Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
Please only (10)
![Model 2: Aldoses are reducing sugars.
H.
C
H-C-OH
HO-C-H
H-C-OH
H-C-OH
I
CH₂OH
D-glucose
oxidizing
agent
Critical Thinking Questions :
7. When an aldehyde is oxidized, what functional group is produced?
8. Work with your team to draw the product for the reaction in Model 2 if only the aldehyde
carbon is oxidized.
9. If the aldehyde in a carbohydrate is oxidized, how might this affect its ability to form a
hemiacetal to close into a ring structure? Discuss with your team and write your
consensus answer.
10. Review your answer to CTQ 6 and the structures for maltose and lactose in Figure 2.
Would either of these disaccharides be able to function as a reducing sugar? Does your
team agree?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6ef6c1fa-4f98-449a-979a-2608113b2b91%2F9f9bff0f-5272-428b-b602-ac15e0727fef%2Fgvrnu4m_processed.png&w=3840&q=75)
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