Added chemicals Average population (n=3), CFU/carrier 4.5 kGy exposure B. megaterium B. pumilus Not added (Control) 1.78×103 2.51×103 0.1% CaCO3 1.41×103 2.32×103 0.2% Calcium lactate 2.13×103 2.52×103 0.5％Glucose 2.17×103 2.70×103 0.5％Sodium pyruvate 1.88×103 2.68×103 L-alanine 1.86×103 2.61×103 D-alanine 2.62×103 2.56×103 0.1% Panvitan powder 1.93×103 3.06×103 0.1% Amino acids mixture 1.95×103 2.95×103 Initial population of B. megaterium was 1.4×106 CFU/carrier and that of B. pumilus was 2.0×106 CFU/carrier

Table 12: Injured population of B. megaterium or B. pumilus exposed with electron beam at 4.5 kGy, which cultivated in SCDA from N company.