List of essential oils
Encyclopedia
Essential oil
Essential oil
An essential oil is a concentrated hydrophobic liquid containing volatile aroma compounds from plants. Essential oils are also known as volatile oils, ethereal oils or aetherolea, or simply as the "oil of" the plant from which they were extracted, such as oil of clove...

s are volatile
Volatility (chemistry)
In chemistry and physics, volatility is the tendency of a substance to vaporize. Volatility is directly related to a substance's vapor pressure. At a given temperature, a substance with higher vapor pressure vaporizes more readily than a substance with a lower vapor pressure.The term is primarily...

  and liquid aroma compound
Aroma compound
An aroma compound, also known as odorant, aroma, fragrance or flavor, is a chemical compound that has a smell or odor...

s from natural sources, usually plants. Essential oils are not oil
Oil
An oil is any substance that is liquid at ambient temperatures and does not mix with water but may mix with other oils and organic solvents. This general definition includes vegetable oils, volatile essential oils, petrochemical oils, and synthetic oils....

s in a strict sense, but often share with oils a poor solubility
Solubility
Solubility is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent to form a homogeneous solution of the solute in the solvent. The solubility of a substance fundamentally depends on the used solvent as well as on...

 in water. Essential oils often have an odor
Odor
An odor or odour is caused by one or more volatilized chemical compounds, generally at a very low concentration, that humans or other animals perceive by the sense of olfaction. Odors are also commonly called scents, which can refer to both pleasant and unpleasant odors...

 and are therefore used in food flavoring and perfumery. Essential oils are usually prepared by fragrance extraction techniques such as distillation
Distillation
Distillation is a method of separating mixtures based on differences in volatilities of components in a boiling liquid mixture. Distillation is a unit operation, or a physical separation process, and not a chemical reaction....

 (including steam distillation
Steam distillation
Steam distillation is a special type of distillation for temperature sensitive materials like natural aromatic compounds....

), cold pressing, or extraction (maceration
Maceration
Maceration may refer to:* Maceration , in food preparation* Maceration , a step in wine-making** Carbonic maceration, a wine-making technique* Maceration , in sewage treatment* Maceration , a method of preparing bones...

). Essential oils are distinguished from aroma oils (essential oils and aroma compounds in an oily solvent
Solvent
A solvent is a liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute, resulting in a solution that is soluble in a certain volume of solvent at a specified temperature...

), infusion
Infusion
An infusion is the outcome of steeping plants with desired chemical compounds or flavors in water or oil.-History:The first recorded use of essential oils was in the 10th or 11th century by the Persian polymath Avicenna, possibly in The Canon of Medicine.-Preparation techniques:An infusion is very...

s in a vegetable oil, absolutes, and concretes. Typically, essential oils are highly complex mixtures of often hundreds of individual aroma compounds.
  • Agar oil or oodh, distilled from Agarwood
    Agarwood
    Agarwood or oodh is a dark resinous heartwood that forms in Aquilaria and Gyrinops trees when they become infected with a type of mold...

     (Aquilaria
    Aquilaria
    Aquilaria is a genus of fifteen species of trees in the Thymelaeaceae, native to southeast Asia. They occur particularly in the rain forests of Indonesia, Thailand, Cambodia, Laos, Vietnam, Malaysia, Northern India, the Philippines, Borneo and New Guinea. The trees grow to 6-20 m tall...

     malaccensis). Highly prized for its fragrance.
  • Ajwain
    Ajwain
    Trachyspermum ammi, commonly known as ajowan, bishop's weed, ajwain, ajowan caraway, carom seeds, or thymol seeds, is a plant of India and the Near East whose seeds are used as a spice.-Characteristics:...

     oil, distilled from the leaves of Bishop’s weed
    Ajwain
    Trachyspermum ammi, commonly known as ajowan, bishop's weed, ajwain, ajowan caraway, carom seeds, or thymol seeds, is a plant of India and the Near East whose seeds are used as a spice.-Characteristics:...

     (Carum copticum). Oil contains 35-65% thymol
    Thymol
    Thymol is a natural monoterpene phenol derivative of cymene, C10H14O, isomeric with carvacrol, found in oil of thyme, and extracted from Thymus vulgaris and various other kinds of plants as a white crystalline substance of a pleasant aromatic odor and strong antiseptic properties...

    .
  • Angelica
    Angelica
    Angelica is a genus of about 60 species of tall biennial and perennial herbs in the family Apiaceae, native to temperate and subarctic regions of the Northern Hemisphere, reaching as far North as Iceland and Lapland...

     root oil, distilled from the Angelica archangelica.
  • Anise oil, from the Pimpinella anisum, rich odor of licorice, used medicinally.
  • Asafoetida
    Asafoetida
    Asafoetida , alternative spelling asafetida, is the dried latex exuded from the living underground rhizome or tap root of several species of Ferula, which is a perennial herb...

    , used medicinally and to flavor food.
  • Balsam
    Balsam
    Balsam is a term used for various pleasantly scented plant products, and the plants which produce them. Balsams are oily or gummy oleoresins, usually containing benzoic acid or cinnamic acid, obtained from the exudates of various trees and shrubs and used as a base for some botanical medicines...

     oil
    Balsam oil
    Balsam oil, also called oil of Peru or Balsam Peru oil, is an essential oil of Myroxylon pereirae. Balsam oil was used in ancient Egypt to mummify the dead....

    , from the Myroxylon pereirae.
  • Basil
    Basil
    Basil, or Sweet Basil, is a common name for the culinary herb Ocimum basilicum , of the family Lamiaceae , sometimes known as Saint Joseph's Wort in some English-speaking countries....

     oil is used in making perfumes, as well as in aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

  • Bay oil is used in perfumery; Aromatherapeutic for sprains, colds, flu, insomnia, rheumatism.
  • Bergamot
    Bergamot orange
    Citrus bergamia, the Bergamot orange, is a fragrant fruit the size of an orange, with a yellow colour similar to a lemon. Genetic research into the ancestral origins of extant citrus cultivars recently matched the bergamot as a likely hybrid of Citrus limetta and Citrus aurantium...

     oil, used in aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

     and in perfume
    Perfume
    Perfume is a mixture of fragrant essential oils and/or aroma compounds, fixatives, and solvents used to give the human body, animals, objects, and living spaces "a pleasant scent"...

    s.
  • Black Pepper
    Black pepper
    Black pepper is a flowering vine in the family Piperaceae, cultivated for its fruit, which is usually dried and used as a spice and seasoning. The fruit, known as a peppercorn when dried, is approximately in diameter, dark red when fully mature, and, like all drupes, contains a single seed...

     essential oil is distilled from the berries of Piper nigrum. The warm, soothing effect makes it ideal for treating muscle aches, pains and strains.
  • Buchu oil, made from the buchu shrub. Considered toxic and no longer widely used. Formerly used medicinally.
  • Birch is aromatheapeutic for gout, Rheumatism, Eczema, Ulcers.
  • Camphor
    Camphor
    Camphor is a waxy, white or transparent solid with a strong, aromatic odor. It is a terpenoid with the chemical formula C10H16O. It is found in wood of the camphor laurel , a large evergreen tree found in Asia and also of Dryobalanops aromatica, a giant of the Bornean forests...

     is used for cold, cough, fever, rheumatism, and arthritis
  • Cannabis flower essential oil
    Cannabis flower essential oil
    Cannabis flower essential oil, also known as hemp essential oil, is obtained by steam distillation from the flowers and upper leaves of the Cannabis plant...

    , used as a flavoring in foods, primarily candy and beverages. Also used as a scent in perfumes, cosmetics, soaps, and candles.
  • Caraway
    Caraway
    Caraway also known as meridian fennel, or Persian cumin is a biennial plant in the family Apiaceae, native to western Asia, Europe and Northern Africa....

     oil, used a flavoring in foods. Also used in mouthwashes, toothpastes, etc. as a flavoring agent.
  • Cardamom
    Cardamom
    Cardamom refers to several plants of the genera Elettaria and Amomum in the ginger family Zingiberaceae. Both genera are native to India and Bhutan; they are recognised by their small seed pod, triangular in cross-section and spindle-shaped, with a thin papery outer shell and small black seeds...

     seed oil, used in aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

     and other medicinal applications. Extracted from seeds of subspecies of Zingiberaceae
    Zingiberaceae
    Zingiberaceae, or the Ginger family, is a family of flowering plants consisting of aromatic perennial herbs with creeping horizontal or tuberous rhizomes, comprising ca. 52 genera and more than 1300 species, distributed throughout tropical Africa, Asia, and the Americas.Many species are important...

     (ginger). Also used as a fragrance in soaps, perfumes, etc.
  • Carrot
    Carrot
    The carrot is a root vegetable, usually orange in colour, though purple, red, white, and yellow varieties exist. It has a crisp texture when fresh...

     seed oil
    Carrot seed oil
    Carrot seed oil is the essential oil extract of the seed from the carrot plant Daucus carota. The oil has a woody, earthy sweet smell and is yellow or amber-coloured to pale orange-brown in appearance. The pharmocologically active constituents of carrot seed extract are three flavones: luteolin,...

     (essential oil), used in aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

    .
  • Cedarwood oil, primarily used in perfumes and fragrances.
  • Chamomile oil, There are many varieties of chamomile but only two are used in aromatherapy- Roman and German. Both have similar healing properties but German chamomile contains a higher level of azulin (an anti-inflammatory agent).
  • Calamus
    Sweet Flag
    Acorus calamus, commonly known as Sweet Flag or Calamus and erroneously as "rush" or "sedges", is a plant from the Acoraceae family, in the genus Acorus. It is a tall perennial wetland monocot with scented leaves and more strongly scented rhizomes...

     Root, used medicinally
  • Cinnamon
    Cinnamon
    Cinnamon is a spice obtained from the inner bark of several trees from the genus Cinnamomum that is used in both sweet and savoury foods...

     oil, used for flavoring and medicinally.
  • Cistus
    Cistus
    Cistus is a genus of flowering plants in the rockrose family Cistaceae, containing about 20 species . They are perennial shrubs found on dry or rocky soils throughout the Mediterranean region, from Morocco and Portugal through to the Middle East, and also on the Canary Islands...

     species
  • Citronella oil
    Citronella oil
    Citronella oil is one of the essential oils obtained from the leaves and stems of different species of Cymbopogon. The oil is used extensively as a source of perfumery chemicals such as citronellal, citronellol and geraniol...

    , from a plant related to lemon grass is used as an insect repellent, as well as medicinally.
  • Clary Sage
  • Clove leaf oil, used as a topical anesthetic to relieve dental pain.
  • Coffee
    Coffee
    Coffee is a brewed beverage with a dark,init brooo acidic flavor prepared from the roasted seeds of the coffee plant, colloquially called coffee beans. The beans are found in coffee cherries, which grow on trees cultivated in over 70 countries, primarily in equatorial Latin America, Southeast Asia,...

    , used to flavor food.
  • Coriander
    Coriander
    Coriander is an annual herb in the family Apiaceae. Coriander is native to southern Europe and North Africa to southwestern Asia. It is a soft, hairless plant growing to tall. The leaves are variable in shape, broadly lobed at the base of the plant, and slender and feathery higher on the...

  • Costmary oil (bible leaf oil), from the Tanacetum balsamita
    Tanacetum balsamita
    Tanacetum balsamita, or Balsamita vulgaris, is a perennial temperate herb known as costmary, alecost, balsam herb, bible leaf, or mint geranium....

  • Costus
    Costus
    Costus is a genus of perennial tropical herbaceous plants from the costus family . They are often characterized and distinguished from relatives such as Zingiber by their spiraling stems. The genus as a whole is thus often called spiral gingers, but this can also refer to C...

     Root, used medicinally
  • Cranberry
    Cranberry
    Cranberries are a group of evergreen dwarf shrubs or trailing vines in the subgenus Oxycoccus of the genus Vaccinium. In some methods of classification, Oxycoccus is regarded as a genus in its own right...

     seed oil, equally high in omega-3 omega-6 fatty acids, primarily used in the cosmetic industry.
  • Cubeb
    Cubeb
    Cubeb , or tailed pepper, is a plant in genus Piper, cultivated for its fruit and essential oil. It is mostly grown in Java and Sumatra, hence sometimes called Java pepper. The fruits are gathered before they are ripe, and carefully dried...

    , used medicinally and to flavor foods.
  • Cumin
    Cumin
    Cumin is a flowering plant in the family Apiaceae, native from the east Mediterranean to India. Its seeds are used in the cuisines of many different cultures, in both whole and ground form.-Etymology:...

     oil/Black seed oil, used as a flavor, particularly in meat products. Also used in veterinary medicine.
  • Cypress
    Cupressaceae
    The Cupressaceae or cypress family is a conifer family with worldwide distribution. The family includes 27 to 30 genera , which include the junipers and redwoods, with about 130-140 species in total. They are monoecious, subdioecious or dioecious trees and shrubs from 1-116 m tall...

  • Cypriol
  • Curry leaf, used medicinally and to flavor food.
  • Davana oil, from the Artemisia pallens
    Artemisia pallens
    Artemisia pallens, Dhavanam , is an aromatic herb, In genus of small herbs or shrubs, xerophytic In nature. The flowers are racemose panicles bear numerous small yellow flower heads or capitula, but the silvery white silky covering of down gives the foliage a Grey or white appearance.Davanam has...

    , used as a perfume
    Perfume
    Perfume is a mixture of fragrant essential oils and/or aroma compounds, fixatives, and solvents used to give the human body, animals, objects, and living spaces "a pleasant scent"...

     ingredient and as a germicide.
  • Dill oil
    Dill oil
    Dill oil is an essential oil extracted from the seeds or leaves/stems of the Dill plant. It can be used with water to create dill water.-Origin:...

    , chemically almost identical to caraway
    Caraway
    Caraway also known as meridian fennel, or Persian cumin is a biennial plant in the family Apiaceae, native to western Asia, Europe and Northern Africa....

     seed oil. High carvone
    Carvone
    Carvone is a member of a family of chemicals called terpenoids. Carvone is found naturally in many essential oils, but is most abundant in the oils from seeds of caraway and dill.-Stereoisomerism and odor:...

     content.
  • Elecampane
    Elecampane
    Elecampane, also called Horse-heal or Marchalan , is a perennial composite plant common in many parts of Great Britain, and ranges throughout central and Southern Europe, and in Asia as far eastwards as the Himalayas....

    , used medicinally.
  • Eucalyptus oil
    Eucalyptus oil
    Eucalyptus oil is the generic name for distilled oil from the leaf of Eucalyptus, a genus of the plant family Myrtaceae native to Australia and cultivated worldwide. Eucalyptus oil has a history of wide application, as a pharmaceutical, antiseptic, repellent, flavouring, fragrance and industrial uses...

    , historically used as a germicide. Commonly used in cough medicine, among other medicinal uses.
  • Fennel seed oil, used medicinally, particularly for treating colic
    Colic
    Colic is a form of pain which starts and stops abruptly. Types include:*Baby colic, a condition, usually in infants, characterized by incessant crying*Renal colic, a pain in the flank, characteristic of kidney stones...

     in infants.
  • Fenugreek
    Fenugreek
    Fenugreek is a plant in the family Fabaceae. Fenugreek is used both as a herb and as a spice . The leaves and sprouts are also eaten as vegetables...

     oil, used medicinally and for cosmetics from ancient times.
  • Fir
    Fir
    Firs are a genus of 48–55 species of evergreen conifers in the family Pinaceae. They are found through much of North and Central America, Europe, Asia, and North Africa, occurring in mountains over most of the range...

  • Frankincense
    Frankincense
    Frankincense, also called olibanum , is an aromatic resin obtained from trees of the genus Boswellia, particularly Boswellia sacra, B. carteri, B. thurifera, B. frereana, and B. bhaw-dajiana...

     oil, used for aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

     and in perfumes.
  • Galangal
    Galangal
    Galangal is a rhizome of plants of the genus Alpinia or Kaempferia in the ginger family Zingiberaceae, with culinary and medicinal uses originated from Indonesia...

    , used medicinally and to flavor food.
  • Galbanum
    Galbanum
    Galbanum is an aromatic gum resin, the product of certain umbelliferous Persian plant species, chiefly Ferula gummosa and Ferula rubricaulis. Galbanum-yielding plants grow plentifully on the slopes of the mountain ranges of northern Iran...

  • Geranium
    Pelargonium
    Pelargonium is a genus of flowering plants which includes about 200 species of perennials, succulents, and shrubs, commonly known as scented geraniums or storksbills. Confusingly, Geranium is the correct botanical name of a separate genus of related plants often called Cranesbills. Both Geranium...

     oil, used medicinally, particularly in aromatherapy, used for hormonal imbalance, for this reason geranium is often considered to be "female" oil.
  • Ginger oil, used medicinally in many cultures.
  • Goldenrod
    Goldenrod
    Solidago, commonly called goldenrods, is a genus of about 100 species of flowering plants in the family Asteraceae. Most are herbaceous perennial species found in the meadows and pastures, along roads, ditches and waste areas in North America. There are also a few species native to Mexico, South...

  • Grapefruit
    Grapefruit
    The grapefruit , is a subtropical citrus tree known for its sour fruit, an 18th-century hybrid first bred in Barbados. When found, it was named the "forbidden fruit"; it has also been misidentified with the pomelo or shaddock , one of the parents of this hybrid, the other being sweet orange The...

     oil, extracted from the peel of the fruit. Used in aromatherapy. Contains 90% limonene
    Limonene
    Limonene is a colourless liquid hydrocarbon classified as a cyclic terpene. The more common D isomer possesses a strong smell of oranges. It is used in chemical synthesis as a precursor to carvone and as a renewably-based solvent in cleaning products....

    .
  • Henna
    Henna
    Henna is a flowering plant used since antiquity to dye skin, hair, fingernails, leather and wool. The name is also used for dye preparations derived from the plant, and for the art of temporary tattooing based on those dyes...

     oil, used medicinally.
  • Helichrysum
  • Horseradish
    Horseradish
    Horseradish is a perennial plant of the Brassicaceae family, which also includes mustard, wasabi, broccoli, and cabbages. The plant is probably native to south eastern Europe and the Arab World , but is popular around the world today...

     oil
  • Hyssop
    Hyssop
    Hyssop is a genus of about 10-12 species of herbaceous or semi-woody plants in the family Lamiaceae, native from the east Mediterranean to central Asia. They are aromatic, with erect branched stems up to 60 cm long covered with fine hairs at the tips. The leaves are narrow oblong, 2–5 cm...

  • Idaho Tansy
  • Jasmine
    Jasmine
    Jasminum , commonly known as jasmines, is a genus of shrubs and vines in the olive family . It contains around 200 species native to tropical and warm temperate regions of the Old World...

     oil, used for its flowery fragrance.
  • Juniper
    Juniper
    Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, there are between 50-67 species of juniper, widely distributed throughout the northern hemisphere, from the Arctic, south to tropical Africa in the Old World, and to the...

     berry oil, used as a flavor. Also used medicinally, including traditional medicine.
  • Laurus nobilis
  • Lavender oil
    Lavender oil
    Lavender oil is an essential oil obtained by distillation from the flower spikes of certain species of lavender. Two forms are distinguished, lavender flower oil, a colorless oil, insoluble in water, having a density of 0.885 g/mL; and lavender spike oil, a distillate from the herb Lavandula...

    , used primarily as a fragrance. Also used medicinally.
  • Ledum
    Ledum
    Ledum is a genus name formerly widely recognised in the family Ericaceae, including 8 species of evergreen shrubs native to cool temperate and subarctic regions of the Northern Hemisphere and commonly known as Labrador Tea....

  • Lemon oil
    Lemon
    The lemon is both a small evergreen tree native to Asia, and the tree's ellipsoidal yellow fruit. The fruit is used for culinary and non-culinary purposes throughout the world – primarily for its juice, though the pulp and rind are also used, mainly in cooking and baking...

    , similar in fragrance to the fruit. Unlike other essential oils, lemon oil is usually cold pressed. Used medicinally, as an antiseptic, and in cosmetics.
  • Lemongrass. Lemongrass is a highy fragrant grass from India. In India, it is used to help treat fevers and infections. The oil is very useful for insect repellent.
  • Lime
    Lime (fruit)
    Lime is a term referring to a number of different citrus fruits, both species and hybrids, which are typically round, green to yellow in color, 3–6 cm in diameter, and containing sour and acidic pulp. Limes are a good source of vitamin C. Limes are often used to accent the flavors of foods and...

    , anti septic, anti viral, astringent, aperitif, bactericidal, disinfectant, febrifuge, haemostatic, restorative and tonic.
  • Litsea cubeba
    Litsea
    Litsea is a genus of evergreen or deciduous trees or shrubs belonging to the Laurel family, Lauraceae. The genus includes 200 to 400 species in tropical and subtropical areas of both hemispheres.-Overview:Trees or shrubs, dioecious...

     oil, lemon-like scent, often used in perfumes and aromatherapy.
  • Mandarin
    Mandarin orange
    The orange, also known as the ' or mandarine , is a small citrus tree with fruit resembling other oranges. Mandarin oranges are usually eaten plain or in fruit salads...

  • Marjoram
    Marjoram
    Marjoram is a somewhat cold-sensitive perennial herb or undershrub with sweet pine and citrus flavours...

  • Melaleuca
    Melaleuca
    Melaleuca is a genus of plants in the myrtle family Myrtaceae known for its natural soothing and cleansing properties. There are well over 200 recognised species, most of which are endemic to Australia...

     See Tea tree oil
    Tea tree oil
    Tea tree oil, or melaleuca oil, is a pale yellow colour to nearly clear essential oil with a fresh camphoraceous odor. It is taken from the leaves of the Melaleuca alternifolia, which is native to the northeast coast of New South Wales, Australia...

  • Melissa oil (Lemon balm)
    Lemon balm
    Lemon balm , not to be confused with bee balm, Monarda species, is a perennial herb in the mint family Lamiaceae, native to southern Europe and the Mediterranean region....

    , sweet smelling oil used primarily medicinally, particularly in aromatherapy.
  • Mentha arvensis
    Mentha arvensis
    Mentha arvensis is a species of mint with a circumboreal distribution. It is native to the temperate regions of Europe and western and central Asia, east to the Himalaya and eastern Siberia, and North America.It is a herbaceous perennial plant growing to 10–60 cm tall...

     oil/Mint oil, used in flavoring toothpastes, mouthwashes and pharmaceuticals, as well as in aromatherapy and other medicinal applications.
  • Mountain Savory
    Winter savory
    Winter savory is a perennial herb in the family Lamiaceae, native to warm temperate regions of southern Europe.It is a semi-evergreen, semi-woody subshrub growing to over tall. The leaves are opposite, oval-lanceolate, 1–2 cm long and 5 mm broad...

  • Mugwort
    Artemisia vulgaris
    Artemisia vulgaris is one of several species in the genus Artemisia which have common names that include the word mugwort. This species is also occasionally known as Felon Herb, Chrysanthemum Weed, Wild Wormwood, Old uncle Henry, Sailor's Tobacco, Naughty Man, Old Man or St...

     oil, used in ancient times for medicinal and magical purposes. Currently considered to be a neurotoxin
    Neurotoxin
    A neurotoxin is a toxin that acts specifically on nerve cells , usually by interacting with membrane proteins such as ion channels. Some sources are more general, and define the effect of neurotoxins as occurring at nerve tissue...

    .
  • Mustard oil (essential oil), containing a high percentage of allyl isothiocyanate
    Allyl isothiocyanate
    Allyl isothiocyanate is the organosulfur compound with the formula CH2CHCH2NCS. This colorless oil is responsible for the pungent taste of mustard, horseradish, and wasabi. This pungency and the lachrymatory effect of AITC is mediated through the TRPA1 and TRPV1 ion channels...

     or other isothiocyanate
    Isothiocyanate
    Isothiocyanate is the chemical group –N=C=S, formed by substituting sulfur for oxygen in the isocyanate group. Many natural isothiocyanates from plants are produced by enzymatic conversion of metabolites called glucosinolates. These natural isothiocyanates, such as allyl isothiocyanate, are also...

    s, depending on the species of mustard
  • Myrrh
    Myrrh
    Myrrh is the aromatic oleoresin of a number of small, thorny tree species of the genus Commiphora, which grow in dry, stony soil. An oleoresin is a natural blend of an essential oil and a resin. Myrrh resin is a natural gum....

     oil, warm, slightly musty smell. Used medicinally.
  • Myrtle
  • Neem oil
    Neem oil
    Neem oil is a vegetable oil pressed from the fruits and seeds of the neem , an evergreen tree which is endemic to the Indian subcontinent and has been introduced to many other areas in the tropics...

     or Neem Tree Oil
  • Neroli
    Neroli
    Neroli oil is a plant oil produced from the blossom of the bitter orange tree . Its scent is sweet, honeyed and somewhat metallic, whereas bergamot, being rich in linalool , has more of an aromatic, soft, floralcy.- Production :The blossoms are gathered, usually by hand, in late April to...

     is produced from the blossom of the bitter orange tree.
  • Nutmeg
    Nutmeg
    The nutmeg tree is any of several species of trees in genus Myristica. The most important commercial species is Myristica fragrans, an evergreen tree indigenous to the Banda Islands in the Moluccas of Indonesia...

  • Orange oil
    Orange oil
    Orange oil is an essential oil produced by cells inside the rind of an orange fruit. In contrast to most essential oils, it is extracted as a by-product of orange juice production by centrifugation, producing a cold-pressed oil...

    , like lemon oil, cold pressed rather than distilled. Consists of 90% d-Limonene
    Limonene
    Limonene is a colourless liquid hydrocarbon classified as a cyclic terpene. The more common D isomer possesses a strong smell of oranges. It is used in chemical synthesis as a precursor to carvone and as a renewably-based solvent in cleaning products....

    . Used as a fragrance, in cleaning products and in flavoring foods.
  • Oregano
    Oregano
    Oregano – scientifically named Origanum vulgare by Carolus Linnaeus – is a common species of Origanum, a genus of the mint family . It is native to warm-temperate western and southwestern Eurasia and the Mediterranean region.Oregano is a perennial herb, growing from 20–80 cm tall,...

     oil, contains thymol
    Thymol
    Thymol is a natural monoterpene phenol derivative of cymene, C10H14O, isomeric with carvacrol, found in oil of thyme, and extracted from Thymus vulgaris and various other kinds of plants as a white crystalline substance of a pleasant aromatic odor and strong antiseptic properties...

     and carvacrol
    Carvacrol
    Carvacrol, or cymophenol, C6H3CH3, is a monoterpenoid phenol. It has a characteristic pungent, warm odor of oregano and a pizza-like taste.- Natural occurrence :...

    , making it a useful fungicide
    Fungicide
    Fungicides are chemical compounds or biological organisms used to kill or inhibit fungi or fungal spores. Fungi can cause serious damage in agriculture, resulting in critical losses of yield, quality and profit. Fungicides are used both in agriculture and to fight fungal infections in animals...

    . Also used to treat digestive problems.
  • Orris
    Orris root
    Orris root is a term used for the roots Iris germanica, Iris florentina, and Iris pallida. Once important in western herbal medicine, it is now used mainly as a fixative and base note in perfumery, as well as an ingredient in many brands of gin....

     oil is extracted from the roots of the Florentine iris (Iris florentina) and used as a flavouring agent, in perfume, and medicinally.
  • Palo Santo
    Bursera graveolens
    Bursera graveolens, known in Spanish as is a wild tree native from Mexico and the Yucatan Peninsula to Peru and Venezuela that inhabits the South American Gran Chaco region . It is also found in Costa Rica, El Salvador, Guatemala, Honduras, Colombia, Ecuador, Peru and on the Galapagos islands...

  • Parsley
    Parsley
    Parsley is a species of Petroselinum in the family Apiaceae, native to the central Mediterranean region , naturalized elsewhere in Europe, and widely cultivated as an herb, a spice and a vegetable.- Description :Garden parsley is a bright green hairless biennial herbaceous plant in temperate...

     oil, used in soaps, detergents, colognes, cosmetics and perfumes, especially men’s fragrances.
  • Patchouli
    Patchouli
    Patchouli is a species from the genus Pogostemon and a bushy herb of the mint family, with erect stems, reaching two or three feet in height and bearing small, pale pink-white flowers...

     oil, very common ingredient in perfumes.
  • Perilla
    Perilla
    Perilla is the common name of the herbs of the genus Perilla of the mint family, Lamiaceae. In mild climates, the plant reseeds itself. There are both green-leafed and purple-leafed varieties, which are generally recognized as separate species by botanists. The leaves resemble stinging nettle...

     essential oil, extracted from the leaves of the perilla
    Perilla
    Perilla is the common name of the herbs of the genus Perilla of the mint family, Lamiaceae. In mild climates, the plant reseeds itself. There are both green-leafed and purple-leafed varieties, which are generally recognized as separate species by botanists. The leaves resemble stinging nettle...

     plant. Contains about 50-60% perillaldehyde
    Perillaldehyde
    Perillaldehyde, or perilla aldehyde, is a natural organic compound found most abundantly in the annual herb perilla, but also in a wide variety of other plants and essential oils...

    .
  • Pennyroyal
    Pennyroyal
    Pennyroyal refers to two plants in the mint family, Lamiaceae. For the American species, see American pennyroyal. The European pennyroyal, Mentha pulegium, , is a plant in the mint genus, within the family Lamiaceae. Crushed Pennyroyal leaves exhibit a very strong fragrance similar to spearmint...

     oil, highly toxic. It is abortifacient
    Abortifacient
    An abortifacient is a substance that induces abortion. Abortifacients for animals that have mated undesirably are known as mismating shots....

     and can even in small quantities cause acute liver and lung damage.
  • Peppermint oil, used in a wide variety of medicinal applications.
  • Petitgrain
    Petitgrain
    Petitgrain is an essential oil that is extracted from the green twigs of the bitter orange plant via steam distillation.-Production:...

  • Pine oil
    Pine oil
    Pine oil is an essential oil obtained by the steam distillation of needles, twigs and cones from a variety of species of pine, particularly Pinus sylvestris....

    , used as a disinfectant, and in aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

    .
  • Ravensara
    Ravensara aromatica
    Ravensara aromatica is a member of the Lauraceae family, and originates in Madagascar. The name ravensara is a latinization of the Malagasy word . Other Malagasy names include , and . The leaves and twigs of R. aromatica have a mildly camphorous aroma similar to eucalyptus. The essential oil of R...

  • Red Cedar
    Red Cedar
    - Trees :* Toona ciliata, an Australian / Asian rainforest tree* Juniperus virginiana, a North American juniper* Thuja plicata, a North American tree in the cypress family- Places :Canada* Red Cedar Lake , a lake in the Temagami region...

  • Roman Chamomile
  • Rose oil
    Rose oil
    Rose oil, meaning either rose otto or rose absolute, is the essential oil extracted from the petals of various types of rose...

    , distilled from rose petals, Used primarily as a fragrance.
  • Rosehip oil, distilled from the seeds of the Rosa rubiginosa or Rosa mosqueta. Used medicinally.
  • Rosemary
    Rosemary
    Rosemary, , is a woody, perennial herb with fragrant, evergreen, needle-like leaves and white, pink, purple or blue flowers, native to the Mediterranean region. It is a member of the mint family Lamiaceae, which includes many other herbs, and is one of two species in the genus Rosmarinus...

     oil, distilled from the flowers of Rosmarinus officinalis. Used in aromatherapy, topically to sooth muscles, and medicinal for its antibacterial and antifungal properties.
  • Rosewood oil, used primarily for skin care applications. Also used medicinally.
  • Sage
    Common sage
    Salvia officinalis is a small, perennial, evergreen subshrub, with woody stems, grayish leaves, and blue to purplish flowers. It is a member of the family Lamiaceae and is native to the Mediterranean region, though it has naturalized in many places throughout the world...

     oil
    Sage oil
    Sage oil is the essential oil made from the culinary herb sage, Salvia officinalis. In addition to its valuable flavoring characteristics, sage oil can contain as much as 50% thujone by weight. The exact amount varies based on the time in the season and which part of the plant is tested...

    , used medicinally.

  • Sandalwood oil
    Sandalwood
    Sandalwood is the name of a class of fragrant woods from trees in the genus Santalum. The woods are heavy, yellow, and fine-grained, and unlike many other aromatic woods they retain their fragrance for decades. As well as using the harvested and cut wood in-situ, essential oils are also extracted...

    , used primarily as a fragrance, for its pleasant, woody fragrance.
  • Sassafras
    Sassafras
    Sassafras is a genus of three extant and one extinct species of deciduous trees in the family Lauraceae, native to eastern North America and eastern Asia.-Overview:...

     oil, from sassafras root bark. Used in aromatherapy, soap-making, perfumes, and the like. Formerly used as a spice, and as the primary flavoring of root beer
    Root beer
    Root beer is a carbonated, sweetened beverage, originally made using the root of a sassafras plant as the primary flavor. Root beer, popularized in North America, comes in two forms: alcoholic and soft drink. The historical root beer was analogous to small beer in that the process provided a drink...

    , inter alia.
  • Savory
    Savory (herb)
    Satureja is a genus of aromatic plants of the family Lamiaceae, related to rosemary and thyme. There are about 30 species called savories, of which Summer savory and Winter savory are the most important in cultivation.-Description:...

     oil, from Satureja species. Used in aromatherapy, cosmetic and soap-making applications.
  • Schisandra
    Schisandra chinensis
    Schisandra chinensis is a deciduous woody vine native to forests of Northern China and the Russian Far East. It is hardy in USDA Zone 4. The plant likes some shade with moist, well-drained soil...

     oil, from Schisandra chinensis
    Schisandra chinensis
    Schisandra chinensis is a deciduous woody vine native to forests of Northern China and the Russian Far East. It is hardy in USDA Zone 4. The plant likes some shade with moist, well-drained soil...

    , used medicinally.
  • Spearmint
    Spearmint
    Mentha spicata syn. M. cordifolia is a species of mint native to much of Europe and southwest Asia, though its exact natural range is uncertain due to extensive early cultivation. It grows in wet soils...

     oil, often used in flavoring mouthwash and chewing gum, among other applications.
  • Spikenard
    Spikenard
    Spikenard is a flowering plant of the Valerian family that grows in the Himalayas of China, also found growing in the northern region of India and Nepal. The plant grows to about 1 m in height and has pink, bell-shaped flowers...

    , used medicinally.
  • Spruce
    Spruce
    A spruce is a tree of the genus Picea , a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal regions of the earth. Spruces are large trees, from tall when mature, and can be distinguished by their whorled branches and conical...

     has calming and elevating properties. It can be used as a topical application for muscular aches and pains, poor circulation, and rheumatism. Spruce Oil has also been used to improve breathing conditions of asthma, bronchitis, coughs, and general weakness.
  • Star anise
    Star anise
    Illicium verum, commonly called Star anise, star aniseed, or Chinese star anise, is a spice that closely resembles anise in flavor, obtained from the star-shaped pericarp of Illicium verum, a small native evergreen tree of northeast Vietnam and southwest China...

     oil, highly fragrant oil using in cooking. Also used in perfumery and soaps, has been used in toothpastes, mouthwashes, and skin creams. 90% of the world's star anise
    Star anise
    Illicium verum, commonly called Star anise, star aniseed, or Chinese star anise, is a spice that closely resembles anise in flavor, obtained from the star-shaped pericarp of Illicium verum, a small native evergreen tree of northeast Vietnam and southwest China...

     crop is used in the manufacture of Tamiflu, a drug
    Drug
    A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.In pharmacology, a...

     used to treat influenza
    Influenza
    Influenza, commonly referred to as the flu, is an infectious disease caused by RNA viruses of the family Orthomyxoviridae , that affects birds and mammals...

    , and is hoped to be useful for avian flu
    H5N1
    Influenza A virus subtype H5N1, also known as "bird flu", A or simply H5N1, is a subtype of the influenza A virus which can cause illness in humans and many other animal species...

  • Tangerine
    Tangerine
    __notoc__The tangerine is an orange-colored citrus fruit which is closely related to the Mandarin orange . Taxonomically, it should probably be formally named as a subspecies or variety of Citrus reticulata; further work seems to be required to ascertain its correct scientific name...

  • Tarragon
    Tarragon
    Tarragon or dragon's-wort is a perennial herb in the family Asteraceae related to wormwood. Corresponding to its species name, a common term for the plant is "dragon herb". It is native to a wide area of the Northern Hemisphere from easternmost Europe across central and eastern Asia to India,...

     oil, distilled from Artemisia dracunculus, used medicinally.
  • Tea tree oil
    Tea tree oil
    Tea tree oil, or melaleuca oil, is a pale yellow colour to nearly clear essential oil with a fresh camphoraceous odor. It is taken from the leaves of the Melaleuca alternifolia, which is native to the northeast coast of New South Wales, Australia...

    , distilled from Melaleuca alternifolia
    Melaleuca alternifolia
    Melaleuca alternifolia, commonly known as Narrow-leaved Paperbark, Narrow-leaved Tea-tree, Narrow-leaved Ti-tree, or Snow-in-summer, is a species of tree or tall shrub in the plant genus Melaleuca. Native to Australia, it occurs on the north coast and adjacent ranges of New South Wales...

    , used medicinally. Being a powerful antiseptic, antibacterial, and antiviral agent, tea tree's ability to fight infection is second to none.
  • Thyme
    Thyme
    Thyme is a culinary and medicinal herb of the genus Thymus.-History:Ancient Egyptians used thyme for embalming. The ancient Greeks used it in their baths and burnt it as incense in their temples, believing it was a source of courage...

     oil, used medicinally.
  • Tsuga
    Tsuga
    Tsuga is a genus of conifers in the family Pinaceae. The common name hemlock is derived from a perceived similarity in the smell of its crushed foliage to that of the unrelated plant poison hemlock....

     belongs to the pine tree family. It is used as analgesic, antirheumatic, blood cleanser, and stimulant. It treats cough, respiratory conditions, kidney ailments, urinary infections.
  • Turmeric
    Turmeric
    Turmeric is a rhizomatous herbaceous perennial plant of the ginger family, Zingiberaceae. It is native to tropical South Asia and needs temperatures between 20 °C and 30 °C and a considerable amount of annual rainfall to thrive...

    , used medicinally and to flavor food
  • Valerian
    Valerian (herb)
    Valerian is a hardy perennial flowering plant, with heads of sweetly scented pink or white flowers which bloom in the summer months. Valerian flower extracts were used as a perfume in the sixteenth century....

     is used for insomnia, migraines, nervous dyspepsia
    Dyspepsia
    Dyspepsia , also known as upset stomach or indigestion, refers to a condition of impaired digestion. It is a medical condition characterized by chronic or recurrent pain in the upper abdomen, upper abdominal fullness and feeling full earlier than expected when eating...

    , and dandruff
    Dandruff
    Dandruff is the shedding of dead skin cells from the scalp . Dandruff is sometimes caused by frequent exposure to extreme heat and cold. As it is normal for skin cells to die and flake off, a small amount of flaking is normal and common; about 487,000 cells/cm2 get released normally after...

    .
  • Vetiver oil (khus oil) a thick, amber oil, primarily from India
    India
    India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

    . Used as a fixative
    Fixative (perfumery)
    In perfumery, a fixative is a natural or synthetic substance used to reduce the evaporation rate and improve stability when added to more volatile components. This allows the final product to last longer while keeping its original fragrance. Fixatives are indispensable commodities to the perfume...

     in perfume
    Perfume
    Perfume is a mixture of fragrant essential oils and/or aroma compounds, fixatives, and solvents used to give the human body, animals, objects, and living spaces "a pleasant scent"...

    ry, and in aromatherapy
    Aromatherapy
    Aromatherapy is a form of alternative medicine that uses volatile plant materials, known as essential oils, and other aromatic compounds for the purpose of altering a person's mind, mood, cognitive function or health....

  • Western red cedar
  • Wintergreen
    Wintergreen
    Wintergreen is a group of plants. Wintergreen once commonly referred to plants that continue photosynthesis throughout the winter...

     can be used as an analgesic, anodyne, anti rheumatic & anti arthritic, anti spasmodic, anti septic, aromatic, astringent, carminative, diuretic, emenagogue and stimulant
  • Yarrow oil
    Yarrow oil
    Yarrow essential oil is a volatile oil including a chemical called proazulenes.The dark blue essential oil, extracted by steam distillation of the flowers, is generally used as an anti-inflammatory or in chest rubs for colds and influenza. For a massage oil for inflamed joints, dilute 5-10 drops...

     is used medicinally, to relieve joint pain
  • Ylang-ylang
    Ylang-ylang
    Cananga odorata, commonly called Ylang-ylang , cananga tree, ilang-ilang, kenanga , fragrant cananga, Macassar-oil plant or perfume tree),is a tree valued for its perfume...

     is used for calming, antiseptic, and aphrodisiac purposes, as well as hypertension and skin diseases.
  • Zedoary
    Zedoary
    Zedoary is the name for a perennial herb and member of the genus Curcuma Linn., family Zingiberaceae. The plant is native to India and Indonesia...

    , used medicinally and to flavor food

Books

  • Julia Lawless, The Illustrated Encyclopedia of Essential Oils: The Complete Guide to the Use of Oils in Aromatherapy and Herbalism (ISBN 1852307218) 1995
  • Valerie Ann Worwood, The Complete Book of Essential Oils & Aromatherapy
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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