By E. Joy Bowles
Read or Download Chemistry Aromatherapeutic Oils PDF
Similar clinical chemistry books
Up to date and revised to mirror advances made lately, this vintage reference offers easy and utilized points of nutrition emulsions from liquid crystallization and organization phenomena to their impression on technical processes;providing incisive insurance of subject matters, together with protein-bound emulsions, hydration forces, emulsion balance, and oil/water interfaces.
Swift advancements in biotechnology create a requirement for functional, up to date experiences written through and for specialists in undefined. This compact guide presents all correct updated details on very important bioseparation and bioprocessing innovations which are actively utilized within the biotechnology industries.
This version is absolutely revised to mirror the present nation off the sphere. * major additions contain ultramicroelectrodes, transformed electrodes, and scanning probe tools. * Many chapters were transformed and more suitable, together with electrode kinetics, voltammetric equipment, and mechanisms of coupled chemical reactions.
- Handbook of Fiber Chemistry
- Lab-on-Chips for Cellomics: Micro and Nanotechnologies for Life Science
- Organic Synthesis Workbook III
- Preparative Enantioselective Chromatography
- Frontiers of Molecular Spectroscopy
- Modern NMR Spectroscopy in Education
Extra info for Chemistry Aromatherapeutic Oils
16 • • THE CHEMISTRY OF AROMATHERAPEUTIC OILS Functional group names A functional group is a chemical entity that gives a molecule its particular characteristics, or its ‘function’. Functional groups can affect the odour, solubility, toxicity and therapeutic properties of molecules. A number of essential oil molecules have one or more functional groups attached to the carbon skeleton of the molecule. 4 summarises the functional groups found in essential oil molecules. Chapter 4 considers the research literature about the therapeutic properties of molecules with different types of functional groups.
Due to the size of oxygen atoms and the way their electrons are arranged, oxygen atoms are strongly ‘electronegative’. Electronegativity is the relative ability of an atom to attract electrons towards its nucleus. 1 • 43 Polarisation of charge in a water molecule slight negative O H slight positive H slight positive bonds are drawn more closely towards the oxygen atom, rather than being equally shared between the two atoms. Other types of highly electronegative atoms are fluorine, nitrogen and chlorine.
1998) examined the ratio and type of constituents produced by jasmine over a 24-hour cycle. Oil from flowers harvested in the morning contained the preferred combination of 38 • • THE CHEMISTRY OF AROMATHERAPEUTIC OILS linalool, benzyl alcohol, cis-jasmone and indole, whereas those harvested in the evening contained higher levels of eugenol, benzyl benzoate and methyl salicylate. 5 A brief overview of the essential oil industry Over 3000 plant species produce essential oils, but only about 300 of these are available commercially.