09/06/2021
Nature is complex. A single essential oil can contain dozens of constituents, each one of which, alone, has certain properties. How do we make sense of such complexity in nature? We often turn to patterns, to broad categories, just to give us a “rough idea” of what’s going on. And sometimes this works well enough. But what if our “rough idea” is more wrong than right? You may not realize it, but much of the information taught and written about concerning essential oils is based on a flawed idea called Functional Group Theory (FGT).
Essential oil constituents can be categorized according to their functional group, or chemical family. Such categories include alcohols, aldehydes, ketones, esters, phenols and more. For some 30 years, FGT has been used as a shortcut to understanding the actions of essential oils in the body.
Students learn the properties of each functional group, which essential oils are high in which molecules, and which functional group each molecule belongs to.
However, while this categorization makes sense in terms of chemistry, it turns out that it is not an accurate way to predict or describe the therapeutic properties of essential oil constituents. This is partly because FGT was originally based on a long-debunked hypothesis, and partly because current research shows that the properties of essential oil constituents do not fall into such neat categories.
If you want to learn more about the chemistry of essential oils, Dr. Joy Bowles and I have collaborated on a two part course called Aromatic Chemistry, enrolling now (link below).
You can also find more info on the Functional Group Theory by going to our blog.
https://tisserandinstitute.org/aromatic-chemistry/?utm_source=facebook&utm_medium=social&utm_campaign=chemistry2021&utm_content=fgt