Question

Aloe contains ______ type of glycosides:

• A. C-glycosides
• B. O-glycosides
• C. S-glycosides
• D. N-glycosides

Answer 1

The Correct Option is A

The question tests the understanding of the type of glycosides found in Aloe. Glycosides are compounds in which a sugar is bound to a non-carbohydrate moiety. These are categorized based on the type of bond linking the sugar to this moiety. Let's analyze each option to determine the correct type found in Aloe:

1. C-glycosides: These are glycosides where the sugar is attached to the aglycone by a carbon-glycosidic bond. In Aloe, compounds such as Aloin contain C-glycosides. Aloin is a notable example of an anthraquinone C-glycoside, a bitter-tasting yellow compound that accounts for Aloe's laxative properties.
2. O-glycosides: In these glycosides, the sugar is linked via an oxygen atom to the aglycone. They are common in nature but not the primary type of glycoside found in Aloe.
3. S-glycosides: These have the sugar attached through a sulfur atom. Such glycosides are not relevant to Aloe as Aloe is known for its anthraquinone and C-glycoside content.
4. N-glycosides: In these, the linkage is through a nitrogen atom. These are generally not associated with Aloe's chemical constituents.

Based on this detailed analysis, the correct answer is that Aloe contains C-glycosides. This is specific to Aloe's chemical makeup, particularly through substances like Aloin.