On-Site Assessment of a Cryogenic Disinfectant for the Alpine Environment and Outer Packaging of Frozen Items  

作　　者：SHEN Jin YANG Bin XIAO Jia Qing LI Lu Yao SUN Hui Hui DUAN Hong Yang ZHANG Wei LIANG Chen CHEN Lu LI Li CHEN Yan Yan LYU Yuan TANG Song WANG Jiao ZHANG Liu Bo WANG Lin 

机构地区：[1]National Institute of Environment Health,Chinese Center for Disease Control and Prevention,Beijing 100021,China [2]Shandong Provincial Center for Disease Control and Prevention,Jinan 250013,Shandong,China [3]Heilongjiang Provincial Center for Disease Control and Prevention,Harbin 150030,Heilongjiang,China

出　　处：《Biomedical and Environmental Sciences》2023年第2期174-184,共11页生物医学与环境科学（英文版）

基　　金：supported by National Key R&D Program of China[grant number:2021YFC0863000]。

摘　　要：Objective To study the effectiveness and feasibility of cryogenic disinfectants in different cold scenarios and analyze the key points of on-site cryogenic disinfection.Methods Qingdao and Suifenhe were selected as application sites for the manual or mechanical spraying of cryogenic disinfectants.The same amount of disinfectant(3,000 mg/L)was applied on cold chain food packaging,cold chain containers,transport vehicles,alpine environments,and article surfaces.The killing log value of the cryogenic disinfectant against the indicator microorganisms(Staphylococcus aureus and Escherichia coli)was used to evaluate the on-site disinfection effect.Results When using 3,000 mg/L with an action time of 10 min on the ground in alpine regions,the surface of frozen items,cold-chain containers,and cold chain food packaging in supermarkets,all external surfaces were successfully disinfected,with a pass rate of 100%.The disinfection pass rates for cold chain food packaging and cold chain transport vehicles of centralized supervised warehouses and food processing enterprises were 12.5%(15/120),81.67%(49/60),and 93.33%(14/15),respectively;yet,the surfaces were not fully sprayed.Conclusion Cryogenic disinfectants are effective in disinfecting alpine environments and the outer packaging of frozen items.The application of cryogenic disinfectants should be regulated to ensure that they cover all surfaces of the disinfected object,thus ensuring effective cryogenic disinfection.

关 键 词：Cryogenic disinfectant COVID-19 An alpine environment DISINFECTION Outer packaging of frozen items 

分 类 号：TQ421[化学工程] TS206[轻工技术与工程—食品科学]