What are the characteristics of volatile oil?

Volatile or essential oils, as their name implies, are volatile in steam. They differ entirely in both chemical and physical properties from fixed oils. substances such as gums and resins and themselves tend to resinify on exposure to air. Several points of differentiation exist between volatile oils and fixed oils.

What are examples of volatile oil?

Volatile oils (VO) are extracted from plants to produce essential oils, and are some of the most important medicinally active plant constituents.

Some other herbal examples include:
  • Melissa off. (Lemon balm)
  • Zingiber off. (Ginger)
  • Humulus lupulus (Hops)
  • Mentha piperite (Peppermint)
  • Allium sativum (Garlic)

What is volatile oil in pharmacognosy?

Volatile oils are odorous volatile principles of plant and animal source, evaporate when exposed to air at ordinary temperature, and hence known as volatile or etheral oils. These represent essence of active constituents of the plant and hence also known as essential oils. Drugs Containing Volatile Oils.

What is the meaning of volatile oil?

: an oil that vaporizes readily especially : essential oil.

What are volatile oils used for?

They are used in perfumes, cosmetics, soaps, air fresheners and other products, for flavoring food and drink, and for adding scents to incense and household cleaning products. Essential oils are often used for aromatherapy, a form of alternative medicine in which healing effects are ascribed to aromatic compounds.

What is the composition of volatile oil?

It consists of terpene hydrocarbons (78%) and oxygenated terpenoids (9%). alpha-Bergamotene (27.38%) and alpha-copaene (23.05%) are found to be the major compounds. A comparison of the chemical composition of the oil was made with that of flowers and fruits.

Is olive oil volatile?

The unique and delicate flavour of olive oil is attributed to the volatile compounds that develop during and after oil extraction from the olive fruit.

What is example of fixed oil?

Fixed oils are obtained from the oil yield seeds. Fixed or vegetable oils are esters of fatty acids, dense and non-volatile. Example of vegetable oils is olive oil, almond oil, coconut oil, sunflower oil.

What is essential oil examples?

Most common essential oils such as lavender, peppermint, tea tree oil, patchouli, and eucalyptus are distilled. Raw plant material, consisting of the flowers, leaves, wood, bark, roots, seeds, or peel, is put into an alembic (distillation apparatus) over water.

What are volatile liquids?

A liquid that evaporates readily at normal temperature is known as a volatile liquid. Volatile liquids are liquids that transform easily into the vapor phase. Usually, the vapor pressure of volatile liquids is very high.

What is the difference between volatile oil and fixed oil?

Fixed oils consist of glyceryl esters of fatty acids, while volatile oils consist of terpenes. 5. Fixed oils can leave permanent grease spots on a filter paper, while volatile oils cannot.

Why fatty oils are called fixed oils?

They float in water since their specific gravity is less than one. They produce a permanent translucent stain on the paper and are called fixed oils. Fixed oils and fats cannot be distilled without their decomposition.

How are volatile oils prepared?

To extract volatile oil, the leaves of T. africanum were separated carefully and then washed twice with distilled water. The washed leaves were dried for 10-14 days in the shade at room temperature to avoid damage and to minimize cross contamination of the separated leaves.

What are the four official fixed oils?

Some common fixed oils include Coconut, Olive, Argan and Jojoba.

What is fixed oil definition?

fixed oil in British English

noun. a natural animal or vegetable oil that is not volatile: a mixture of esters of fatty acids, usually triglycerides. Also called: fatty oil. Compare essential oil.

What is isolation of volatile oil?

The volatile oils from fresh materials are separated by hydrodistillation, and volatile oils from air dried parts are separated by steam distillation.

What are the uses of volatile oils in the pharmaceutical industry?

To these components belong all properties that make essential oils so interesting for pharmaceutical uses; the most investigated ones are antioxidant, anti-inflammatory, antimicrobial, wound-healing, and anxiolytic activities.

How is volatile oil content calculated?

Subtract the volume of xylene previously observed from the volume of oily layer, the difference in volume is taken to be the content of volatile oil, calculate the percentage of volatile oil in CMM sample.

What is used to extract oil?

Popular extraction methods include: Steam Distillation, Solvent Extraction, CO2 Extraction, Maceration, Enfleurage, Cold Press Extraction, and Water Distillation. The method of extraction affects essential oil quality by way of pressure and temperatures applied.

Which is most widely used for extraction of volatile oils?


Distillation converts the volatile liquid (the essential oils) into a vapor and then condenses the vapor back into a liquid. It is the most popular, and cost effective method in use today in producing essential oils.

How do you separate volatile oil from water?

Steam distillation methods commonly use trap solution, thus the essential oil need evaporate to remove the trap solution. If there is large amount of ingredients and lots of yield of essential oil, the you can separate the oil from water using separatory funnel and dehydrate using sodium sulphate and glass filters.

What 3 ways oil can be extracted?

Oil is extracted by three general methods: rendering, used with animal products and oleaginous fruits; mechanical pressing, for oil-bearing seeds and nuts; and extracting with volatile solvents, employed in large-scale operations for a more complete extraction than is possible with pressing.