Glycosides and Glycones

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18 Questions

Which glycoside subgroup contains thiocyanate group?

Thiocyanate glycosides

What is the property of Steroidal glycosides in relation to heart failure?

For heart failure

Which plant is a source of Flavone glycosides?

Orange

What is the result of the test for Anthraquinone glycosides?

PINK / RED in ammonical layer

Which test is used to detect Saponin glycosides?

Drop blood on slide + mixed with few drops of extract

What is the characteristic of Aldehyde glycosides?

Bitter taste

What is a glycoside composed of?

A sugar molecule bonded to a non-sugar group via a glycosidic bond

What is a characteristic of a glycone?

Soluble in water due to the presence of -OH

What type of glycoside is formed when a sugar molecule bonds with a phenol or –OH group of aglycone?

O-glycoside

What is a characteristic of a cardiac glycoside?

Has a steroid-like structure

What type of glycoside is formed when a sugar molecule bonds with the –NH group of aglycone?

N-glycoside

What is a characteristic of saponin glycosides?

Foams when shaken in water

What is the result of mixing a flavonoid glycoside extract with zinc dust and hydrochloric acid?

A flavonoid glycoside is formed

What is the purpose of adding sodium picrate solution and sodium carbonate solution to the neck of a flask using a cork?

To trap sulphuric acid

What is the result of adding a few drops of ferric chloride solution to a thiocyanate glycoside extract?

A yellow color is formed

What is the purpose of adding acetic anhydride and concentrated sulfuric acid to a steroidal glycoside extract?

To detect the presence of steroidal glycosides

What is the result of adding chloroform and concentrated sulfuric acid to a steroidal glycoside extract?

A yellow ring is formed at the junction of two liquids

What is the result of adding Tollens' reagent to an aldehyde glycoside extract?

A silver mirror is formed

Learn about glycosides, which are molecules containing a sugar bonded to a non-sugar group, and glycones, the sweet-tasting sugar molecules. This quiz covers the characteristics and properties of these molecules.

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