Objective To elucidate the components of exopolysaccharides of Nitzschia closterium (EPN), the components of monosaccharide in each EPN, and the conditions for preparing their sulfated products.

• 目的阐明新月菱形藻胞外多糖(exopolysaccharides of Nitzschia closterium,EPN)的成分、单糖组成及其硫酸酯化条件。