Thermostable alpha-amylase-producing, thermophilic anaerobic bacteria, thermostable alpha-amylase and process for producing the same

摘要

The bacterium producing thermostable a-amylases of this invention is an anaerobic bacterium belonging to Clostridium. The thermostable α-amylases of this invention is novel α-amylases which are excellent in thermostability and acid resistance and have a slight calcium requirement. Said α-amylases are obtained by culturing the aforesaid bacteria and collecting the α-amylases from the culture. When the aforesaid a-amylase is used, sugar production process can be greatly rationalized.