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What is the active constituent responsible for the insecticidal properties of pyrethrum flower?
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?
What is the shape of the dried flower-heads of Chrysanthemum cinerariifolium?
Which active constituent is found in traces in pyrethrum flower?
Which active constituent is found in traces in pyrethrum flower?
What is the most prominent color of the dried flower-heads of Chrysanthemum cinerariifolium?
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?
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?
What is the taste of the dried flower-heads of Chrysanthemum cinerariifolium?
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What is the family of Chrysanthemum cinerariifolium?
What is the family of Chrysanthemum cinerariifolium?
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At what stage is the collection of Chrysanthemum cinerariifolium flower-heads usually done?
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?
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?
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?
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?
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?
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?
What is the geographical source of Eugenia aromatica?
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What is the state of the exhausted clove?
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?
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?
What is the common name for the ripe fruits of clove?
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What is detected in the presence of clove stalk?
What is detected in the presence of clove stalk?
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What is the main compound found in Gouda active constituents?
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?
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?
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?
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?
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?
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.
