I think the order you added your material played a larger issue... Take your plant material and add it to the alkaline NaOH solution. Add enough water that you can swirl that plant material and it doesn't just form a mass.
I usually leave this in the strong lye solution for a day before added the xylene to begin pulling.... Since you have an Ultrasonic you can probably just leave the lye cactus solution for say an hour before adding the xylene.
After adding the xylene I always shake the two layers but most suggest just swirling... At this point I'd suggest adding salt until saturation. This works for two purposes to change ionic strength and prevents/reduces emulsions by making a higher polarity thus better better separation with the solvent.
IF you still have an emulsion I'd suggest adding more solvent... I think think an ultrasonic bath of the solvent and lye solution is a good idea compared to just shaking the two? IDK but you want the most contact of the two.
EDIT: Are you sure you have the correct cactus materiel?
I usually leave this in the strong lye solution for a day before added the xylene to begin pulling.... Since you have an Ultrasonic you can probably just leave the lye cactus solution for say an hour before adding the xylene.
After adding the xylene I always shake the two layers but most suggest just swirling... At this point I'd suggest adding salt until saturation. This works for two purposes to change ionic strength and prevents/reduces emulsions by making a higher polarity thus better better separation with the solvent.
IF you still have an emulsion I'd suggest adding more solvent... I think think an ultrasonic bath of the solvent and lye solution is a good idea compared to just shaking the two? IDK but you want the most contact of the two.
EDIT: Are you sure you have the correct cactus materiel?
