低功率超声波对微生物发酵的影响

Effect of Low Energy Ultrasonic on the Microorganism Fermentation

超声波应用于微生物的发酵过程中 ,可以在细胞表面瞬间造成微伤 ,使细胞壁局部破裂 ,从而改变细胞膜的通透性 ,使胞内物质释放或胞外物质进入细胞内 ,低功率时 ,伤口很小 ,容易被自身修复 ,不会对生物体造成损伤或死亡。低功率超声加载于微生物的发酵过程中 ,不仅加速细胞的生长 ,同时也可以促进有益次生代谢产物的产率。文章综述了低功率的超声波在微生物发酵中的应用 。

Effect of ultrasonic on fermentation of microorganism makes cell membrane damage and has an increase of cell membrane permeability, and the membrane allows matter within to leave and that outside to enter the cell. When the power of ultrasonic is appropriately low, the cell can be retreated by themselves. Owning to this effect on fermentation, it can promote the cell growth, at the same time, can accelerate the secondary metabolite biosynthesize. As a result, the fermentation time is shortened and the production cost is reduced. This paper summarizes application of low ultrasonic in fermentation of microorganism and discusses its potential mechanism.