Evaluation of the Survivability of Microorganisms Deposited on Filtering Respiratory Protective Devices under Varying Conditions of Humidity
Bibliographic Data
| ID | 15501725 |
|---|---|
| Authors | Katarzyna Majchrzycka (0000-0002-0813-4260, Central Institute for Labour Protection, corresponding author), Małgorzata Okrasa (0000-0003-4980-0909, Central Institute for Labour Protection), Justyna Skóra (Lodz University of Technology), Beata Gutarowska (0000-0002-9523-2001, Lodz University of Technology) |
| Year | 2016 |
| Volume | 13 |
| Issue | 1 |
| Pages | 98-98 |
| Publication date | 2016-01-04 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph13010098 |
| PMID | 26742049 |
| OpenAlex | W2210514154 |
| Language | EN |
| Citations received | 7 |
| References cited | 32 |
Bioaerosols are common biological factors in work environments, which require routine use of filtering respiratory protective devices (FRPDs). Currently, no studies link humidity changes in the filter materials of such devices, during use, with microorganism survivability. Our aim was to determine the microclimate inside FRPDs, by simulating breathing, and to evaluate microorganism survivability under varying humidity conditions. Breathing was simulated using commercial filtering facepiece respirators in a model system. Polypropylene melt-blown nonwoven fabrics with moisture contents of 40%, 80%, and 200%, were used for assessment of microorganisms survivability. A modified AATCC 100-2004 method was used to measure the survivability of ATCC and NCAIM microorganisms: Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Candida albicans and Aspergillus niger. During simulation relative humidity under the facepiece increased after 7 min of usage to 84%-92% and temperature increased to 29-30 °C. S. aureus survived the best on filter materials with 40%-200% moisture content. A decrease in survivability was observed for E. coli and C. albicans when mass humidity decreased. We found that B. subtilis and A. niger proliferated for 48-72 h of incubation and then died regardless of the moisture content. In conclusion, our tests showed that the survivability of microorganisms on filter materials depends on the amount of accumulated moisture and microorganism type
Aspergillus niger · Bacillus subtilis · Bacteria · Biofilter · Biology · Candida albicans · Composite material · Humidity · Indoor bioaerosol · Microorganism · Moisture · Relative humidity · Respirator · Survivability · Chemistry · Climate Change and Health Impacts · Computer Science · Environmental Science · Indoor Air Quality and Microbial Exposure · Infection Control and Ventilation · Materials Science · Environmental Chemistry · Environmental Engineering · Food Science · Microbiology
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Survival of Microorganisms on Nonwovens Used for the Construction of Filtering Facepiece Respirators
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| Unique citing works | 7 |
|---|---|
| Citations per year | 0,78 |
| Citation span | 2017 - 2022 (6) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 7 |