Saponin Glycosides in Plants Quiz

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What is the distinct property of saponin glycosides in water?

They form soapy lather (correct)

They become sticky

They form a gel

They remain unchanged

What are the aglycones of saponin glycosides referred to as?

Sapogenins (correct)

Saponins

Steroids

Glycosides

What is the general taste of saponins?

Salty and pungent

Bitter and acrid (correct)

Sour and tangy

Sweet and savory

How do saponins modify the surface tension of water?

Lower the surface tension Signup and view all the answers

What effect do saponins have on red blood cells when injected into the bloodstream?

Cause hemolysis Signup and view all the answers

In medicine, what have saponins been used for?

Foaming agents Signup and view all the answers

Which type of saponins is less widely distributed in nature?

Steroidal saponins Signup and view all the answers

What is the main sweet principle of liquorice?

Glycyrrhizin Signup and view all the answers

Which type of saponins have a glycosidic linkage at position 3?

Pentacyclic triterpenoid saponins Signup and view all the answers

Which food materials contain a significant amount of saponins?

Beans, lentils, soybeans, spinach, and oats Signup and view all the answers

What is the structure of neutral saponins based on?

Steroidal triterpenoid Signup and view all the answers

Which type of saponins are soluble in alcohol and water but insoluble in non-polar organic solvents?

Acid saponins Signup and view all the answers

What is the medicinal importance of steroidal saponins?

They are suitable precursors in the partial synthesis of sex hormones Signup and view all the answers

Which specialized structure is responsible for the occurrence of volatile oils in the Pinaceae and Rutaceae plant families?

Oil-tubes (vittae) Signup and view all the answers

In which plant part do volatile oils appear in appreciable quantities in the rose?

Petals Signup and view all the answers

Where do volatile oils appear in appreciable quantities in cinnamon?

Bark Signup and view all the answers

Which part of the umbelliferous fruits do volatile oils appear in?

Pericarp Signup and view all the answers

Where do volatile oils appear in appreciable quantities in the mint plant?

Glandular hairs of the stems and leaves Signup and view all the answers

In which part of the orange tree do two different kinds of volatile oils occur?

Flower petals and rind Signup and view all the answers

Which method of distillation is employed for fresh plant material to obtain volatile oils?

Steam distillation Signup and view all the answers

What is the biosynthetic origin of aromatic compounds found in volatile oils?

Shikimic acid-phenyl propanoid route Signup and view all the answers

Which property of volatile oils is often a valuable diagnostic property?

Optical rotation Signup and view all the answers

Which chemical property is used to determine the alcohol content in volatile oils?

Determination of alcohol Signup and view all the answers

What is a common use of volatile oils?

Prophylactic against insects Signup and view all the answers

What happens to volatile oils on exposure to light and air?

They become rancid Signup and view all the answers

What is the main method for obtaining volatile oils from plant parts containing the oil?