24 Questions
What is the active constituent responsible for the insecticidal properties of pyrethrum flower?
Pyrethrin I and Pyrethrin II
What is the shape of the dried flower-heads of Chrysanthemum cinerariifolium?
Globular to sub-globular
Which active constituent is found in traces in pyrethrum flower?
V. O. (sesquiterpene lactone pyrethrosin)
What is the most prominent color of the dried flower-heads of Chrysanthemum cinerariifolium?
Brownish-yellow
What is the odor of the dried flower-heads of Chrysanthemum cinerariifolium?
Faint aromatic
What is the taste of the dried flower-heads of Chrysanthemum cinerariifolium?
Slightly bitter and acrid
What is the family of Chrysanthemum cinerariifolium?
Compositae (Asteraceae)
At what stage is the collection of Chrysanthemum cinerariifolium flower-heads usually done?
When 2/3 of disc florets are open
What is the color of the dried flower-heads of Chrysanthemum cinerariifolium?
Brownish-yellow
Which active constituent is responsible for the insecticidal properties of pyrethrum flower?
Pyrethrin I and Pyrethrin II
What is the test for identity of pyrethrum flower using Williamson’s reagent?
Formation of crimson color
What is the main use of pyrethrum flower?
As a safe insecticide
What is the color of the young flower-buds of Eugenia aromatica before they expand?
Crimson
What is the geographical source of Eugenia aromatica?
Indonesia
What is the state of the exhausted clove?
Dark in color and yields no oil
What is the main product formed by removing both corolla and stamens from expanded flowers?
Blown clove dust
What is the common name for the ripe fruits of clove?
Mother clove
What is detected in the presence of clove stalk?
Starch granules and Ca.Ox prisms
What is the main compound found in Gouda active constituents?
Eugenol
What is the percentage range of volatile oil in clove stalk, according to Yaser G. Gouda?
5-7%
Which of the following is NOT a reported use of eugenol?
Preparation of clove oil
What activity has been cited for the sesquiterpene of the Gouda active constituents?
Anticarcinogenic
What is the percentage range of tannins in Gouda active constituents?
10-13%
Which compound is prepared by steam distillation and has local anesthetic action?
Eugenol
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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