Investigation of the effectiveness of disinfectants against planktonic and biofilm forms of P. aeruginosa and E. faecalis cells using a compilation of cultivation, microscopic and flow cytometric techniques
Wojciech Juzwa , Kamila Myszka , Wojciech Białas , Renata Dobrucka , Piotr Konieczny , Karolina Czaczyk
AbstractThis study evaluated the effectiveness of selected disinfectants against bacterial cells within a biofilm using flow cytometry, the conventional total viable count test and scanning electron microscopy (SEM). A flow cytometric procedure based on measurement of the cellular redox potential (CRP) was demonstrated to have potential for the rapid evaluation of activity against biofilm and planktonic forms of microbes. Quaternary ammonium compound-based disinfectant (QACB) demonstrated a higher level of anti-microbial activity than a performic acid preparation (PAP), with mean CRP values against P. aeruginosa cells of 2 and 1.33 relative fluorescence units (RFU) vs 63.33 and 61.33 RFU for 8 and 24 h cultures respectively. Flow cytometric evaluation of the anti-biofilm activity demonstrated a higher efficacy of QACB compared to PAP for P. aeruginosa cells of 1 and 0.66 RFU vs 18.33 and 22.66 RFU for 8 and 24 h cultures respectively. SEM images of treated P. aeruginosa cells demonstrated disinfectant-specific effects on cell morphology.
|Journal series||Biofouling, ISSN 0892-7014, (A 40 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||biofilm, germicidal activity, disinfectant, flow cytometric analysis, technological surface|
|ASJC Classification||; ;|
|Score|| = 40.0, 05-02-2020, ArticleFromJournal|
= 40.0, 05-02-2020, ArticleFromJournal
|Publication indicators||= 6; : 2015 = 1.151; : 2015 = 3.0 (2) - 2015=3.423 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.