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Chapter 13: Q. 13.32 (page 450)

What are the kind and number of atoms in the ring portion of the Haworth structure of fructose?

Short Answer

Expert verified

In the cyclic shape of fructose, there are 4carbon atoms and an oxygen atom

Step by step solution

01

Introduction

  • Typically, Haworth projections are used to demonstrate cyclic sugars.
  • It's crucial to have a smooth technique to attract sugar molecules at the same time as preserving the orientation of the OHattachments as a way to discriminate among one-of-a-kind styles of sugars.
02

Howarth structure of fructose

  • The keto organization is positioned at C-2, and the carbon atoms are organized in a direct chain.
  • For the 2anomeric sorts of D-fructose, Haworth designed furanose ring systems.
  • Furan is a heterocyclic ring with 5 contributors and one oxygen atom.
  • The cyclic systems of D-fructose recognized as D-fructofuranose and D-fructofuranose are primarily based totally on this.
03

Explanation

There are 4carbon atoms and one oxygen atom withinside the cyclic shape of fructose.

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Most popular questions from this chapter

Identify each of the following as D or L:

For breakfast, Kate had 1 cup of orange juice (23g carbohydrate), 2 slices of wheat toast ( 24g carbohydrate), 2 tablespoons of grape jam ( 26g carbohydrate), and coffee with sugar substitute ( 0g carbohydrate).

a. Has Kate remained within the limit of 45 to 60g of carbohydrate?

b. Using the energy value of 4kcal/g for carbohydrate, calculate the total kilocalories from carbohydrates in Kate's breakfast, rounded to the tens place.

Draw the Fischer projections for D-glucose and L-glucose.

What is the difference between an aldose and a ketose?

Raffinose, found in Australian manna and in cottonseed meal, has the following Haworth structure:

(13.4,13.5,13.6)

a. Is raffinose a mono-, di-, or trisaccharide?

b. What monosaccharides are present in raffinose?

c. Is raffinose a reducing sugar?
See all solutions

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