Chrysanthemum cinerariifolium Dried Flower-Heads Quiz
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Questions and Answers

What is the active constituent responsible for the insecticidal properties of pyrethrum flower?

  • Pyrethrin I and Pyrethrin II (correct)
  • Triterpene alcohol (pyrethrol)
  • Sesquiterpene lactone pyrethrosin
  • Apigenin glycosides

What is the shape of the dried flower-heads of Chrysanthemum cinerariifolium?

  • Spherical
  • Globular to sub-globular (correct)
  • Irregular
  • Bell-shaped

Which active constituent is found in traces in pyrethrum flower?

  • Triterpene alcohol (pyrethrol)
  • Pyrethrin I and Pyrethrin II
  • V. O. (sesquiterpene lactone pyrethrosin) (correct)
  • Flavonoid (apigenin glycosides)

What is the most prominent color of the dried flower-heads of Chrysanthemum cinerariifolium?

<p>Brownish-yellow (C)</p> Signup and view all the answers

What is the odor of the dried flower-heads of Chrysanthemum cinerariifolium?

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

What is the taste of the dried flower-heads of Chrysanthemum cinerariifolium?

<p>Slightly bitter and acrid (B)</p> Signup and view all the answers

What is the family of Chrysanthemum cinerariifolium?

<p>Compositae (Asteraceae) (A)</p> Signup and view all the answers

At what stage is the collection of Chrysanthemum cinerariifolium flower-heads usually done?

<p>When 2/3 of disc florets are open (A)</p> Signup and view all the answers

What is the color of the dried flower-heads of Chrysanthemum cinerariifolium?

<p>Brownish-yellow (D)</p> Signup and view all the answers

Which active constituent is responsible for the insecticidal properties of pyrethrum flower?

<p>Pyrethrin I and Pyrethrin II (C)</p> Signup and view all the answers

What is the test for identity of pyrethrum flower using Williamson’s reagent?

<p>Formation of crimson color (A)</p> Signup and view all the answers

What is the main use of pyrethrum flower?

<p>As a safe insecticide (D)</p> Signup and view all the answers

What is the color of the young flower-buds of Eugenia aromatica before they expand?

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

What is the geographical source of Eugenia aromatica?

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

What is the state of the exhausted clove?

<p>Dark in color and yields no oil (A)</p> Signup and view all the answers

What is the main product formed by removing both corolla and stamens from expanded flowers?

<p>Blown clove dust (D)</p> Signup and view all the answers

What is the common name for the ripe fruits of clove?

<p>Mother clove (D)</p> Signup and view all the answers

What is detected in the presence of clove stalk?

<p>Starch granules and Ca.Ox prisms (A)</p> Signup and view all the answers

What is the main compound found in Gouda active constituents?

<p>Eugenol (A)</p> Signup and view all the answers

What is the percentage range of volatile oil in clove stalk, according to Yaser G. Gouda?

<p>5-7% (B)</p> Signup and view all the answers

Which of the following is NOT a reported use of eugenol?

<p>Preparation of clove oil (C)</p> Signup and view all the answers

What activity has been cited for the sesquiterpene of the Gouda active constituents?

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

What is the percentage range of tannins in Gouda active constituents?

<p>10-13% (A)</p> Signup and view all the answers

Which compound is prepared by steam distillation and has local anesthetic action?

<p>Eugenol (A)</p> Signup and view all the answers

Study Notes

Insecticidal Properties of Pyrethrum

  • The active constituent responsible for insecticidal properties in pyrethrum flowers is pyrethrin.
  • Pyrethrin is effective against a variety of pests, serving as a natural insecticide.

Chrysanthemum cinerariifolium Characteristics

  • The dried flower-heads of Chrysanthemum cinerariifolium are daisy-shaped.
  • Prominently, the color of these dried flower-heads is yellow.
  • They emit a characteristic odor that is sweet and somewhat herbaceous.
  • The taste of the dried flower-heads is known to be slightly bitter.
  • This plant belongs to the Asteraceae family.
  • Collection of flower-heads typically occurs during full bloom.

Testing and Uses of Pyrethrum

  • The identity test for pyrethrum flower can be conducted using Williamson’s reagent.
  • Pyrethrum flower is primarily used as a natural insecticide in agriculture and household pest control.

Eugenia aromatica Details

  • Young flower-buds of Eugenia aromatica are green before they expand.
  • This species is primarily sourced from Indonesia and Madagascar.
  • The exhausted clove refers to the remaining plant material after essential oils have been extracted.
  • The main product formed by removing the corolla and stamens from expanded flowers is clove oil.
  • Ripe fruits of clove are commonly known as clove buds.

Clove Constituents and Uses

  • The presence of clove stalks can be detected due to their distinct aromatic profile.
  • The main compound identified in Gouda active constituents is eugenol.
  • According to Yaser G. Gouda, the volatile oil percentage range in clove stalks is between 10-20%.
  • Eugenol is noted for its numerous applications in dentistry, flavoring, and as a potential therapeutic agent.
  • The sesquiterpene found in Gouda active constituents has been cited for possessing anti-inflammatory properties.
  • Tannins in Gouda active constituents range from 5-15%.
  • Eugenol, prepared by steam distillation, is recognized for its local anesthetic action.

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Description

Test your knowledge on the collection, drying process, and characteristics of Chrysanthemum cinerariifolium dried flower-heads. Learn about its origin, drying methods, and macroscopic and microscopical characteristics.

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