Functionalized cellulose beads with three dimensional porous structure for rapid adsorption of active constituents from Pyrola incarnata

Abstract

In the present study, porous magnetic cellulose beads (CBs) were prepared and further modified using amines. The CBs appeared to have good spherical shape and three-dimensional (3D) porous structure. In the adsorption tests, the modified cellulose beads (MCBs) showed better adsorption capacities and shorter adsorption times on hyperin and 2′-O-galloylhyperin than the commercial resins. The adsorption may be due to the hydrogen bonding between the target compounds and the amine groups of MCBs. After adsorption and desorption, the contents of hyperin and 2′-O-galloylhyperin reached 1.32% and 3.92%, which were 4.08 and 4.23 times higher than those in the Pyrola extracts. Therefore, the prepared MCBs in this study make an excellent adsorbing material of hyperin and 2′-O-galloylhyperin, and it may have potential for the separation of other natural compounds.