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Disaccharides | Examples | Structure

Disaccharides
PPTs of Chemistry for Tutors/YouTubers
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Disaccharides|Examples|Structure

“Such carbohydrates which yield two same or different monosaccharide units on hydrolysis with dilute acids or enzymes are called disaccharides”.

In disaccharides, the two monosaccharides are joined together by an oxide linkage formed by the loss of a water molecule. Such a linkage between two monosaccharide units through oxygen atoms is called glycosidic linkage.

In disaccharides, if the reducing groups of both the monosaccharides i.e., aldehydic or ketonic groups are bonded, then they are not capable to reduce Fehling’s solution and Tollens’ reagent and are said to be non-reducing sugars, e.g., sucrose. On the other hand, such sugars which contain these functional groups in a free state, are capable to reduce Fehling’s solution and Tollen’s reagent, and therefore, they are called reducing sugars. For example, maltose and lactose.

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Important Reference Books

(1) Physics-          (1) Concept of Physics by H.C. Verma

                             (2) Modern’s abc of Objective Physics

(2) Chemistry-     (1) Dr. O.P. Tandon (GRB Publication)

                            (2) Modern’s abc of Objective Chemistry

(3) Biology-         (1) Biology by Trueman 

                            (2) Modern’s abc of Objective Biology

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