Maltose A disaccharide consisting of two

Saliva begins the process of chemical digestion with salivary amylase. This enzyme splits starch molecules into fragments. Specifically, polysaccharides, or starches, are broken down into maltose, a disaccharide consisting of two glucose molecules. Salivary amylase may account for up to 75% of starch digestion before it is denatured by gastric acid in the stomach. 

The oligosaccharides commonly encountered in nature belong to disaccharides. The physiologically important disaccharides are maltose, lactose, trehalose and sucrose. Disaccharides consist of two monosaccharides joined covalently by an O-glycosidic bond. The hydroxyl group formed as a result of hemiacetal formation is highly reactive when compared to other hydroxyl groups. This... 

Disaccharide A sugar consisting of two monosaccharides linked by a glycoside bond. The common dietary disaccharides are sucrose (cane or beet sugar), lactose, maltose and isomaltose. 

The glycosidic bond to an anomeric carbon can be either a or (3. Maltose, the disaccharide obtained by enzyme-catalyzed hydrolysis of starch, consists of two cv-D-glucopyranose units joined by a 1->4-o-glycoside bond. Cellobiose, the disaccharide obtained by partial hydrolysis of cellulose, consists of two /3-o-glucopyranose units joined by a 1—>4-/3-glycoside bond. 

Starch is the food reserve of plants. It consists of two components amylose and amylopectin. Amylose consists of several thousand glucose units linked by a-glycosidic bonds between carbons 1 and 4 to form a linear polymer. Incomplete hydrolysis of amylose produces the disaccharide maltose, which also has an a-glycosidic bond. Although amylose differs from cellulose only in the stereochemistry of the glycosidic bonds between its glucose monomers, it has a very different shape and quite different physical. 

Maltose is a disaccharide isolated from amylose that consists of two glucose units linked a(l — 4). Draw the structure of this molecule. 

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