@verticity The machines are not practical for home use, but you can often use dry ice and a mesh bag to create extracts. Though that might just be for a different herb
haha. Just wondering if perhaps that works for kava as well.
I don't think so because it would be hard to control the pressure that way. In other words, sure you can generate CO2 gas from dry ice, but you need a pressure chamber to create
supercritical CO2. Here's the phase diagram. (
https://en.wikipedia.org/wiki/Supercritical_carbon_dioxide )
To make supercritical CO2 you would need more than 100 atmospheres of pressure. Perhaps if you put dry ice in a sealed vessel, you could get a pressure greater than 1 bar, but I doubt 100 bars would be possible.
I know sometimes they use propane for that too, but that would obviously be incredibly dangerous. Also it wouldn't work well for kavalactones because KLs are actually semi-polar, probably substantially more polar than..."other things". KLs are more soluble in acetone than hexane, for example. That also implies that normal gas phase CO2, being non-polar, won't work very well.
