Screening of High Protease Production Strain

This experiment described the separation of strains that could produce protease.Three strains,designated as R1,R2 and R3 respectively,showed high protease activity was screened from the soil then the second round screening was performed and R1 was determined to have the highest activity,relatively.By determining the relative enzyme activity,the optimal temperature and pH was 30℃ and 9,respectively.The enzyme activity that the strain produced was up to 246.8U/ml.