Essential Oil -Cajeput
Essential Oil – Cajeput
Botanical Information
Cajeput (Melaleuca cajeputi) belongs to the Myrtaceae family and is a tall evergreen tree that can grow up to 30 metres in height. It has thick, pointed leaves, white flowers, and a flexible trunk covered with whitish, papery bark that peels away easily. The name “cajeput” is derived from the Malay term “caju-puti,” meaning “white wood,” referring to the pale colour of its timber. It is also known by several other names, including Melaleuca minor, cajuput, white tea tree, white wood, swamp tea tree, punk tree, and paperbark tree.
Distribution and Traditional Uses
Cajeput grows naturally throughout Malaysia, Indonesia, the Philippines, Vietnam, Java, Australia, and other parts of Southeast Asia. Several other Melaleuca species, such as Melaleuca quinquenervia, are also used in the production of cajeput oil. It is closely related to other members of the Melaleuca genus, including tea tree, niaouli, eucalyptus, and clove.
For centuries, Cajeput has been highly valued in traditional Eastern medicine. It has been used to help relieve colds, headaches, sore throats, toothaches, muscular pain, rheumatism, fever, cholera, and various skin disorders. In Western herbal medicine, the essential oil has traditionally been used to support respiratory health, urinary tract infections, rheumatism, chronic bronchitis, laryngitis, cystitis, and to help expel intestinal roundworms.
Essential Oil and Characteristics
Cajeput essential oil is obtained through steam distillation of the fresh leaves and young twigs. The oil is a pale yellowish-green, mobile liquid with a fresh camphoraceous, medicinal aroma. Its slight green tint results from trace amounts of copper naturally present in the tree. Compared with eucalyptus oil, Cajeput has a softer, slightly fruitier fragrance while retaining its refreshing medicinal character.
Chemical Composition
The principal constituent of Cajeput essential oil is cineole (eucalyptol), which may range from 14–65%, depending on the plant source and growing conditions. Other significant constituents include terpineol, terpinyl acetate, pinene, nerolidol, and several naturally occurring trace compounds.
Therapeutic Benefits
Cajeput essential oil possesses mildly analgesic, antimicrobial, antineuralgic, antispasmodic, antiseptic, anthelmintic, diaphoretic, carminative, expectorant, febrifuge, insecticidal, sudorific, and tonic properties.
In aromatherapy, it is commonly used to help soothe insect bites, oily skin, and minor blemishes. It may also support relief from arthritis, muscular aches, rheumatism, and joint discomfort. For the respiratory system, it is traditionally used to ease asthma, bronchitis, catarrh, coughs, sinus congestion, sinusitis, and sore throats. It also supports urinary tract health in cases of cystitis, urethritis, and urinary infections. Additionally, Cajeput is valued for strengthening the immune system during colds, influenza, and viral infections.
Safety and Precautions
Cajeput essential oil is generally regarded as non-toxic and non-sensitising when used appropriately. However, it may cause mild skin irritation if applied in high concentrations. Proper dilution before topical application is recommended.
Industrial Uses
Cajeput essential oil is widely used in the pharmaceutical and dental industries as an antiseptic ingredient. It is commonly incorporated into expectorants, throat lozenges, gargles, and tonic formulations. In the fragrance industry, it is used as a freshening agent in soaps, cosmetics, detergents, and perfumes. It is also occasionally employed as a flavouring ingredient in selected food products and soft drinks.
