Volatile Oils Phytochemistry Lecture 1 Quiz

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Questions and Answers

What is the color of Chamomile oil?

  • Violet (correct)
  • Green
  • Colorless
  • Yellow

Which type of plant organ accumulates Rosewood essential oil?

  • Woods (correct)
  • Barks
  • Leaves
  • Flowers

What function do essential oils serve in protection against predators?

  • Fungi growth inhibitor
  • Antibacterial agent
  • Insect repellent (correct)
  • Antioxidant

Which essential oil is known for its antiseptic properties due to high phenol content?

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

What is the primary use of volatile oils in Aromatherapy?

<p>Stimulation of sense of smell (B)</p> Signup and view all the answers

What is the meaning of 'volatile' in the context of volatile oils?

<p>Easily evaporate when exposed to air at ordinary temperature (C)</p> Signup and view all the answers

What is the synonym used for volatile oils to indicate their evaporation property?

<p>Easily evaporate when exposed to air at ordinary temperature (A)</p> Signup and view all the answers

What do essential oils represent in the context of volatile oils?

<p>Represent the essences or odorous principles found in various plant parts (C)</p> Signup and view all the answers

What is the physical property of essential oils?

<p>Easily evaporate when exposed to air at ordinary temperature (A)</p> Signup and view all the answers

What is the synonym for essential oils indicating their evaporation property?

<p>Easily evaporate when exposed to air at ordinary temperature (B)</p> Signup and view all the answers

Volatile oils are generally heavier than water.

<p>False (B)</p> Signup and view all the answers

Fixed oils leave a permanent stain on filter paper.

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

Oil Winter Green is produced by the enzymatic hydrolysis of glycosides.

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

Essential oils can be secreted in glandular trichomes.

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

The biological function of essential oils is well understood and clear.

<p>False (B)</p> Signup and view all the answers

Volatile oils are also known as ethereal oils because they easily evaporate on exposure to air at ordinary temperature.

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

Essential oils represent the essences or odorous principles found in various plant parts.

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

The synonym 'ethereal oils' is used to indicate that volatile oils easily change to a gas.

<p>False (B)</p> Signup and view all the answers

Fixed oils and volatile oils have similar properties and distribution in plants.

<p>False (B)</p> Signup and view all the answers

The primary function of essential oils is to serve as a liquid for therapeutic use.

<p>False (B)</p> Signup and view all the answers

Flashcards

Color of Chamomile oil

Violet

Rosewood oil accumulation location

Plant's wood

Essential oil predator defense function

Insect repellent

Antiseptic Thyme oil component

High phenol content

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Aromatherapy's volatile oil use

Stimulates sense of smell

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Meaning of 'volatile' in volatile oils

Evaporates easily at room temperature

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Synonym for volatile oil's evaporation

Easily evaporates

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Essential oils in volatile oils context

The fragrant essence of plant parts

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Physical property of essential oils

Easily evaporates at room temperature

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Synonym for essential oils evaporation

Easily evaporates

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Volatile oils density

Generally lighter than water

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Fixed oils effect on filter paper

Leave a permanent stain

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Oil of Wintergreen production

Enzymatic hydrolysis of glycosides

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Essential oil secretion location

Glandular trichomes

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Understanding of essential oil biological function

Not fully understood or clear

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Alternative name for volatile oils

Ethereal oils

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Definition of essential oils

Essence or fragrant principle of plant parts

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'Ethereal' oil synonym meaning

Easily changing to a gas

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Comparison of fixed and volatile oils in plants

Different properties and distribution

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Primary function of essential oils

Not solely for therapeutic use

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Study Notes

Characteristics of Volatile Oils

  • Volatile oils are also known as ethereal oils because they easily evaporate on exposure to air at ordinary temperature.
  • The synonym 'ethereal oils' is used to indicate that volatile oils easily change to a gas.
  • Volatile oils are lighter than water.

Properties of Essential Oils

  • Essential oils represent the essences or odorous principles found in various plant parts.
  • Essential oils have a low boiling point and evaporate quickly.
  • Essential oils are lighter than water.

Biological Function of Essential Oils

  • The biological function of essential oils is not well understood and is still unclear.
  • Essential oils serve in protection against predators.

Production of Essential Oils

  • Oil Winter Green is produced by the enzymatic hydrolysis of glycosides.

Secretion of Essential Oils

  • Essential oils can be secreted in glandular trichomes.

Fixed Oils

  • Fixed oils leave a permanent stain on filter paper.

Use of Essential Oils

  • The primary use of volatile oils in Aromatherapy is therapeutic.
  • The primary function of essential oils is not to serve as a liquid for therapeutic use.

Other Facts

  • Chamomile oil has a distinct color.
  • Rosewood essential oil accumulates in a specific plant organ.
  • One type of essential oil is known for its antiseptic properties due to high phenol content.

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