By use of both enzymolysis and acid hydrolysis, the 6-O-CM-chitin with high MW could be degraded to 6-O-CM-glucosamine, which is a monosaccharide.

• 摘要采用酶降解和酸降解相结合的工艺，将大分子量的6-O-羧甲基甲壳素降解成单分子的6-O-羧甲基氨基葡萄糖，经906型弱碱性阴离子交换树脂柱吸附层析分离，制得羧甲基化氨基糖。