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Medicinal Plants PG 101 Lecture 7 Quiz

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Questions and Answers

Which of the following is NOT a natural product obtained from a natural source?

Etoposide (correct)
Morphine
Senna
Cinchona

In which industry are natural products used as suspending and emulsifying agents, suppository bases, and binders?

Cosmetics industry
Pharmaceutical industry (correct)
Microbiology laboratories
Food industry

What is the first operation that must be performed after drying the plant material?

Collection
Preservation
Grinding (correct)
Extraction

For scientific research purposes, what must be carefully done to the intending plant?

Identified (C) Signup and view all the answers

Which of the following is used as a dusting powder, indicator, and in perfumery in various industries?

Cinchona (D) Signup and view all the answers

What is the purpose of powdering the plant material in the extraction process?

To reduce the extraction time by increasing the surface area (A) Signup and view all the answers

Which type of extract is obtained by evaporation of the solvent used for its production?

Dry extracts (A) Signup and view all the answers

What is the ideal characteristic of a solvent for extracting pharmacologically active constituents?

Highly selective for the compound to be extracted (C) Signup and view all the answers

What is the purpose of using ethanol mixed with water as a solvent in extraction?

To increase the porosity of the cell walls in plant material (B) Signup and view all the answers

What is the main effect of large differences in particle size on the extraction process?

Slow down the extraction process due to decreased surface area (D) Signup and view all the answers

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