Purification and characterization of hydrolysable tannins extracted from Coriaria nepalensis bark using macroporous resin and their application in gallic acid production

As an indispensable chemical raw material, tannins are widely used in industrial production. The crude tannins extracted from plants are difficult to be used directly because of their low purity. Therefore, tannins purification are particularly important. In this study, an economical and efficient method was developed for the purification of novel vegetable tannin resources from Coriaria nepalensis bark by macroporous resin. The purity of the...