Yes. I suppose it would be mostly tannins, but since caapi is relatively non toxic, i doubt this would be an issue. However, i guess to saturate the caapi properly, a lot of ethanol would be required, and a good press to properly squeeze it out. Perhaps it would even need weeks of soaking to create a worthwhile tincture?

Hmmm..seems like a good idea, seems workable, but maybe simply regular extracted freebased Alkaloids into Alcohol is a better way to exhaust the caapi, create a clean freebase, use little alcohol.

But let's not jump to conclusions yet!  Maybe in practice it may actually be a really quick and efficient technique?