Tinkturenpresse

Dies ist eine alte Version des Dokuments!

---

Myrtaceae - tea tree, Teebaum

Native tree to eastern Australia with papery bark, linear leaves, and white flowers resembling bottle-brushes. [MPW]

http://en.wikipedia.org/wiki/Melaleuca_alternifolia

The essential oil, obtained from the foliage and terminal branchlets by steam distillation, is used as antimicrobial and expectorant. http://en.wikipedia.org/wiki/Tea_tree_oil
There are around 100 volatile compounds present, with different chemotypes have different chemical compositions. Terpinen-4-ol is the major component (30-48%), followed by γ-terpinene (10–28%) and α-terpinene (5–13%), 1,8-cineole (0–15%), α-terpinolene (1.5–5%), α-terpineol (1.5–8%), α-pinene (1–6%), p-cymene (0.5–8%), limonene (0.5-1.5%).
„The composition of Tea Tree Oil changes particularly in the presence of atmospheric oxygen but also when the oil is exposed to light and higher temperatures. The levels of α-terpinene, γ-terpinene and terpinolene decrease whereas the level of p-cymene increases up to tenfold. Oxidation processes lead to the formation of peroxides, endoperoxides (ascaridole) and epoxides.“
„Tea Tree Oil is a skin sensitiser. Skin sensitisation may also be enhanced by irritancy. Neat Tea Tree Oil and certain formulations at concentrations of 5% or more can induce skin and eye irritation. Based on clinical data, the current use levels of TTO are shown to induce contact allergy.“
„The following types of application for cosmetic products are given in the dossier: Skin - care products incl. post-waxing treatments up to 1.25%, Hair - care products up to 2.0%, Nail - care products up to 20%, Oral hygiene up to 0.2%, Personal hygiene including shaving products up to 2%. The undiluted might be used for other purposes as well i.e. aromatherapy. “
[SCCP/1155/08 Scientific Committee on Consumer Products SCCP OPINION ON Tea tree oil- European Union Commission Health and Consumer Union protection director general- adopted 18th plenary of 16 December 2008] http://ec.europa.eu/health/ph_risk/committees/04_sccp/docs/sccp_o_160.pdf

About the Australian tea tree industry: http://www.ifeat.org/wp-content/uploads/2012/10/Australian-tea-tree-industry-R-Davis.pdf