Jasmin, one of the materials for Absolutes |
Unfortunately, the aromatic essences of some plants cannot survive the heat and hydration of distillation. Extracting them as absolutes is the only practical way to obtain them at this time. The solvents are usually ethanol, methanol, benzene, or hexane. All but the first of these are toxic chemicals. Absolutes are sometimes called "essences". Absolutes usually contain a wider range of molecular sizes than essential oils, including some fatty oils such as lauric acid.
Among the most popular absolutes are Jasmine and Neroli, extracted from jasmine flowers and orange blossoms respectively. Onycha oil is another absolute oil, popular since the Old Testament days of Moses (Exodus 30:34). It has powerful anti-microbial properties and has been used as an antiseptic (called tincture of benzoin) in hospitals for more than 200 years, to the present.
(The foregoing information was extracted from Margarete de Gaston's Scent Pro newsletter, February -08 issue.)
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