High boiling solvent (HBS) lignin amine was prepared by Mannich reaction with dimethylamine.The adsorption of HBS lignin amine and bromelain was investigated.

• 利用高沸醇木质素与二甲胺的曼尼希反应合成高沸醇木质素胺并探讨它对菠萝蛋白酶的吸附特性。