Good question!
As I understand it, most essential oils are extracted using steam.
A great way to extract aromatics, terpenes, flavors, etc.

There are caveats:

"The downside of distillation is the fact that heat is used in this extraction method, which makes it totally unacceptable for use on very fragile material, or where the oils are extracted with great difficulty.

When this method of extraction is applied, great care has to be taken with the temperature and length of exposure of the heat to prevent damage to the oils."

I also wonder about de-caboxylization and oxidation with the heat and air involved.

It's time someone tries it and posts the results.

I can not answer your question, so I'll just sit here quietly and wait for someone who can.

Um, wait, that could take a long time.
Mo' betta I get to googling and see if this has been answered elsewhere.

I'll get back to ya.

Aloha,
Weezard