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Questions and Answers
What is the active constituent responsible for the insecticidal properties of pyrethrum flower?
What is the shape of the dried flower-heads of Chrysanthemum cinerariifolium?
Which active constituent is found in traces in pyrethrum flower?
What is the most prominent color of the dried flower-heads of Chrysanthemum cinerariifolium?
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What is the odor of the dried flower-heads of Chrysanthemum cinerariifolium?
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What is the taste of the dried flower-heads of Chrysanthemum cinerariifolium?
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What is the family of Chrysanthemum cinerariifolium?
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At what stage is the collection of Chrysanthemum cinerariifolium flower-heads usually done?
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What is the color of the dried flower-heads of Chrysanthemum cinerariifolium?
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Which active constituent is responsible for the insecticidal properties of pyrethrum flower?
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What is the test for identity of pyrethrum flower using Williamson’s reagent?
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What is the main use of pyrethrum flower?
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What is the color of the young flower-buds of Eugenia aromatica before they expand?
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What is the geographical source of Eugenia aromatica?
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What is the state of the exhausted clove?
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What is the main product formed by removing both corolla and stamens from expanded flowers?
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What is the common name for the ripe fruits of clove?
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What is detected in the presence of clove stalk?
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What is the main compound found in Gouda active constituents?
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What is the percentage range of volatile oil in clove stalk, according to Yaser G. Gouda?
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Which of the following is NOT a reported use of eugenol?
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What activity has been cited for the sesquiterpene of the Gouda active constituents?
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What is the percentage range of tannins in Gouda active constituents?
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Which compound is prepared by steam distillation and has local anesthetic action?
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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.
