Pharmacognosy: The Leaf (Folium) Quiz
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Questions and Answers

What is the active constituent responsible for the skin-lightening properties of Uva ursi leaves?

  • Crystalline resinous principle ursone
  • Phenolic glycosides (correct)
  • Tannins
  • Flavonoid
  • What is the origin of Uva ursi leaves?

  • Mentha
  • Archtostaphyllos uva-ursi (correct)
  • Rosemary
  • Hammamilis
  • Which constituent of Uva ursi leaves is known to act as a skin-whitening agent?

  • Crystalline resinous principle ursone
  • Tannins
  • Flavonoid
  • Phenolic glycosides (correct)
  • What is the percentage of tannin present in Uva ursi leaves?

    <p>5%</p> Signup and view all the answers

    What are the uses of Uva ursi leaves?

    <p>Stimulant, diuretic, urinary tract antiseptic</p> Signup and view all the answers

    Study Notes

    Uva Ursi Leaves

    • Arbutin is the active constituent responsible for the skin-lightening properties of Uva ursi leaves.
    • Uva ursi leaves originate from the bearberry plant, which is native to the mountains of Northern Europe, Asia, and America.
    • Arbutin is the constituent of Uva ursi leaves that is known to act as a skin-whitening agent.
    • Uva ursi leaves contain approximately 10-15% tannin.
    • The uses of Uva ursi leaves include:
      • Skin-lightening and skin-whitening
      • Antimicrobial and antiseptic properties
      • Reducing inflammation and soothing skin irritations

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    Description

    Test your knowledge on the pharmacognosy of leaves with this quiz. Learn about the glycosides, tannins, and phenolic glycosides present in various leaves such as Uva ursi, Hammamilis, Mentha, and Rosemary.

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