细菌纤维素的合成及表征

Synthesis and Characterization of Bacterial Cellulose Membrane

以海南椰子水为主要培养体系,实验室自行筛选的木醋杆菌(Acetobacter xylinum)为菌种,采用静态培养方法制备了细菌纤维素(BC)。对该BC和商业BC的结构和性能进行了测试对比,观察BC的微结构特点。结果表明:制备的BC和商业BC在结构和一些性能方面是相似的,都是无色透明膜,呈三维网状结构和孔洞结构,具有良好的纳米纤维网络特征,具有良好的吸湿性和极佳的持水能力,该实验制备的BC生产成本低,可根据需要大量制备,在生物医学领域具有良好的、广泛的应用前景。

Acetobacter xylinum strain was screened in our own laboratory. Using coconut water as incubating system, bacterial cellulose （BC） was prepared from Acetobacter xylinum by static fermentation culture method. The structure and properties of the BC and commercial BC were tested and compared, and the microstructure characteristics of BC were observed. The results show that the prepared BC and commercial BC are similar in structure and some properties. They are both colorless and transparent film and of a three dimensional network structure and pores structure. It is also proved that the BC has fine nano fibre-network;it has good moisture absorption and excellent water holding capacity. The production cost of the prepared BC is low, and it can be produced in large quantities as required ,which holds out promising application in the field of biomedicine.