分别以静置和振荡培养方式培养木醋杆菌, 对静置培养及振荡培养得到的细菌纤维素的纤维丝结构、红外光图谱、持水性、复水性以及灰分含量进行了测试, 分析了在静置培养和振荡培养下得到的细菌纤维素的性质和结构差异。结果表明, 静置培养所产纤维素成一薄膜, 纤维结构较纤细、致密, 振荡培养所产纤维素成球状, 两者结构有明显差异;两者的红外光图谱基本一致;振荡培养得到的细菌纤维素的吸水性和复水性均比较好, 而静置培养得到的细菌纤维素灰分含量较低。

Acetobacter xylinum was cultured in shaking and static flasks and the Fourier transform infrared spectra, the water-holding capacity, the water reabsorbing capacity and the ash content of bacterial cellulose were analyzed.The scan electron micrographs showed that the bacterial cellulose produced in static culture was different from that produced in shaking culture.Both of them have similar Fourier transform infrared spectra.The cellulose from shaking culture has better water-holding capacity and better water reabsorbing capacity but more ash content.