is a compound that has the hydroxyl group linked to an aliphatic radical or a derivative. A fatty acid , meanwhile, it is an organic acid combined with glycerin for fat development. The idea of esterification Finally, it is linked to the creation of an ester through the union of an alcohol and a acid .

Retaking specifically the idea of lipid , It is a organic molecule composed mostly of carbon and by hydrogen . In a lower quantity it contains oxygen and you can also submit nitrogen , sulfur or match .

Lipids, which cannot dissolve in water (they are hydrophobic ), develop important functions in living beings. They serve, for example, as a reserve of Energy since, through a metabolic oxidation reaction, they produce calories.

On the other hand, lipids contribute to thermal regulation of the body , favor the development of various chemical reactions and even collaborate with the protection and formation of organs.

When grouped together, the cells that are responsible for the accumulation of lipids (called adipocytes ) form the tissue adipose . This tissue helps keep internal organs and other structures in place and also protects them. It also constitutes a lipid reserve.

It is important to keep in mind that fat They are a specific class of lipids. Therefore, using both concepts as synonyms is not correct, since there are lipids that are not fat.

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