ABSTRACT
Bacterial Cellulose (BC), a kind of nano-biomaterial, is produced by some microorganism. It is of particular network structure which is composed of ultra-fine ribbon-shaped fibers. In comparison with plant cellulose, BC displays high purity, high crystallinity, high water-holding capacity, biocompatibility, high mechanical strength and controllability during the course of biosynthesis and so on. This chapter considers acetobacter xylinum selected by the laboratory as the experimental strains, and explored the fermentation conditions that it used wood flour hydrolysate of poplar as carbon source to produce bacterial cellulose. The application of bacterial cellulose involves many kinds of industries such as food industry, biological medicine, membrane material, acoustic equipment vibration of membrane, fuel cell, papermaking and the study of immobilized enzyme and modified materials. The wood flour of poplar needs pretreatment of ball-milling, when the enzyme concentration is 30mg/ ml, the temperature is 50°C, pH value is 6.0 and the time is 5 hours.
