How plants biosynthesize the constituents of an essential oil. Oil glands (trichomes): appearance and functions. Why plants make essential oils: protection from disease, pollinator attraction, herbivore deterrent, plant-to-plant signaling. Methods of extraction: distillation, fractional distillation, CO2 extraction, solvent extraction (absolutes). Seminar attendees will gain valuable insight into why essential oils exist, how they are formed in the plant, changes that take place during distillation, and the differences between the various extraction processes, especially essential oils and CO2 extracts.
Essential Oils II: Constituent Chemistry
November 9, 2011 – 3:00pm PST – $39
The 14 classes of essential oil constituent, what a typical essential oil contains, how it is analyzed. Chemotypes, botanical species and environment: how these affect essential oil composition. Major constituents of common essential oils. The “functional group” hypothesis 20 years on: why we need to be wary of generalizations. Constituent chemistry and function: how they relate. Some important therapeutic and toxicologic properties of specific constituents. Seminar attendees will come away with a good basic understanding of essential oil constituents and their various functions.
Essential Oils III: Quality Issues
December 14, 2011 – 3:00pm PST – $39
The differences between an essential oil and a fragrance oil. The factors that determine essential oil quality. Contamination, adulteration, oxidation. How to find good quality essential oils. The various “grading” systems. Seminar attendees will acquire important guidelines on how to find good quality essential oils without over-paying, and will learn vital information about essential oil oxidation and antioxidants, and how to preserve the therapeutic integrity of an essential oil.
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