20 Questions
What is the color of Chamomile oil?
Violet
Which type of plant organ accumulates Rosewood essential oil?
Woods
What function do essential oils serve in protection against predators?
Insect repellent
Which essential oil is known for its antiseptic properties due to high phenol content?
Thyme oil
What is the primary use of volatile oils in Aromatherapy?
Stimulation of sense of smell
What is the meaning of 'volatile' in the context of volatile oils?
Easily evaporate when exposed to air at ordinary temperature
What is the synonym used for volatile oils to indicate their evaporation property?
Easily evaporate when exposed to air at ordinary temperature
What do essential oils represent in the context of volatile oils?
Represent the essences or odorous principles found in various plant parts
What is the physical property of essential oils?
Easily evaporate when exposed to air at ordinary temperature
What is the synonym for essential oils indicating their evaporation property?
Easily evaporate when exposed to air at ordinary temperature
Volatile oils are generally heavier than water.
False
Fixed oils leave a permanent stain on filter paper.
True
Oil Winter Green is produced by the enzymatic hydrolysis of glycosides.
True
Essential oils can be secreted in glandular trichomes.
True
The biological function of essential oils is well understood and clear.
False
Volatile oils are also known as ethereal oils because they easily evaporate on exposure to air at ordinary temperature.
True
Essential oils represent the essences or odorous principles found in various plant parts.
True
The synonym 'ethereal oils' is used to indicate that volatile oils easily change to a gas.
False
Fixed oils and volatile oils have similar properties and distribution in plants.
False
The primary function of essential oils is to serve as a liquid for therapeutic use.
False
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.
Test your knowledge of the introduction, chemistry, isolation methods, and pharmacological actions of volatile oils in this quiz based on the lecture by Shaza Hussiny Aly, PhD. Explore the chief families containing essential oils in this informative quiz.
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