Effect of crosslinked condition on characteristics of chitosan/tripolyphosphate/genipin beads and their application in the selective adsorption of phytic acid from soybean whey

► Crosslinking degrees of chitosan/TPP/genipin beads (CB) decreased as increased pH of solution. ► The CB7 (co-crosslinked in pH 7) has the best mechanical strength among these beads. ► The best adsorption ratio of phytic acid of the CBs occurred in pH 1 solution. ► Selective isolation of phytic acid from soybean whey can be processed by CB7.