For over several thousands of years, humans have been employing essential oils for therapeutic purposes as well as sustaining good health. In effect, the ancient Egyptians extensively used essential oils. Currently, essential oils are used extensively in lotions meant for external use, aromatherapy, comforting baths and in a great assortment of herbal medications.
Any attempt to define essential oils accurately as well as in a few words is really difficult. For all practical purposes, one may possibly depict essential oils in the form of natural odoriferous (having potent fragrance) compounds that are present in or separated from plant materials. Generally, essential oils are in liquid form (in some exceptional cases they may be in semi-solid form, but seldom found in solid form), are not water soluble and volatile when they come in contact with steam. Essential oils evaporate at dissimilar paces under normal atmospheric pressure and at room temperature. Therefore, they are alternately referred to as 'ethereal' or 'volatile' oils too. In fact, the general term 'essential' is derived from the Latin expression 'essentia' - the 'quinta essentia', which the ancient alchemists regarded to be the attribute as well as the most vital element of all natural substances.
The comparatively rapid pace of evaporation of the essential oils and their distinct smell, apart from the chemical make-up of these oils, make them basically different from the stable, fatty oils. Among the several thousands of plant species identified by humans so far, comparatively a very little number of them provide essential oils. The essential oils actually develop either all over the complete plant or only in particular parts. A number of essential oils are found only in the roots, or the timber, bark, leaves, flowers or the fruits of the plants. In a number of instances different parts of the same plant may possibly enclose essential oils of dissimilar composition.
Over the years, numerous theories have been put forward to elucidate the essential oils' biochemistry; nevertheless, none of them has been established as being totally acceptable. Possibly, the essential oils are just purging products in the life progression of the plants. If this is the case, they are similar to specific gums, resins and balsams; however, a number of essential oils definitely seem to be the forerunners of this type of exudation products.
It may be noted that as far as their physicochemical attributes are concerned, the essential oils greatly differ and their chemical composition is generally complicated. Some of them are near exclusively made up of only one element, for instance, the essential oils obtained from sweet birch (methyl salicylate), wintergreen and cassia oil (cinnamaldehyde). However, majority of the essential oils enclose a greater number of ingredients, sometimes 50 or even more - which is something not atypical. These individual constituents are members of numerous categories of organic compounds, especially the sesquiterpenes and terpenes, and their esters, alcohols, ketones, aldehydes, oxides and lactones among other things. A number of these essential oils are open chained, while several of them are cyclic and bicyclic. Some of them also belong to the aromatic series, for instance, benzyl acetate and phenylethyl alcohol, and findings of recent studies have revealed that the azulenes appear to have a vital function in the essential oils.
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An analysis of the essential oils can be achieved by conventional physiochemical examinations, for instance, finding out the specific gravity, solubility in alcohol, optical rotation, boiling point and others. In addition, it is also possible to verify the free acids, esters, alcohols, ketones, aldehydes, phenols and phenol ethers through conventional tests. Recently, scientists have made vast advancement in examining essential oils, especially in isolating as well as identifying individual components, by means of introducing state-of-the-art chromatographic and spectroscopic methods, for instance infrared and ultraviolet (UV) absorption, nuclear magnetic resonance, gas and thin layer chromatography as well as mass spectrometry. As the smell will continue to be a vital decisive factor always, the assay of an essential oil will not be absolute without cautious organoleptic examinations. However, it requires substantial experience on the part of the examiner to undertake the organoleptic tests of essential oils.
Majority of the essential oils are actually isolated from different parts of plants, for example, the leaves, stem, wood, roots, flowers and bark, by means of a process known as hydrodistillation - partially in primordial, changeable stills - and partially in contemporary stationary distilleries. Only in the instance of citrus oils, which are present in the peel or coverings of the citrus fruits, essential oils are isolated by means of expressing the peel mechanically. Specific varieties of flowers are actually extremely fragile and, hence, the essential oils enclosed by them are unable to endure the hydrodistillation process, neither are they suitable for expression. Hence, the essential oils contained by such flowers need to be isolated by means of extraction using volatile solvents (generally, extremely refined petroleum ether) to yield the purported natural flower oils in a real, solid variety than can be converted into complete, liquid form. Such flowers include jasmine, acacia, tuberose, mimosa and the like. It is possible to process a number of flowers, including bitter orange blooms and rose, either by means of hydrodistillation or through solvent extraction.
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The amount of essential oil yielded by a plant actually varies depending on the species. In majority of instances, the yield varies from approximately 0.2 per cent to 2.0 per cent. However, oil rose also known as otto of rose and clover oil are two extreme examples in this case. While rose yields only 0.025 per cent of essential oil, clover yields as high as 17.0 per cent of clover oil.
It may be noted that several regions of the world produce essential oils, especially those having warm as well as temperate climatic conditions.
Not more than a hundred types of essential oils have already achieved genuine commercial significance. These essential oils are extensively used to add fragrance as well as essence to nearly a limitless assortment of consumer items, including food products, chewing gums, confectionery, pharmaceutical and dental formulations, alcoholic as well as non-alcoholic drinks, soaps, room sprays, detergents, insecticides, perfumes and cosmetics. They are also employed to camouflage the odour in artificial products, for instance rubber goods, leathers and plastics.
It has been proved that the essential oils offer numerous health benefits. They are obtained from the leaves, flowers, stems, barks as well as the roots of plants by means of distillation. Essential oils may have a direct or indirect effect on our body's physiological system. For instance, taking a few drops of peppermint oil by mouth may promote digestion. Similarly, breathing in lavender oil causes a soothing impact.
A number of essential oils may be taken orally to aid in stimulating digestion, while several other essential oils are applied topically to alleviate inflammation and provide relief from pain. Essential oils having antiseptic as well as anti-fungal attributes are also employed to sterilize and cure scrapes, cuts as well as other injuries and skin complaints.
Aromatherapy is one area where essential oils are employed extensively. The use of essential oils in aromatherapy is not only very popular, but has also proved to be useful in curing physical, emotional as well as aesthetic conditions. A number of essential oils have a tranquilizing and also invigorating effect on our nervous system and they can either raise or lower the blood pressure and regularize secretion of hormones in some way.
In addition, inhaling the steam of essential oils is helpful in the treatment of respiratory problems, for instance, a cold or influenza. The essential oils that are effectual for inhaling comprise eucalyptus, angelica, cypress, sage, myrtle, lemon grass, lemon, ocean pine, mountain pine, chamomile, juniper, niaouli, thyme, cedar and hyssop. It may be noted that steam inhalation of essential oil is usually not suggested for people suffering from asthma.
Employing essential oils for lymphatic massage is actually a typical aromatherapy treatment that activates the healing process of the body by means of inciting the blood circulation as well as lymph fluid. It needs to be noted cautiously that nearly all essential oils ought to be diluted prior to applying them directly to the skin, since direct application of essential oils may result in acute exasperation.
Normally, essential oils are diluted in the ratio of 15 drops of the oil to one ounce (approximately 28.35 grams) of carrier oil. It may be noted that carrier oil is basically any vegetable oil that is obtained by using the compress method on the fatty part of the seeds, kernels or nuts, for instance, wheat germ, almond, coconut, hazelnut, olive oil, jojoba and aloe vera oil.
There are a number of essential oils that alleviate the taut muscles and augment blood circulation. Such essential oils comprise lemon grass, lemon, rosemary, lemon verbena, juniper, lavender, birch, cinnamon and Swiss pine oils. On the other hand, essential oils that have a calming effect include petitgrain, Roman chamomile, rose, bergamot, lavender, mimosa, neroli, geranium, sandalwood, orange, cedar, rosewood, and tangerine. When you employ the facial and body oils every day, it helps to nurture the skin. Essential oils that are used for deep body massage comprise rose, jasmine, sandalwood, orange, cinnamon, ylang-ylang and iris.
Adding a few drops of essential oils to your bath will help to promote relaxation as well as lift your spirits. You may add five to ten drops of your preferred essential oil to the bath water and enjoy the benefits. Nevertheless, it is advisable that people having sensitive skin ought to dilute the essential oil by adding base oil. Ensure that you wipe the tub properly after the bath, since essential oils may leave stains on some type of tubs.
Having a comforting foot bath using essential oils is a wonderful experience. Add for drops of rosemary, peppermint and thyme oils to a big basin filled with water and soak your feet in it for some minutes to bring back life to your tired feet. In order to get some extra comfort, after you have soaked your feet, massage some lavender oil on them.
In addition, essential oils are useful in curing insomnia (sleeplessness) or to bring on a peaceful sleep all through the night. For this, you may add a few drops of the essential oil of your preference to perfume your pillow.
Last, but not the least important, handkerchiefs are an extremely handy means to utilize essential oils. Inhaling a handkerchief perfumed by adding a few drops of your favourite essential oil will help to alleviate the tension and pressure that build up all through the day. Adding only two or three drops of the essential oil to a handkerchief will be enough to serve the purpose.
Several types of synthetic or man-made oils are also available and they are generally much inexpensive compared to their natural equivalents. However, such synthetically prepared oils never possess the same curative attributes or results that are present in the natural essential oils. In addition, always bear in mind that essential oils are completely dissimilar to the 'scented' or 'perfume' oils - which are also known as fragrance oils.
It may be noted that perfume or fragrance oils enclose elements as well as chemicals that are not always obtained from plant sources. Very much similar to the man-made oils, fragrance or perfume oils also do not possess any remedial or healing attributes. This is the primary reason why it is always very important to carefully read the labels on all products that you plan to employ for aromatherapy.
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