Study on the Bactericidal Effect of Ortho-Phthalaldehyde Combination Disinfectant
Science Discovery
Volume 5, Issue 6, November 2017, Pages: 479-485
Received: Dec. 27, 2017; Published: Dec. 28, 2017
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Authors
Yi Jialin, School of Life Sciences, Shanghai University, Shanghai, China
Niu Bing, School of Life Sciences, Shanghai University, Shanghai, China
Deng Zhirui, School of Life Sciences, Shanghai University, Shanghai, China
Chen Qin, School of Life Sciences, Shanghai University, Shanghai, China
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Abstract
This study used combination of ortho-phthalaldehyde(OPA) and quaternary ammonium surfactants (QAS) with different concentration to kill Escherichia coli, Staphylococcus aureus, Candida albicans and Aspergillus niger conidia. The concentration of the combination disinfectant to kill Escherichia coli, Staphylococcus aureus and Candida albicans was 75mg/L OPA and 30mg/L QAS within 10 min, respectively. The average killing log value was above 4 when Aspergillus niger conidia was exposed in 3.75g/L OPA and 1.50g/L QAS for one hour. Then the effects of time, temperature and organic concentration on the bactericidal effect were measured. And the metal corrosion and stability of the combination disinfectant were determined. In addition, these results showed that the combination disinfectant had a high efficiency of bacteria killing and the concentration of organic affected its bactericidal effect. The average killing log value gradually increased along with the temperature within 10°C. to 40°C. And the combination disinfectant also has the advantages of low corrosive of metal, good stability and so on.
Keywords
Ortho-Phthalaldehyde, Escherichia coli, Metal Corrosive, Quaternary Ammonium Surfactants
To cite this article
Yi Jialin, Niu Bing, Deng Zhirui, Chen Qin, Study on the Bactericidal Effect of Ortho-Phthalaldehyde Combination Disinfectant, Science Discovery. Vol. 5, No. 6, 2017, pp. 479-485. doi: 10.11648/j.sd.20170506.25
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