Concept explainers
During the digestion of starch from potatoes, the enzyme α-amylase catalyzes the hydrolysis of starch into maltose. Subsequently, the enzyme maltase catalyzes the hydrolysis of maltose into two glucose units. Write an equation (in words) for the enzymatic conversion of starch to glucose. Classify each of the carbohydrates in the equation as a disaccharide, monosaccharide, or polysaccharide.
Interpretation:
An equation for the enzymatic conversion of starch to glucose has to be written in words and each of the carbohydrate in the equation has to be classified as disaccharides, monosaccharides or polysaccharides.
Concept introduction:
Polysaccharides are chains of monosaccharides.
Disaccharide composed of two monosaccharides.
Glucose, maltose and starch are monosaccharides, disaccharides and polysaccharides respectively.
Answer to Problem 20.20UKC
The equation for the enzymatic conversion of starch to glucose is,
Glucose is a monosaccharide, maltose is a disaccharide and starch is a polysaccharide.
Explanation of Solution
The carbohydrates in the potatoes are in starch form, starch is polysaccharide so it hydrolyzed to its simple forms by enzyme catalysis.
The enzymatic conversion of starch into maltose then into glucose is done by enzyme
Hence,
The equation for the enzymatic conversion of starch to glucose is,
Here the glucose is a monosaccharide, maltose is a disaccharide and starch is a polysaccharide.
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Chapter 20 Solutions
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
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