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--- eucalyptus_dives_schauer [2025/12/01 09:48] – andreas
+++ eucalyptus_dives_schauer [2025/12/01 10:54] (aktuell) – andreas
@@ Zeile 1: / Zeile 1: @@
 Eucalyptus dives Schauer - Myrtaceae - broad-leaf peppermint gum, **Breitblättriger Pfefferminz-Eucalyptus**
-Tree, up to 20m high, native to Australia (New South Wales, Victoria); bark persistent on trunk and larger branches, grey to grey-brown, shortly fibrous (`peppermint'); young leaves ovate, glaucous; adult leaves lanceolate to broad-lanceolate, 7-15cm long.\\
+Tree, up to 20m high, native to Australia (New South Wales, Victoria), cultiveted elsewhere (South Africa); bark persistent on trunk and larger branches, grey to grey-brown, shortly fibrous (`peppermint'); young leaves ovate, glaucous; adult leaves lanceolate to broad-lanceolate, 7-15cm long. \\
 [[http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Eucalyptus~dives|"Eucalyptus dives Schauer". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust, Sydney Australia.]] Retrieved 2017-11-24
 The essential oil of E.dives contains (-)- α-phellandrene in a state of approximate optical purity. \\
 [Smith, Henry George, Peter George Carter, and John Read. "CXII.-Researches on phellandrenes. Part II." Journal of the Chemical Society, Transactions 125 (1924): 930-940]
+"In the commercial exploitation of Eucalyptus dives oil... for the separation of piperitone, large quantities of phellandrene are obtained as a by-product. This substance possesses valuable solvent properties and finds use in the preparation of a number of proprietary liquids for solvent purposes, and has been carefully refined by the fine chemical manufacturers of London when the pine odour developed through purification has been found
+suitable for certain classes of soap perfumes." \\
+[Penfold, Arthur Ramon. "The chemistry of eucalyptus oils." Environment: a magazine of science 2.1 (1934)] [[https://openjournals.library.sydney.edu.au/ENVI/article/view/8593/8667|PDF]]
+Major components of the essential oils of chemical varieties of Eucalyptus dives ("Type", "Var. A", "Var. B", and "Var. C") of //Eucalyptus dives// were piperitone, 1.8-cineole, and α-phellandrene. \\
+[Hellyer, R. O., et al. "Chemical variation within Eucalyptus dives." Phytochemistry 8.8 (1969): 1513-1514]
 |{{:piperitone.jpg|}} \\ piperitone |{{:alpha_phellandrene.jpg| α-phellandrene }} \\ α-phellandrene | {{:cymene.jpg|p-cymene}} \\ cymene |{{:terpinen4ol.jpg|terpinen-4-ol}} \\ terpinen-4-ol |
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 The essential oil of E.dives leaves was dominanted by compounds like piperitone (40.5%), α-phellandrene (17.4%), p-cymene (8.5%) and terpinen-4-ol (4.7%). \\
 [Gilles, Martin, et al. "Chemical composition and antimicrobial properties of essential oils of three Australian Eucalyptus species." Food Chemistry 119.2 (2010): 731-737]
+"The term industrial oil is commonly used to describe the use of the EOs as raw materials for
+the isolation of their chemical constituents. The industrial EOs are characterized by high levels of
+phellandrene and piperitone, and mainly obtained from E. dives species." \\
+[Barbosa, Luiz Claudio Almeida, Claudinei Andrade Filomeno, and Robson Ricardo Teixeira. "Chemical variability and biological activities of Eucalyptus spp. essential oils." Molecules 21.12 (2016): 1671] [[https://www.mdpi.com/1420-3049/21/12/1671/pdf?version=1481109353|PDF]] see also: \\
+"Prospects appear to be poorest for the piperitone-containing oil from E.dives, a so-called industrial oil, of which South Africa is the world's largest supplier." [Coppen, J. J. W., and G. A. Hone. "Eucalyptus oils: a review of production and markets (NRI Bulletin 56)." (1992)] [[https://gala.gre.ac.uk/id/eprint/11084/1/Doc-0146.pdf|PDF]]
 {{:eucalyptus_div.jpg|Eucalyptus dives}} \\