Pharmacognosy Chapter 1: Introduction
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Questions and Answers

Which of the following is NOT a factor affecting deterioration of crude drugs under physicochemical factors?

  • Moisture
  • Bacteria and Fungi (correct)
  • Temperature
  • Light

What is the primary reason for packing crude drugs?

  • To prevent moisture and light exposure
  • To improve the quality of drugs on storage
  • To stop enzymatic activity and retain natural color
  • To facilitate shipment and protect the drugs (correct)

Which of the following statements about storage of crude drugs is NOT true?

  • Drugs containing fixed oils cannot become rancid during storage (correct)
  • The quality of some drugs improves on storage, such as Frangula and Cascara barks
  • Aromatic drugs containing volatile oils can lose their aroma during storage
  • Drugs may deteriorate if stored under uncontrolled conditions

What is the purpose of rapid drying of crude drugs?

<p>To prevent decomposition and retain natural color (C)</p> Signup and view all the answers

At what temperature range is enzymatic activity immediately stopped during rapid drying of crude drugs?

<p>$55^\circ\text{C} - 70^\circ\text{C}$ (B)</p> Signup and view all the answers

Which of the following drugs may lose their activity during storage?

<p>Digitalis leaves (D)</p> Signup and view all the answers

What is the potential issue with aromatic drugs containing volatile oils during storage?

<p>They may lose their aroma (A)</p> Signup and view all the answers

Which of the following is NOT listed as a biological factor affecting deterioration of crude drugs?

<p>Light (B)</p> Signup and view all the answers

What is the term used in the text to refer to the addition of inferior or foreign substances to crude drugs?

<p>Adulteration (C)</p> Signup and view all the answers

Which of the following is NOT mentioned as a method of drying crude drugs in the text?

<p>Oven drying (B)</p> Signup and view all the answers

Flashcards

Crude drug deterioration (physicochemical)

Deterioration of crude drugs caused by chemical and physical changes.

Crude drug packing purpose

To protect and facilitate shipment of crude drugs.

Storage: Fixed oils and rancidity

Fixed oils in drugs can become rancid during storage, affecting quality.

Rapid drying of crude drugs

A process to quickly remove moisture and prevent decomposition.

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Rapid drying temp

Enzymatic activity stops between $55^\circ ext{C}-70^\circ ext{C}$ during rapid drying.

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Drug activity loss during storage

Some drugs, like digitalis leaves, lose activity over time.

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Loss of aroma (crude drugs)

Aromatic drugs containing volatile oils may lose their aroma in storage.

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Biological factor (crude drug deterioration)

Microorganisms like bacteria and fungi can cause deterioration.

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Adulteration in crude drugs

Adding inferior or foreign substances to crude drugs.

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Methods of crude drug drying (not oven drying)

Drying methods other than oven-drying are used for preparing crude drugs.

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Factor NOT affecting physicochemical deterioration

Bacteria and fungi are biological factors, not physicochemical.

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Light's effect on crude drugs

Light is not listed as a biological factor affecting drug quality.

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Primary reason for packing crude drugs

Facilitate shipment and protect the drugs.

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Crude drug storage

Proper storage conditions affect quality & safety of crude drugs.

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Rapid drying purpose

Prevent decomposition and preserve natural color.

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Digitalis leaves storage

Digitalis leaves can lose activity during storage.

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