The Rapid Decrease in the Biological Reactivity of Water Activated by Air Spark Discharge Plasma
ABSTRACT To investigate the biological reactivity of plasma‐activated water (PAW), we prepared PAW using atmospheric air spark discharge over water at 4°C and 25°C, with Escherichia Coli ( E. coli ) as the microbial model. The biological reactivity of PAW at 25°C decreased rapidly by 3.32 Logs within 20 s of storage. At 4°C, PAW showed high reactivity within 20–30 s of storage but decreased by 3.50 Logs between 30 and 60 s. Our analysis revealed that PAW reactivity is dependent on short‐lived peroxynitrite (ONOOH), formed through H 2 O 2 and HNO 2 under acidic conditions. ONOOH actively reacts with amino acid functional groups, as measured by high‐resolution LC‐MS, likely contributing to the rapid inactivation of E. coli .
Authors
- Dongping Liu (ORCID: https://orcid.org/0000-0002-4862-1784)
- Di Dou
- Zhenyu Zhou (ORCID: https://orcid.org/0000-0002-5024-5263)
- Huihui Wan (ORCID: https://orcid.org/0000-0001-8642-731X)
- Zhishang Wang (ORCID: https://orcid.org/0000-0002-1716-2095)
- Qiang Wang (ORCID: https://orcid.org/0000-0003-2719-2762)
- Tao Zhang (ORCID: https://orcid.org/0000-0001-6643-4686)
- H. J. Yang (ORCID: https://orcid.org/0009-0004-8274-9863)
- Guoqiang Liu (ORCID: https://orcid.org/0009-0007-7526-5475)
- Chao Chen (ORCID: https://orcid.org/0000-0002-1865-7751)
- Dongxue Feng (ORCID: https://orcid.org/0009-0008-0742-6895)
Institutions
- Dalian University of Technology (CN)
- Dalian University (CN)
- Liaoning Cancer Hospital & Institute (CN)
Publication Details
- Journal
- Plasma Processes and Polymers
- Published
- 2024-11-03
- DOI
- https://doi.org/10.1002/ppap.202400174
- Citations
- 5
- Primary Topic
- Plasma Applications and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 2.02
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities