Camphene ginger

Hedychium coronarium Koen. Shan Ren (Ginger lily) (flower, rhizome) Sesquiterpenes, phenols, aldehyde, ketone, 1,8-cineole, camphene, beta-pinene.60-195 Stimulant. 

Camphene is a solid terpene. The dextro variety d-camphene is found in camphor, ginger and spike oils, and the levo variety, 1-camphene is in citrondla and valerian oil and in French and American turpentine. Bornylene does not occur in nature but has been prepared from the alcohol corresponding to it known as Borneol or Borneo camphor. This, as previously stated, may be prepared from pinene so that Bornylene itself may be made from pinene. Fenchene, also, is not found in nature but is obtained by reduction of fenchone a terpene ketone found in fennel oil and in Thuja oil. 

Composition Main constituent is zingiberene (>30%) followed by P-sesquiphelland-rene. (-H)-ar-curcumene, (E,E)-a-famesene and (-)-P-bisabolene are further important sesquiterpene hydrocarbons. a-Terpineol and citral (up to 9% in Australian ginger) result in the citrus note, whereas nerolidol is responsible for the woody-soapy taste [115]. Further constituents are camphene, limonene, phellandrene, bomeol, 1,8-cine-ole, linalool, a-bisabolene, oxygenated sesquiterpene hydrocarbons, etc. For recent analytical data see [116, 117, 118]. 

Oil of Ginger. Volatile oil from the rhizome Zrngi-ber officinale Roscoc, Zingiberaceae. Constit f-Zingiberene. d-camphene, phellandrene, bomeol, cineol, citral. 

Pinene forms with one molecule of dry hydrogen chloride, an addition-product, which is called artificial camphor (m.p. 125°) on account of the fact that it resembles camphor in appearance and odor. When this compound is heated with alcoholic potash or with a mixture of anhydrous sodium acetate and glacial acetic acid, hydrogen chloride is eliminated and camphene, an isomer of pinene, is formed. Camphene, the structure of which is not known, melts at 50° it is converted into camphor CioHieO (649) when oxidized with chromic acid. d-Camphene is found in ginger Z-camphene, in turpentine and in citronella and other essential oils. 

Camphene (Figure 6.4) occurs in nature as a constituent of several plant oils (turpentine, cypress, camphor, citronella, neroh, ginger, valerian oil). It can also... 

Camphor is a strongly scented solid that is isolated from evergreen trees in Asia. It is used as a spice as well as for medicinal purposes. Camphene is a minor constituent in many natural oils, such as pine oil and ginger oil. It is used in the preparation of fragrances. 

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