Reduction of foodborne pathogens during cattle manure composting with addition of calcium cyanamide
Reduction of foodborne pathogens during cattle manure composting with addition of calcium cyanamide
复制标题
添加氰氨化钙减少牛粪堆肥过程中的食源性病原体
DOI：
10.3846/16486897.2012.721373
复制
发表时间：
2013-07
影响因子：
1.3
通讯作者：
Bai Tong-Ri-Ge
中科院分区：
文献类型：
--
作者：
Simujide;Aorigele;Wang Chun-Jie;M;a;Malina;Wu Mei-Yun;Li Yu;Bai Tong-Ri-Ge
摘要对四种食源性致病菌（E.大肠杆菌、沙门氏菌、E. faecalis和S.研究了在新鲜牛粪恒温堆肥过程中添加氰氨化钙（CaCN 2）对金黄色葡萄球菌（Aaureus）灭活效果的影响，探讨了温度和添加量对灭活效果的影响。在不同堆肥温度（20、30、37和50 °C）下，添加2.0%CaCN 2对堆肥10 d后的病原菌均有明显的抑制或快速灭活作用，且中温条件下的效果比高温条件下更明显。因此，在30 °C下通过将2.0%、2.5%和3.0%的CaCN 2与粪肥混合来确定CaCN 2的理想添加剂含量。随着CaCN 2添加量的增加，对病原菌的灭活效果也随之提高。但试验结果表明，在堆肥过程中加入不低于2.5%的CaCN 2可完全杀灭病原菌。
Abstract Inactivation of four species of foodborne pathogens (E. coli, Salmonella, E. faecalis, and S. aureus) was investigated during laboratory-scale composting of fresh cow manure with addition of calcium cyanamide (CaCN2) at constant temperature conditions, and the effects of temperature and additive content of CaCN2 on the efficacy of inactivation were evaluated. At different composting temperatures (20, 30, 37 and 50 °C), a significant inhibition or quick inactivation of pathogens were observed during 10 d composting with addition of 2.0% CaCN2, and the effect was more obvious at mesophilic temperatures compared to thermophilic temperature. Therefore, the ideal additive content of CaCN2 was determined at 30 °C through mixing 2.0%, 2.5%, and 3.0% CaCN2 with manure. With increase in additive content of CaCN2, the efficacies of pathogen inactivation also increased. However, the result indicates that, no less than 2.5% CaCN2 should be mixed with the manure to entirely eliminate the pathogens during comp...
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