On the other hand, hydrolyzable tan

On the other hand, hydrolyzable tannins showed little activity,although many galloyl groups existed in their structures. Among the hydrolyzable tannins, strictinin, which had a hexahydroxy-diphenoyl ester, showed the same level of activity as flavan-3-ol gallate esters. However, other hydrolyzable tannins pos-sessed some galloyl groups (51-53) with little or zero activity.These data suggested that the intermolecular galloyl groups themselves were not essential for lipase inhibition activity.