I don't think there is much research on solvents to use for making liposomal products so I cannot really recommend anything as a reliable alternative.
This one "claims" a natural method without using alcohol but does not give much detail with only saying how the human body absorbs nutrients but fails to mention that the human body doesn't cope well with absorbing high doses of vitamin c. lol
http://www.nutraingredients-usa.com/Manufacturers/New-liposome-manufacturer-says-process-is-more-natural-needing-no-added-heat-pressure-or-solvents

He is very unspecific with regard to ultra sonic cleaners and what are the most valuable features to look for. If a person has $2500 to $3000 to spend then the one he uses is fine but not many people can afford that type of price.

I was considering asking him but he has no contact details on his site that I could find. I would think that he has tried different methods such as degass, high/low frequency, high/low power, pulse etc so it would of been helpful to know which features provide the best results. It's difficult finding a lower cost ultra sonic cleaner with all the features his has but lower cost cleaners can be purchased but without all the features. Lower cost means sacrificing features but which ones are most important? The question is.....which features give the best results? So which features are best sacrificed?

I only have points and questions but no answers so far unfortunately.