I'd use iso, i just figure that since meoh is ~35% more polar (33 dielectric constant vs. iso's 18 ) it would work better w/ less solvent used. Water, for comparison has a DE of 80. Gooey isn't an issue for me. Slimy tea is, and thats why I'd rather not use water at all.
But you could prob get rid of some of the alcohol pulled goo if you dissolved the meoh/etoh/iso resin in hot water, filtered and evaped the water. Tars, fats, oils, etc should not be soluble while the alkaloid salts are very soluble. Might just add that step to see how it works.
Can anyone speak as to the effectiveness of wet alcohol resin extractions, and what the ratio it was, did you notice swelling at X% water to alcohol, etc? Ideally if you could get away with an amount of water in the alcohol with out swelling perhaps it would make the mixed solvent more polar and pull the salts better, perhaps with less goo as well.
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