Dehydration reaction
chemical reaction which produces water
In chemistry, a dehydration reaction is a chemical reaction that involves the loss of an H2O from the reacting molecule(s) or ion(s). This reaction results in the release of the H2O as water. When the reaction involves the coupling of two molecules into a single molecule it is referred to as a condensation reaction. Dehydration reactions are common processes in the manufacture of chemical compounds as well as naturally occurring within living organisms.
The reverse of a dehydration reaction is called a hydration reaction. The reverse of a condensation reaction yielding water is called hydrolysis.
Condensation reactions occurring in living organisms
Condensation dehydration reactions are fundamental to the existence of life as this type of reaction produces proteins from amino acids, DNA and RNA from nucleotides, fats from fatty acids, and polysaccharides (e.g. cellulose, starch, sugar, lactose) from monosaccharides (e.g. glucose and fructose).
The formation of the pyrophosphate bond is an important dehydration reaction relevant to bioenergetics.
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