Antagonistic activity of Staphylococcus siderophores and chemical biocides against Bacillus subtilis in a paper-machine environment

Laura Raaska, Hanna-Leena Alakomi, Mirja Salkinoja-Salonen, Tiina Mattila-Sandholm

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)


    The antagonistic potential of nonpathogenic Staphylococcus strains against Bacillus subtilis wild and type strains were studied under conditions simulating a paper- and board-machine environment. The antimicrobial activity was measured by growth inhibition in an automated turbidimeter. The antagonistic potential was compared with that of generally used chemical biocides in a paper- and board-machine environment. The siderophore-containing extracts of Staphylococcus strains significantly inhibited vegetative growth of B. subtilis and delayed the germination of spores both in synthetic and in white-water media. The mill strains were more resistant than type strain against Staphylococcus siderophores and against chemical biocides. The Staphylococcus siderophore-containing extracts did not interfere with the bacteriostatic effect of chemical biocides, but no synergy was detected. The results indicate the potential for application of Staphylococcus siderophore-containing extracts as biocontrol agents in paper- and boardmachine environment.
    Original languageEnglish
    Pages (from-to)27-32
    Number of pages6
    JournalJournal of industrial microbiology and biotechnology
    Issue number1
    Publication statusPublished - 1999
    MoE publication typeA1 Journal article-refereed


    • Bacillus subtilis
    • siderophores
    • antimicrobial
    • biocides
    • white water
    • papermachines
    • boardmachines
    • Staphylococcus


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