Hi all, long time lurker, first time poster. I post a bit over at Shroomery, too, but my interests have started to move on to DMT a bit more now.
Just adding that I attempted an STB extraction using lye and shellite on Acacia longifolia var. sophorae, which I believe is synonymous with Acacia sophorae now. I used 100g of bark from a branch. It was my first extraction but I am almost certain I did everything correctly, but freeze precipitation in a -25c freezer only created some tiny floating specks that dissolved as soon as they left the shellite; I'm guessing this was ice that somehow got in. The shellite did go cloudy when I tried evaping the second pull, but on complete evaporation there was nothing but a tiny, tiny, tinyyyyy film of clear sludge at the bottom of my jar which could've been anything. Not enough to bioassay, anyway. I am attempting one final pull on the bark and I have added a lot more lye to my base. I will also try heating it up and agitating more vigorously.
I will be attempting another STB extraction on A. cyclops in the near future and will update with results; any advice is welcome! If cyclops fails me I'll find a way to drive 3-4 hours out of Adelaide and respectfully harvest some burkitti bark.
edit: and I must add, nen, this thread is absolutely invaluable! I have spent hours and hours reading through it all and I am amazed at the effort you have put into it. We are all in your debt
edit2: nearly forgot, I've also done an extraction on 70g of A. ligulata bark. That was my first ever extraction and I used it as practice for the A. sophorae, but I did everything exactly the same except I didn't heat the solution at all, and I only did 1 pull. Nothing precipitated after 6 hours in the freezer so I evap'd it down and nothing at all was left. I definitely didn't expect it to be active, but can anyone tell me if STB teks are unsuitable for acacias? I've read that most people do a/b on them, but I'm not sure what difference it would make, especially with well ground bark? Do the cell walls hold the goods in a different way for acacias, or...?
Also I've just started an extraction on 30g of A. sophorae phyllodes that I got when I got the bark, will update with results if there's any (doubtful).