Production method of high activity nattokinase and natto powder
The invention relates to the technical field of bioengineering and food processing, particularly uses an optimized culture medium composition, carries out culture by using the classic deep fermentation technology, and performs spray drying in the protection of protein to obtain high enzyme activity high cell concentration natto powder. The method has the characteristics of cheap and easily accessible raw materials, and simple and feasible production process. The product can be used as foods for special dietary uses, functional food, health food and functional raw materials of pharmaceutical intermediates.