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Updated: Feb 11, 2026

Kinetic Screening of Nuclease Activity using Nucleic Acid Probes
Published on: November 1, 2019
Characterization of Virucidal Activities of Chlorous Acid
Hisataka Goda1, Keiko Ikeda2, Mitsunori Nishide3
1Honbu Sankei Co. Ltd.
Abstract:
Virucidal effects of chlorous acid on enveloped and non-enveloped viruses were characterized. The virucidal activity was prominent in enveloped viruses. However, among non-enveloped viruses, viruses such as human rhinovirus and feline calicivirus showed a significant sensitivity to the reagent, whereas others such as poliovirus and coxsackievirus showed a weak sensitivity to the reagent, suggesting the presence of 2 classes of sensitivity to the reagent, among non-enveloped viruses. In addition, characterization of the mode of inactivation by the reagent revealed that virus inactivation is strongly dependent on virus species, contaminated proteins, and solvent system composition. Comparison of the cytotoxic effects of chlorous acid with those of sodium hypochlorite or sodium dodecyl sulfate (SDS) revealed that chlorous acid was similar to SDS and remarkably weaker than sodium hypochlorite. These results indicate the unique nature of chlorous acid as a potent virucidal agent with tolerable tissue damage, and reveal the merits and limitations of chlorous acid as a disinfectant in food hygiene and sanitizer in healthcare.
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