Process for preparing concentrates of aucubin and catalpol from leaves of Plantago species

摘要

Concentrate of aukubin and catalpole from plantago leaves is prepared by extracting the leaves in hot water, the extract is then separated by filtration, the soluble carbohydrates in the extract are removed by culturing in the presence of monosaccharide and disaccharide utilizing microorganisms (preferably with Saccharomyces cerevisiae they are removed from the medium and the auububin and catalpol are isolated from the separated solution by adsorption on activated carbon.