Production of tetracyclic and pentacyclic triterpene acids comprises precipitation from biological material, especially plant resin, with calcium or magnesium salt

摘要

Production of the tetracyclic and pentacyclic triterpene acids comprises: (a) dissolution of the biological material in an appropriate manner; (b) precipitation with one or more calcium and/or magnesium salts; and (c) isolation of the acid(s) as the precipitate.