By E. Joy Bowles
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Additional info for Chemistry Aromatherapeutic Oils
Fournier, J. Habib, A. Reguigui, F. Safta, S. Guetari and R. Chemli (1989), ‘Etude de divers echantillons d’huile essentielle de Romarin de Tunisie’, Plantes Medicinales et Phytotherapie 23, pp. 180–5. of different species. The odour of each batch should be carefully assessed to gauge the proportions of phenols it contains. 3 illustrates the differences in odour and therapeutic properties between the different chemotypes. Another example of chemical variation is between Geranium (Pelargonium graveolens L’Herit.
It can then be absorbed by plant roots in the form of watersoluble nitrogen compounds. The chemical reaction for photosynthesis can be written as follows, showing glucose as the final product. Light and chlorophyll are required before the reaction can proceed: Light and chlorophyll 6CO2 + 6H2O C6H12O6 + 6O2 Glucose might be the end product of photosynthesis, but the reaction initially forms more simple sugars. These simple sugars are then changed into many different types of molecules, including glucose.
They noted that clary sage (Salvia sclarea) plants require a dry chalky soil for maximum essential oil production, yielding very little oil if the soil is too rich. Lemon balm (Melissa officinalis) plants require deep soil and just the right amount of water. 2 Harvesting time As all farmers know, there is an optimal time for harvesting crops. The same goes for essential oil producing plants. 2 * G. Vernin, J. Metzger, D. Fraisse and C. Sharf (1983), ‘Étude des huiles essentielles CG-SM Banque SPECMA: Essences de Geranium (Bourbon)’, Parfum.