2013•Zhongguo yiyuan ganranxue zazhiRequires access
Germicidal efficacy of new compound Chinese herbs disinfectant
LU Xiao-qin
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Abstract
OBJECTIVE To study the germicidal efficacy of new compound Chinese herbs disinfectant.METHODS The suspension quantitative germicidal test was performed to research the germicidal and stable efficacy of the new compound Chinese herbs disinfectant of different concentrations(No.1-No.5)prepared from andrograpis,honeysuckle,radix,and natural water-soluble chitosan.The influence of organic matters or pH value on the germicidal efficacy was also observed.RESULTS The killing logarithm value(KL)was 5 to Staphylococcus aureus in suspension exposed to No.5 compound Chinese herbs disinfectant for 5min,the same results to Vibrio Parahemolyticus in suspension exposed to No.2 compound Chinese herbs disinfectant for 2min.The killing logarithm value(KL)to S.aureus and Escherichia coli was obviously decreased while bacteria suspension was mixed with calf serum in a ratio of 1∶1and 3∶1.The killing logarithm value did not change obviously after the new compound Chinese herbs disinfectant was stored in 54℃ incubator for 14 days.The killing rate to the natural bacteria from shell fishes for 10min was 90% by using the No.1,2,3,4and 5compound Chinese herbs disinfectant.CONCLUSION The new compound Chinese herbs disinfectant can effectively kill S.aureus and V.Parahemolyticus in suspension,and the disinfectant shows high germicidal efficacy to the natural bacteria from shell fishes.