Added chemicals Average population (n=3), CFU/carrier Exposure condition (kGy) 5 Not added (Control) 4.84×102 CaCO3 6.12×102 0.2% Calcium lactate 6.33×102 0.5% Soluble starch 4.90×102 0.15% Activated charcoal 4.80×102 L-alanine at 100 μg/ml 6.41×102 D-alanine at 100 μg/ml 6.93×102 0.1% Panvitan powder 7.15×102 0.1% Amino acids mixture 7.22×102 0.5% Sodium pyruvate 6.34×102 0.5% Glucose 5.50×102 Initial population was 2×106 CFU/carrier

Table 11: Recovery effect of several sorts of chemicals on SCDA culture medium from N company by using B. pumilus spore.