A new approach to catalytic hydrolysis of ester-bound biphenyl cyclooctene lignans from the fruit of Schisandra chinensis Baill by ion exchange resin

► Analyze four kinds of biphenyl cyclooctene lignans by LC-MS simultaneously. ► Ion exchange resins as a catalyst hydrolyze lignans instead of solid catalyst. ► Do not play its traditional ion exchange function, but to hydrolysis ester-bound.