The invention relates to a method for producing
elastase preparation by utilizing liquid-state
fermentation of microbes. The method is characterized in that the
elastase preparation is prepared by activating baclicus lincheniformis ELAT4 (CGMCC5700) which serves as a strain of
elastase production, preparing a seed solution, culturing a
fermentation broth, performing ventilation
fermentation on deep liquid, and preparing an elastase preparation finished product. The
enzyme activity of the liquid prepared by the method is 352U / ml, and the
enzyme activity of the
solid enzyme preparation is 2,512u / g. The method has the advantages of improving the efficiency of elastase production, strengthening the activity of the elastase and reducing the production cost, does not have the problem of waste
solid treatment in the production process, does not pollute the environment, and is suitable for large-scale production of elastase.