Draw the linear form of fructose as a Fischer projection, and the cyclized form of a-D-fructofuranose as a Fisher Projection and as a Haworth Projection. When drawing the chemical structures, be careful to assign all hydrogen atoms. D-fructose Linear form a-D-fructofuranose Haworth Projection a-D-fructofuranose cyclized Fischer Projection
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.
![## BCH351 Assignment Overview
1. **Fructose Structure Drawing**:
- Draw the linear form of fructose using a Fischer projection.
- Convert to the cyclized form: α-D-fructofuranose.
- Represent this as both a Fischer Projection and a Haworth Projection.
- Ensure to assign all hydrogen atoms correctly.
2. **Questions on D-Glucose**:
- **a)** Identify an epimer of D-Glucose that is a commonly found sugar.
- **b)** Identify a stereoisomer of D-Glucose that is biologically common but not an epimer.
3. **Glucomannan in Plant Cell Walls**:
- **Description**: Fibrous plants contain cellulose and other polysaccharides. Glucomannan is one such compound.
- **Structure Description**:
- The notation “…β-D-Glcp(1→4)-β-D-Manp(1→4)…” describes a typical glucomannan, indicating the pyranose form with "p."
- **Diagram**: Displays a typical glucomannan structure along with connections (1→4) and (1→6).
4. **Monosaccharide Structures**:
- Draw the linear forms of glucose (Glc), galactose (Gal), and mannose (Man).
- If unfamiliar, refer to your lecture notes or a book (Figure 9.7).
5. **Glucomannan Sequence Drawing**:
- Illustrate glucomannan structures based on the given sequence.
- The sequence repeats as indicated by the dots at the beginning and end of the sequence.
This guide is intended for educational purposes to support your understanding of carbohydrate chemistry.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F38b655ef-e8f9-4148-a25b-c5456f3c1070%2F63079140-eb58-41fb-beea-bd3d8e5332c6%2F64gzo4o_processed.jpeg&w=3840&q=75)
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