1. Describe galactomannan.

2. Give the idealized repeat unit structure of guaran using both (a) Haworth structures and (b) shorthand notations.

3. Describe the two structural differences between guaran and locust bean gum.

4. (a) Describe the difference in solubility of guaran and locust bean gum. (b) Give a molecular explanation for the differences in solubility of guaran and locust bean gum.

5. Describe the natures of guar and locust bean gums based on their sources and how they are prepared.

6. Compare the synergistic interactions of guar and locust bean gums with xanthan.

7. Give the molecular basis for the synergistic interaction of locust bean gum with xanthan and/or carrageenan.

Web Authors: James R. Daniel, Ph. D. and James N. BeMiller, Ph. D.
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