Chemicals Population (n=3) CFU/carrier Not added (Control) 1.02×103 0.1% CaCO3 2.56×103 0.2% Calcium lactate 1.75×103 0.1% Panvitan powder 1.64×103 0.1% Amino acid mixture 1.72×103 ATP at 100 μg/ml 1.15×103 0.5% Yeast extract 9.73×103 0.5% Soluble starch 1.34×103 Catalase at 150 μg/ml 1.15×103 L-alanine at 100 μg/ml 1.92×103 0.5% sodium pyruvate 1.84×103 1% fresh milk 1.16×103 1% skim milk 1.55×103 BI of G. stearothermophilus ATCC 7953 was treated with moist heating at 121.1°C for 4 min

Table 6: Recovery effect of several sorts of chemicals on SCDA culture medium from M company.