Podcast
Questions and Answers
What type of polysaccharide yields only one kind of monosaccharide upon hydrolysis?
What type of polysaccharide yields only one kind of monosaccharide upon hydrolysis?
Which of the following statements about inulin is correct?
Which of the following statements about inulin is correct?
Which component of starch consists of repeating chains of glucose linked by both 1C-4C and 1C-6C linkages?
Which component of starch consists of repeating chains of glucose linked by both 1C-4C and 1C-6C linkages?
What is formed from the enzymatic hydrolysis of starch?
What is formed from the enzymatic hydrolysis of starch?
Signup and view all the answers
What is the primary storage form of polysaccharide found in animals?
What is the primary storage form of polysaccharide found in animals?
Signup and view all the answers
During starch hydrolysis, what is produced through acid hydrolysis?
During starch hydrolysis, what is produced through acid hydrolysis?
Signup and view all the answers
Which of the following is NOT a characteristic of amylose?
Which of the following is NOT a characteristic of amylose?
Signup and view all the answers
How does the solubility of inulin compare to that of starch in alcohol?
How does the solubility of inulin compare to that of starch in alcohol?
Signup and view all the answers
Study Notes
Polysaccharides
- Polysaccharides are complex carbohydrates composed of many monosaccharide units linked together.
- They are classified as homopolysaccharides or heteropolysaccharides.
- Homopolysaccharides yield only one type of monosaccharide upon hydrolysis.
- Heteropolysaccharides yield a mixture of monosaccharides and derived products.
Homopolysaccharides
- Starch is a homopolysaccharide comprised of glucose molecules.
- There are two types of starch: amylose and amylopectin.
- Amylose consists of long, unbranched chains of glucose molecules linked by α-1,4-glycosidic bonds.
- Amylopectin is branched, containing α-1,4-glycosidic bonds in the main chain and α-1,6-glycosidic bonds at the branching points.
Stages in Starch Hydrolysis
- Starch hydrolysis is the breakdown of starch into simpler sugars by enzymes or acids.
- Enzymatic hydrolysis (amylase) yields maltose.
- Acid hydrolysis yields glucose.
Inulin
- Inulin is a fructan, a type of homopolysaccharide consisting of fructose units linked by β-2,1-glycosidic bonds.
- It is found in the bulbs of onions and garlic.
- Inulin is a white, odorless, and tasteless powder that is soluble in hot water, slightly soluble in cold water, and insoluble in 60% alcohol.
- It is optically active, meaning it rotates polarized light.
Glycogen
- Glycogen is the primary storage form of carbohydrate in animals.
- It is found in the liver (for storage) and in muscles (as a source of energy).
- Glycogen consists of glucose molecules linked by α-1,4-glycosidic bonds in the main chain and α-1,6-glycosidic bonds at the branching points, similar to amylopectin.
Experiment Results
-
Solubility Test:
- Inulin is soluble in hot water but only slightly soluble in cold water.
-
Iodine Test:
- The iodine test can differentiate between amylose and amylopectin.
- Amylose gives a dark blue-black color with iodine, while amylopectin produces a reddish-purple color.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Test your knowledge on polysaccharides, their classifications, and key components like starch and inulin. The quiz covers the differences between homopolysaccharides and heteropolysaccharides, as well as the stages in starch hydrolysis. Challenge yourself to recall essential concepts relating to complex carbohydrates!
