Eucalyptus, oils tables

Unfortunately, enantiomeric purities and total percentages of a-pinene, ]3-pinene, limonene and a-terpineol from tea tree oils more or less overlap with those of Eucalyptus oils (Table 17.3). Only enantiomeric purities and total percentages of terpinen-4-ol and a-phellandrene are significantly different, when Melaleuca and Eucalyptus oils are compared with regard to authenticity assessment [45]. 

By volume (in tons) the most important essential oils used for flavours are the citrus oils (see 3.2.2.2), the mint oils, eucalyptus oils, clove oils and to a lesser extent some spice oils (Table 3.25). 

As it is shoTftfn in Table I all above mentioned mechanical properties of rectal suppositories are remarkably improved, i hen their active ingredients /menthol, camphor, eucalyptus oil/ are present as ft-cyclodextrin complexes ... 

With sodium ethyl xanthate as collector, the frothing capabilities of various synthesized dodecyl phenyl polypropylene ether alcohol frothers from dode-cylphenol and epoxy ethane in the flotation of lead zinc ore of Australia Broken Hill are listed in Table 3.2. As shown in Table 3.2, the frothing capability of dodecyl phenyl polypropylene ether alcohol is as same as that of eucalyptus oil. 

The botanical insect repellents, cinnamon oil, lemon eucalyptus oil, sandalwood oil, and turmeric oil, were evaluated in the laboratory against fourth instars of Aedes aegypti, Aedes albop-ictus, and Culex pipiens complex. The sandalwood oil was the most effective larvicide, killing the larvae of all three species of mosquitoes in a relatively short time. Twenty-one commercial insect repellents shown in Table 21.3 including 12 natural, 6 deet-based, and 3 synthetic repellent products were evaluated as larvicides against the larvae of Aedes albopictus in the laboratory. Ten of the 12 botanical products at 0.1% concentration provided 57%-100% mortality at 24 hours posttreatment. " ... 

The essential oil of Saro is a yellow and mobile liquid with a slight and characteristic fresh and eucalyptus aroma. The oil is less dense than water (0.9452), and the refractive index was 1.4636 (Table 1). The essential oil is characterized by high levels of 1,8-cineole (40-55%), with minor amounts of a-pinene (4-7%), p-pinene (5-8%) and linalool (4-9%). The Saro EO also contained at lower levels terpenyl acetate (1-4%), a-terpineol (2-5%) and terpinen-4-ol (2-6%) (Table 11). 

Other common components of essential oils are the monoterpenic monocycHc alcohols a-terpineol (found in hlac, marjoram, cardamom, star anise oil and other oils), terpinen-4-ol (4-terpineol), also known as 4-carvomenthenol, is a component of the essential oils of pine (Pinus spp., Pinaceae), eucalyptus Eucalyptus spp. Myrtaceae), marjoram and thyme (see Table 8.32, later). It is also the main component of the antiseptic essential oil of the Australian tree Melaleuca alternifolia (Myrtaceae), known as tea tree oil. It often occurs as a racemate. (- -)-Terpinen-4-ol occurs at about... 

An example of terpenic 1,2-epoxides is -caryophyllene oxide, also known as (-)-epoxycaryophyllene (8-31), which occurs in many essential oils. An example of terpenic 1,4-epoxides is the so-called (-l-)-dill ether, (3J ,4S,8S)-3,9-epoxy-p-menth-l-ene (8-31), which is a typical component of the essential oil of caraway (30%) and dill. An example of unsaturated 1,4-epoxides is (-l-)-menthofuran (8-31), the metabolite of ketone (-l-)-pulegone. Both compounds are components of peppermint oil (see Table 8.32, later) and are hepatotoxic. Monoterpenoid compound (- -)-l,8-cineole (also known as limonene oxide, eucalyptol or 1,8-epoxy-p-menthane 8-31) is an example of more complex structures. It is present in essential oils of many types of spices, and higher quantities are found in the essential oil of trees of the genus Eucalyptus (Myrtaceae). Trivial and systematic names of selected ethers are given in Table 8.8. 

Despite their overall high abundance, the sesquiterpene hydrocarbons ( )-caryophyllene and )S-elemene were not detected by GCO and AEDA. This indicates that these compounds may play either no role or only a minor role in the overall aroma of O. sanctum. Results of AEDA (Table 1) indicate that eugenol cloves) is the predominant odorant in the essential oil, followed by jS-damascenone (floral, applesauce), 2-isopropyl-3-methoxypyr-azine (earthy, potato), and 1,8-cineol (minty, eucalyptus). The fact that eugenol and 1,8-cineol are key aroma components is not surprising and is supported by previous studies [1-9]. However, jS-damascenone and 2-isopropyl-3-methoxypyrazine had not been previously reported as components of O. sanctum. The AEDA procedure was conducted on the fresh herb to determine whether these latter components are indeed natural constituents of the herb or whether they are generated during the production of the... 

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