Herbal Extraction Method Quiz

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Which extraction method is suitable for heat-stable plant materials?

Soxhlet or microwave-assisted extraction (correct)

Maceration

Ultrasound-assisted extraction

Percolation

Which extraction method is suitable for plant materials that are not heat-stable?

Microwave-assisted extraction

Ultrasound-assisted extraction

Maceration or percolation (correct)

Soxhlet extraction

If the extraction solvent is water, which method is suitable?

Maceration (correct)

Microwave-assisted extraction

Percolation

Soxhlet extraction

Which extraction method is suitable for plant materials requiring long exposure to the menstruum?

Maceration Signup and view all the answers

Which extraction method is suitable for volatile solvents?

Percolation and Soxhlet extraction Signup and view all the answers

What is the purpose of the marc (crude residue) in the maceration process?

It is the remaining solid plant material after the extract is separated. Signup and view all the answers

What is the primary consideration when choosing a solvent for plant extraction?

High capacity for extraction of active compounds Signup and view all the answers

Which solvent type is generally used for extracting polar compounds from plants?

Methanol Signup and view all the answers

Which extraction method utilizes sound waves to enhance the extraction process?

Ultrasound Assisted Extraction (UAE) Signup and view all the answers

Which extraction method involves continuously cycling the solvent through the plant material?

Soxhlet extraction Signup and view all the answers

Which property of a suitable solvent is NOT mentioned in the text?

Ability to react with extracted compounds Signup and view all the answers

Which factor should be considered when choosing an extraction method for heat-sensitive compounds?

Stability of the compound to heat Signup and view all the answers

What is the purpose of digestion in the context of solvent extraction?

To increase the solubility of the active constituent Signup and view all the answers

When using the continuous hot method, which of the following is an example of an extraction method?

Soxhlet extraction Signup and view all the answers

In Soxhlet extraction, what is the purpose of the main chamber of the Soxhlet apparatus?

To allow continuous treatment of the sample with a volatile solvent Signup and view all the answers

Which type of plant materials are suitable for Soxhlet extraction?

Partially soluble in the chosen solvent and with insoluble impurities Signup and view all the answers

What is an advantage of using Soxhlet extraction for solvent extraction?

A large amount of drug can be extracted with less solvent Signup and view all the answers

Why is Soxhlet extraction considered unsuitable for thermolabile plant materials?

It requires high temperatures that can damage thermolabile materials Signup and view all the answers