水解 & 縮合

水解作用(hydrolysis)
這是一個分解分子的過程,如雙糖。雙糖分子太大人體不能直接吸而則比較容易吸收收所以雙糖要利用水解作用分解成為兩個單糖分子,而在這個過程中需要一個水的分子。C12H22(雙糖)+H2O -->(催化劑) 2C6H12O6(單糖)
多糖也是如此,夕糖利用水解作用會分解成多糖和單糖,因為在這過程中需要加上一個水分子, 所以叫做水解作用。

縮合作用(condensation)
兩個單糖分子可以組成一個雙糖分子,在這個過程中會釋出一個水分子
2C6H12O6(單糖)-->(催化劑)C12H22O12(雙糖)+H2O
多糖也可以用這個方法產生
多餘的碳水化合物會被縮合成多糖(糖原)以便存於體內
蛋白質也是一樣,兩個氨基酸分子用縮合作用縮合成二肽,而多個氨基酸會縮合成多肽。而每個蛋白質分子是由多於一個多肽縮合成的

About hydrolysis & condensation have been explained by the freind . But what are the main fuctions of them in our body that I want to cover breifly here . Hydrolysis is the breaking down process so incoming complex surgars , lipids or proteins can be broken by special enzymes to their basic matters such glycose , amino acid & etc for further uses . However condensation is the building up process to tranfer the basic units back to protein or fat & etc for muscle , storage fat & etc . All these involving a lot of special enzymes & the normal processes are vital to our healthy body .

2010-08-27 17:31:56 補充：
not glycose but glucose