Deproteinization of shrimp and crab shell powder(SCSP), deacetylation of chitin and depolymerization of chitosan in enzyme method were introduced completely in the article.

• 详细介绍了虾蟹壳酶法脱蛋白、甲壳素酶法脱乙酰及壳聚糖酶法降解这三方面的研究概况。