@tasic_ljubica@LatinXChem The extraction is by acid hydrolysis, and although it is not a water-soluble compound, methods are known to test it orally or, failing that, intraperitoneally, objectives that we have in mind for further experiments.
@tasic_ljubica@LatinXChem Hi Ljubica, QA extract is extracted directly from the bark of the tree, which has been used to date by the original peoples of Chile (Mapuches) for medical purposes.