Geranium essential oil

The result is interesting because topical capsaicin cream (one of the standard treatments for this condition) relieves pain gradually over 2 weeks, while the essential oil acted within minutes. Geranium essential oil applied cutaneously in animal studies has suppressed cellular in amma-tion and neutrophil accumulation in in ammatory sites (Maruyama et al, 2006), but postherpetic neuralgia normally occurs after the in ammation has subsided. One of the main components of the... 

Z)- and pyranoid 3R,6R)- Z)- and (3S,6S)-(Z)-linalool oxides (8-32) are odorants of jasmine tea, aromatic wines, elderberry bush flowers and linden honey. In grapes, (-)-(Z)-rose oxide from (-)-citroneUol is analogously produced. Rose oxide is also a component of rose and geranium essential oils (8-32). Nerol oxide in rose oil is a racemate. 

A. Gallardo et al.. Insecticidal activity of individual and mixed monoterpenoids of geranium essential oil agamst Pediculus humanus capitis (Phthiraptera Pediculidae). J. Med Entomol. 49 332, 2012. 

Many essential oils are used for flavoting and perfumery, eg, neroH, geranium, and ylang (see Oils, essential). The whole fmit, cmshed fmit, and puree may be used directly in foods, ice cream, cakes, and confections. Fmit juices, concentrates, and essences are more commonly employed (see Fruit juices). 

P Kreis and A. Mosandl, Chfral compounds of essential oils. Part XIII. Simultaneous chirality evaluation of geranium oil constituents , Flav. Fragr. 7. 8 161 -168 (1992). 

The progressive development of the geraniol compounds in essential oils has been principally studied in the case of oil of geranium. 

Geraniol, Cj(,Hj-OH, is a constituent of many essential oils, both in the free state and in the form of esters. It is present to a very large extent in palmarosa oil, ginger-grass oil, and citronella oil, principally in the free state, and in geranium oil, to some extent in the free state, but principally in the form of esters. It is also an important constituent of otto of rose, and is present in numerous other oils belonging to the most distantly related groups. 

Linalol is found very widely distributed in essential oils. It forms the principal constituent, in the free state, of oil of linaloe, and the chief odorous constituent, in the form of esters, in bergamot and lavender oils. It is also found in ylang-ylang, rose, champaca leaf, cinnamon, petit-grain, spike, geranium, lemon, spearmint, and numerous. other essential oils. 

The esters belonging to the geraniol series of alcohols are absolutely indispensable in the manufacture of artificial perfumes. When it is remembered that these esters are present in such oils as bergamot, rose, geranium, lavender, petit-grain, neroli, and numerous other sweetsmelling essential oils, it will readily be seen how useful they are in building up similar perfumes artificially. 

Dimethyl sulphide, (CH3)2S, is a foul-smelling liquid, found in minute quantity in the essential oils of peppermint and geranium. It boils at 37°. 

As the free acids present in essential oils consist in the main of acetic acid, they are, when necessary, calculated in terms of acetic acid in the same way the esters are conventionally calculated from the alkali required for their hydrolysis, in terms of the principal ester present, for example, linalyl acetate in the case of lavender and bergamot oUs, and geranyl tiglate in the case of geranium oil. 

The Detection of Artificial Esters in Essential Oils.—The custom of valuing certain essential oils, such as lavender, bergamot, geranium, petit-grain, etc., by the determination of their ester-content, has led to the use of scientific adulterants in the form of artificial esters which have been deliberately employed for the purpose of misleading the analyst. Of course, the ester determination is not a true criterion of value, as most of this class of oUs owe their perfume value to various other bodies as well. The first compounds of this nature employed for adulteration were ethyl succinate and ethyl oxalate. For the detection of these in lavender oil the foUowing test was proposed by Guildemeister and Hoffman —... 

The natural esters present in essential oils are usually those of acetic, butyric, and valerianic acids, and in the case of geranium oil, tiglate acid. 

Naves, Y. R. Essential oil of zdravets (geranium macrorhirum L.). Perfum. 

Tasev T, Toleva P, Balabanova V. (1969). [Neurophysical effect of Bulgarian essential oils from rose, lavender, and geranium]. Folia Med (Plovdiv). 11(5) 307-17. 

C12H22O2, Mr 198.30, Z PlOl.SkPa 240 °C, d 0.8901, Wp 1.4515, occurs in many essential oils either as one of its optical isomers or as the racemate. The odor of racemic citronellyl acetate differs little from that of the optical isomers. ( )-Citronellyl acetate is a liquid with a fresh-fruity rose odor. It is often used as a fragrance, for example, for rose, lavender, and geranium notes as well as for eau de cologne with citrus nuances. Since it is relatively stable to alkali, it can be used in soaps and detergents. Citrus flavors acquire speciflc character through the addition of citronellyl acetate it is also used to round off other fruit flavors. 

A few alkyl- and aralkyl-substituted aromatic hydrocarbons find limited use in perfumery. Examples include /i-cymene [99-87-6], which is a component of many essential oils and when pure has a weak, citrus odor, as well as diphenylmethane [101-81-5] which has an odor like geranium ... 

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