Vetiver
- Chrysopogon zizanioides
(previously Vetiveria zizanioides
) is a perennial grass of the Poaceae family, native to India. The name comes from Tamil. In western and northern India, it is popularly known as khus
(Hindi-Urdu:???/??), giving the earlier English names cuscus
, cuss cuss
, kuss-kuss grass
, etc. [1] Vetiver can grow up to 1.5 meters high and form clumps as wide. The stems are tall and the leaves are long, thin, and rather rigid; the flowers are brownish purple. Unlike most grasses, which form horizontally spreading mat-like root systems, vetiver's roots grow downward, 2–4 meters in depth. Vetiver is closely related to other fragrant grasses such as Lemon Grass (Cymbopogon citratus
), citronella (Cymbopogon nardus
, C. winterianus
), and Palmarosa (Cymbopogon martinii
).
Though it originates in India, vetiver is widely cultivated in the tropical regions of the world. The world's major producers include Haiti, India, Java, and Réunion. In Malayalam the root is known as ramaccham.
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Common Names
Common Names for Vetivert Grass
China: Xiang-Geng-chao;
Ethiopia
Amharic: Yesero mekelakeya;
Ghana
Dagomba: Kulikarili;
India
Hindi: Bala, Balah, Bena, Ganrar, Khas,
Onei, Panni;
Urdu: Khas;
Bengali: Khas-Khas;
Gujarati: Valo;
Marathi: Vala Khas-Khas;
Mundari: Birnijono, Sirum, Sirumjon;
Oudh: Tin;
Punjabi: Panni;
Sadani: Birni;
Santali: Sirom;
Telugu: Avurugaddiveru, Kuruveeru,
Lamajjakamuveru, Vettiveeru,
Vidavaliveru;
Tamil: Ilamichamver, Vettiver, Vilhalver,
Viranam;
Kannada: Vettiveeru, Laamanche, Kaadu,
Karidappasajje hallu;
Malayalam: Ramaccham, Ramachehamver
Vettiveru;
Indonesia: Aga wangi, Larasetu, Larawestu,
Raraweatu;
Sundanese: Janur, Narawastu, Usar;
Iran
Persian: Bikhiwala, Khas;
Malaysia: Nara wastu, Nara setu, Naga setu,
Akar wangi (fragrant root),
Rumput wangi (fragrant grass),
Kusu-kusu;
Nigeria
Hausa: Jema;
Fulani: So'dornde, So'mayo, Chor'dor'de,
Ngongonari, Zemako;
Philippines: Ilib, Mora, Moras, Moro, Muda
Narawasta, Raiz de moras,
Rimodas, Rimora, Rimoras,
Tres-moras, Vetiver, Amoora,
Amoras, Anias de moras, Giron
Sahel;
Bambara: Babin, Ngongon, Ngoko ba;
Songhai: Diri;
Fulani: Kieli, Dimi, Pallol;
Sarakolle: Kamare;
Mossi: Roudoum;
Gurma: Kulkadere;
Senegal
Wolof: Sep, Tiep;
Fulani: Toul;
Tukulor: Semban;
Sierra Leone
Mende: Pindi;
Susu: Barewali;
Temne: An-wunga ro-gban;
Sri Lanka
Sinhalese: Saivandera, Savandramul;
Thailand: Faeg;
Uses
Erosion control
Several aspects of Vetiver make it an excellent
erosion control plant in warmer climates. Unlike most grasses, Vetiver does not form a horizontal mat of roots; rather, the roots grow almost exclusively downward, 2–4 meters. This makes vetiver an excellent stabilizing hedge for stream banks, terraces, and rice paddies. The close growing
culms also help to block the runoff of
surface water. Because Vetiver propagates itself by small
offsets instead of underground
stolons, it is noninvasive and can easily be controlled by cultivation of the soil at the boundary of the hedge.
The
Vetiver System, a technology of soil conservation and water quality management, is based on the use of the Vetiver plant.
Perfumery and aromatherapy
Vetiver is mainly cultivated for the fragrant essential oil distilled from its roots. Worldwide production is estimated at about 250 tons per annum (Lavania). Due to its excellent
fixative properties, Vetiver is used widely in high end
perfumes. It is contained in 90% of all western perfumes (Lavania).
Haiti is one of the leading producers of Vetiver in the world, along with
Java,
China,
India,
Brazil, and
Japan. The
United States,
Europe,
India, and
Japan are the main consumers.
In perfumery, the older French spelling,
vetyver
, is often used.
Medicinal use
Vetiver has been used in traditional medicine in South Asia, Southeast Asia, and West Africa.
[2]
Old Tamil literature mentions the use of Vetiver for medical purposes.
In-House use
Mats made by weaving Vetiver roots and binding them with ropes/cords are used in India to cool rooms in a house during summer. The mats are typically hung in the doorway and kept moist by spraying with water periodically. It acts like an air-cooler when wind from a fan or outside hits it. It also adds a pleasant aroma in the house which is commonly described as "cool" and "refreshing".
In the hot summer months in India, sometimes a
muslin sachet of Vetiver roots is tossed into the earthen pot that keeps the household's drinking water cool. Like a
bouquet garni, the bundle lends its distinctive flavor and aroma to the water.
Essential Oil
Composition
Vetiver oil
or
khus oil
is a complex oil containing over 100 identified components. Typical make up is as follows:
benzoic acid
| furfurol
|
vetivene
| vetivenyl vetivenate
|
terpinen-4-ol
| 5-epiprezizane
|
Khusimene
| a-muurolene
|
Khusimone
| Calacorene
|
ß-humulene
| a-longipinene
|
?-selinene
| d-selinene
|
d-cadinene
| valencene
|
Calarene,-gurjunene
| a-amorphene
|
Epizizanal
| 3-epizizanol
|
Khusimol
| Iso-khusimol
|
Valerenol
| ß-vetivone
|
a-vetivone
| vetivazulene
|
The oil is amber brown and rather thick. The odor of vetiver oil is described as deep, sweet, woody, smoky, earthy, amber, balsam. The best quality oil is obtained from roots that are 18 to 24 months old. The roots are dug up and cleaned then dried. Before the distillation, the roots are chopped and soaked in water. The distillation process can take up to 18 to 24 hours. After the distillate separates into the
essential oil and
hydrosol, the oil is skimmed off and allowed to age for a few months to allow some undesirable notes which form during the distillation to dissipate. Like
patchouli and
sandalwood essential oils, the odor of vetiver develops and improves with aging. The characteristics of the oil can vary significantly depending on where the grass is grown and the climate and soil conditions. The oil distilled in Haiti and Réunion has a more floral quality to it and is considered of higher quality than the oil from Java which has a smokier scent. In the north of India, an oil is distilled from wild-growing vetiver. This oil is known as Khus or Khas and is considered superior to the oil obtained from the cultivated variety. It is rarely found outside of India as most of it is consumed within the country.
Notes
References
- Oxford English Dictionary, 2nd edition, 1989.
- Narong Chomchalow, "The Utilization of Vetiver
as Medicinal and Aromatic Plants with Special Reference to Thailand", Office of the Royal Development Projects Board, Bangkok, Thailand
September 2001, Pacific Rim Vetiver Network Technical Bulletin No. 2001/1.[1]