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Survival of Microorganisms on Nonwovens Used for the Construction of Filtering Facepiece Respirators.

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  • Additional Information
    • Source:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 101238455 Publication Model: Electronic Cited Medium: Internet ISSN: 1660-4601 (Electronic) Linking ISSN: 16604601 NLM ISO Abbreviation: Int J Environ Res Public Health
    • Publication Information:
      Original Publication: Basel : MDPI, c2004-
    • Subject Terms:
      Aspergillus niger/*physiology ; Bacillus subtilis/*physiology ; Candida albicans/*physiology ; Escherichia coli/*physiology ; Respiratory Protective Devices/*microbiology ; Staphylococcus aureus/*physiology; Aspergillus niger/growth & development ; Bacillus subtilis/growth & development ; Candida albicans/growth & development ; Escherichia coli/growth & development ; Filtration/instrumentation ; Humans ; Occupational Exposure/prevention & control ; Staphylococcus aureus/growth & development
    • Abstract:
      Filtering nonwovens that constitute the base material for filtering facepiece respirators (FFRs) used for the protection of the respiratory system against bioaerosols may, in favourable conditions, promote the development of harmful microorganisms. There are no studies looking at the impact that different types of filtering nonwovens have on microorganism survival, which is an important issue for FFR producers and users. Five commercial filtering nonwovens manufactured using diverse textile technologies (i.e., needle-punching, melt-blown, spun-bonding) with different structural parameters and raw material compositions were used within our research. The survival of microorganisms on filtering nonwovens was determined for E. coli , S. aureus , B. subtilis bacteria; C. albicans yeast and A. niger mould. Samples of nonwovens were collected immediately after inoculum application (at 0 h) and after 4, 8, 24, 48, 72, and 96 h of incubation. The tests were carried out in accordance with the AATCC 100-1998 method. Survival depended strongly on microorganism species. E. coli and S. aureus bacteria grew the most on all nonwovens tested. The structural parameters of the nonwovens tested (mass per unit area and thickness) and contact angle did not significantly affect microorganism survival.
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    • Contributed Indexing:
      Keywords: filtering facepiece respirators; filtering nonwovens; microorganisms survivability; respiratory protection
    • Publication Date:
      Date Created: 20190403 Date Completed: 20190813 Latest Revision: 20200309
    • Publication Date:
      20250114
    • Accession Number:
      PMC6480171
    • Accession Number:
      10.3390/ijerph16071154
    • Accession Number:
      30935098