本文报告~(60)Co~(-γ)辐射灭菌的条件和效果。用不同辐射剂量~(60)Co~(-γ)照射金黄色葡萄球菌、大肠杆菌、枯草杆菌和青霉菌,经4次实验获得其最小辐射灭菌剂量依次为2×10~3、2.5×10~3、6×10~3、5.5×10~3Gy,为实际应用提供了科学数据。该结果表明细菌的芽胞和真菌的孢子对~(60)Co~(-γ)射线有较强的耐受性。少数菌对辐射有极强的耐受性,辐射剂量与杀菌百分率呈正相关,但不呈直线相关。 This article reports the conditions and effects of ~ (60) Co ~ (-γ) radiation sterilization. Staphylococcus aureus, Escherichia coli, Bacillus subtilis and Penicillium sp. Were irradiated with ~ (60) Co ~ (-γ) at different doses. The minimum radiation sterilization doses obtained in four experiments were 2 × 10 ~ 3 and 2.5 × 10 ~ 3,6 × 10 ~ 3,5.5 × 10 ~ 3Gy, providing scientific data for practical application. The results indicate that spores of bacterial spores and fungi are more tolerant to ~ (60) Co ~ (-γ) rays. A few bacteria are highly tolerant to radiation, radiation dose and the percentage of sterilization was positively correlated, but not a linear correlation.