SEARCH · PubMed Health

Results for “Tea Tree Oil”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

220 records · Page 13Linked to original sources

PubMed1996

The potential effectiveness of essential oils as a treatment for headlice, Pediculus humanus capitis.

Essential oils of aniseed, cinnamon leaf, red thyme, tea tree, peppermint, nutmeg, rosemary, and pine were tested in vitro against lice, Pediculus humanus. All the oils except for rosemary and pine were found to be effective in the laboratory when applied in an alcoholic solution and followed by a rinse the following morning in an essential oil/vinegar/water mixture. Peppermint and nutmeg were only used as a blend rather than as individual oils. Problems of solubility and toxicity are discussed, as are possible mechanisms of action. Phenols, phenolic ethers, ketones, and oxides (1,8-cineole) appear to be the major toxic components of these essential oils when used on lice. Aldehydes and sesquiterpenes may also play a role.

Humans↗

PubMed2006

Acaricidal effects of herb essential oils against Dermatophagoides farinae and D. pteronyssinus (Acari: Pyroglyphidae) and qualitative analysis of a herb Mentha pulegium(pennyroyal).

This experiment was undertaken to screen the acaricidal effects of herb essential oils (pennyroyal, ylang ylang, citronella, lemon grass, tea tree, and rosemary) at different doses (0.1, 0.05, 0.025, 0.0125, and 0.00625 microliter/cm(2)) and exposure times (5, 10, 20, 20, 30 and 60 min) on house dust mites Dermatophgoides farinae and D. pteronyssinus. The most effective acaricidal components of pennyroyal (Mentha pulegium) were analyzed using a gas chromatography-mass spectrometer (GC-MS). Of these essential oils, the most effective was pennyroyal, which is composed essentially of pulegone (> 99%), at a dose of 0.025 microliter/cm(2), which at an exposure time of 5 min killed more than 98% of house dust mites. In the pennyroyal fumigation test, the closed method was more effective than the open method and maximum acaricidal effect was 100% at 0.025 microliter/cm(2), 60 min. The results show that herb essential oils, in particular, pennyroyal was proved to have potent acaricidal activity.

Animals↗

PubMed2005

Phytochemical analysis and biological screening of leaf and twig extracts from Kunzea ericoides.

Kunzea ericoides is a member of the Myrtle group of tea trees. Leaf and twig material of K. ericoides was extracted with different solvents to afford terpene (including the essential oil), flavonoid and lipid classes (but no alkaloid class), which were subsequently screened for antibacterial, antitumour, cytotoxic, antioxidant and antiinflammatory activity. Differences were observed in the biological activity for the chemical classes tested, and in general, the leaf extracts were comparatively more bioactive than the twig extracts. The leaf lipid extract was the most bioactive fraction, exhibiting antibacterial, antitumour and antiinflammatory activity. Thin layer chromatography and gas chromatography-mass spectroscopy analysis of each extract revealed previously identified phytochemicals that may be responsible for the observed bioactivities.

Drug Screening Assays, Antitumor↗

PubMed1988

The Forest (Conservation) Amendment Act, 1988 (No. 69 of 1988), 17 December 1988.

Major provisions of this Indian Act on Forest Conservation are summarized as follows: "New Clauses iii) and iv) have been inserted in Section 2a of the principal Act to provide that the leasing of forest land to private persons or any authority, corporation, agency, and any other organization not owned, managed, or controlled by the Government and clearing of trees which have grown naturally anywhere in any forest land for the purpose of using it for reforestation will require approval of the Central Government. (Section 2) The scope of the existing definition of 'non-forest purposes' has been expanded so as to include therein also cultivation of tea, coffee, spices, rubber, palms, oil-bearing plants, horticultural crops, and medicinal plants. (Section 2) New Sections 3a and 3b have been inserted in Section 3 of the principal Act. Section 3a provides that anyone who contravenes any of the provisions of Section 2 shall be punishable with simple imprisonment for a period up to 15 days. Section 3b provides that if any offence has been committed under this Act by any Government department or by any authority, then the head of the department or every person directly responsible for the conduct of the authority, as the case may be, shall be deemed to be guilty of the offence and shall be liable to be punished."

Agriculture↗