Oil of rose geranium

Found in oils of rose, geranium, citronella, palmarosa... 

Found in oils of rose, geranium, A major component of pine oils, citronella, eucalyptus and citriodora and present in small amounts in... 

Some examples of naturally occurring esters and amides are shown here. Isoamyl acetate gives ripe bananas their characteristic odor, and geranyl acetate is found in the oil of roses, geraniums, and many other flowers. N,N-Diethyl- i / -toluamide (DEBT ) is one of the best insect repellents known, and penicillin G is one of the antibiotics that revolutionized modem medicine. 

The alcohols occur in oil of rose and other flower essences. They have geranium or rose odors and are important perfume ingredients. The aldehydes have much stronger citruslike odors and occur as major or minor constituents in many essential oils, such as oil of citronella, oil of lemon, and so on. 

Gomes, P.B. Mata, V.G. Rodrigues, A.E. (2007). Production of rose geranium oil using supjercritical fluid extraction. The Journal of Supercritical Fluids, Vol.40, No.l, (February 2007), pp. 50-60, ISSN 0896-8446... 

Geraniol, as Its name Implies, occurs in oil of geranium but also constitutes about 50% of rose oil, the extract of rose petals. Farnesol, which occurs In the essential oils of rose and cyclamen, has a pleasing lily-of-the-valley odor. Both geraniol and farnesol are used in making perfumes. 

As would be expected with products of such diverse character, the methods employed for the preparation of essential oils vary considerably. Broadly speaking, however, the processes may be divided into three classes—(1) expression, used for orange, lemon, and linui oils (2) distillation, employed for otto of rose, geranium, sandalwood, and many other oils and (3) extraction, including cnfleuraije, by which the volatile oil from the flowers is either first absorbed by a neu-... 

Twenty-four years before its detection in nature PEA was first synthesized in 1876 (56) by reducing phenylacetaldehyde [122-78-1] with sodium amalgam. Then, in 1900, it was independently identified in otto of rose (57) and rose water (58). Subsequently, PEA has been identified in numerous flower oils such as ylang-ylang, narcissus, hyacinth, lily, neroH, and geranium as well as various other natural products like tea, tobacco, orange juice, beer, cigarette smoke, etc. 

This method has been teferted lo utider Otio of Rose, hut has hern more otiticallj studied hy Simmons- in releretice lo geranium oil. Simmons lias shown that the determination ot citrouellol lu the preseuce... 

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 last of these bodies announced as being alcoholic constituents of rose and geranium oils was reuniol, found in various geranium oils (BAunion, African, and Spanish) by A. Hesse. This had previously been announced as a probable chemical individual by Barbier, but he stated that he had not obtained it pure. Erdmann and Huth claimed that it was more or less pure rhodinol. 

There seems, however, to-day, to be overwhelming evidence that the French chemists were correct and that citronellol and rhodinol are two very similar, but chemically different, compounds, citronellol being represented by the formula (1) and rhodinol by formula (2). Considerable evidence of this is to be found in the work of Barbier and Locquin. Starting from the acetic esters of ordinary d-citronellol and rhodinol from oil of geranium or rose, they attached hydrogen chloride to the double bond, and obtained the same additive product according to the equations — ... 

I The three optical varieties of rhodinol have thus been obtained, namely, laevo-rhodinol, the natural constituent of rose and geranium oils dextro-rhodinol by conversion of dextro-citroneUol obtained by reduction of citronellal, and inactive rhodinol by the reduction of synthetic ethyl rhodinate. 

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. 

To 10 c.c. of the oil (otto of rose or rose-geranium oil) 10 c.c. of formic acid 100 per cent, (specific gravity 1 22) is added, and the mixture gently boiled under a reflux condenser for one hour. The mixture is cooled, 100 c.c. of water added, and the whole transferred to a separator. The aqueous layer is rejected, and the oil washed with successive quantities of water as in the acetylation process. The formylated oil is dried with anhydrous sodium sulphate, and about 2 grams neutralised and saponified with alcoholic potash in the usual manner. The percentage of citronellol is then calculated from the following formula —... 

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. 

The odor quality and strength of the two citronellol enantiomers were found to be different.The (35)(—)-enantiomer (Rhodinol) possesses a much finer rose odor than the (3i )(+)-enantiomer. (35)(-)-Citronellol has a sweat, peach-like flavor, while (3i )(- -)-citronellol has a bitter taste. (35 )(—)-Citronellol has been found in a number of geranium and rose oils. (3i )(+)-Citronellol occurs in the oils of Ceylon and Java citronella, Cymhopogon winttrianusff Boronia citriodora. Eucalyptus citriodoraff geranium, Spanish verbena and others. Because of the... 

The common names of these intermediates derive from the sources from which they were first isolated. Geraniol, a component of rose oil, has the aroma of geraniums, and farnesol is an aromatic compound found in the flowers of the Farnese acacia tree. Many natural... 

Savon la Hose.—Rose soap is made from a mixture of olive oil soap, sixty pounds and curd soap, forty pounds colored with one pound of finely bolted vermilion. The perfume consisting of attars of rose, six ounces otters of santal and geranium, each one ounce and tincture of musk, eight ounces must be added to the cold soap in meal, and incorporated by kneading. The oil soap may be replaced by curd soap, but the quality of the rose soap will not then be so fine. 

Lmalool [78-70-6] - [PERFUMES] (Vol 18) - [TERPENOIDS] (Vol 23) -in anise star oil [OILS, ESSENTIAL] (Vol 17) -aroma chemical [PERFUMES] (Vol 18) -in Bergamot oil [OILS, ESSENTIAL] (Vol 17) -in caraway oil [OILS, ESSENTIAL] (Vol 17) -m Geranium Bourbon oil [OILS, ESSENTIAL] (Vol 17) -in jasmin oil [OILS, ESSENTIAL] (Vol 17) -in lavender [OILS, ESSENTIAL] (Vol 17) -in lavender [OILS, ESSENTIAL] (Vol 17) -in lime oil [OILS, ESSENTIAL] (Vol 17) -odor of [FLAVORCHARACTERIZATION] (Vol 11) -in oilbanum [OILS, ESSENTIAL] (Vol 17) -in orange oil [OILS, ESSENTIAL] (Vol 17) -m osmanthus flowers [OILS, ESSENTIAL] (Vol 17) -in otto of rose [OILS, ESSENTIAL] (Vol 17) -in sweet basil oil [OILS, ESSENTIAL] (Vol 17) -in wine [WINE] (Supplement)... 

In special cases genuine oils are adulterated with secondary products from the treatment of certain oils, as, for instance, the terpenes of the lemon for adulterating acid fruit oils (q.v.), or oils of high value are treated with others of similar odour but of much lower price (geranium oil being added to rose oil or citronella oil to melissa oil). 

As the rose essential and absolute oils are some of the most expensive oils in the market, they are likely to be adulterated. True essential oils may be diluted by the addition of chemicals such as phenylethyl alcohol, diethyl phthalate (DEP), citronellol and geraniol and with fractions from other essential oils such as geranium. The absolute may be adulterated with synthetic fractions of oils such as Peru balsam and clove bud absolute. 

Examples of monoterpenes include the linear aldehyde citral, which is found in many essential oils, and the (cis) alcohol geraniol, a major component of oil of geranium. Cyclic monoterpenes include limonene, menthol, pinene, camphor, and carvone, major components of lemon oil, mint oil, turpentine, camphor oil, and caraway oil, respectively. Sesquiterpenes include farnesol, a component of rose oil, and bisabolene, a component of Bisabol myrrh. The diterpenes include phytol, a component of chlorophyll, and vita-... 

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