Method for preparing bacterial cellulose by low-pH fermentation method

The invention relates to a method for preparing bacterial cellulose by a low-pH fermentation method. According to the method provided by the invention, the foal bacillus is used for fermenting to produce the bacterial cellulose, in the method provided by the invention, all components of the culture medium and glucose are separately sterilized, and the pH values of the shake flask culture medium, the seed tank culture medium and the fermentation tank culture medium are controlled to be 4.0-5.5, so that no bacterial contamination of a fermentation system is realized, and meanwhile, the yield and the yield of the bacterial cellulose are also improved. The method provided by the invention is simple to operate, suitable for industrial production, remarkable in economic benefit and good in application prospect. 本发明涉及一种低pH发酵法制备细菌纤维素的方法。本发明使用驹形杆菌发酵生产细菌纤维素，在本发明提供的方法中，将培养基各组分与葡萄糖分开灭菌，并通过控制摇瓶培养基、种子罐培养基和发酵罐培养基的pH为4.0-5.5，在实现了发酵体系无染菌的同时，也提高了细菌纤维素的产量和产率。本发明所提供的方法操作简单，适用于工业化生产，经济效益显著，应用前景良好。