Strains degrading polysaccharides produced by bacteria from paper machines

Marjaana Rättö, Annikka Mustranta, Matti Siika-aho

    Research output: Contribution to journalArticleScientificpeer-review

    17 Citations (Scopus)


    Biofilm-degrading enzymes are potential agents for slime control in paper machines. In this work, extracellular polysaccharides were produced by bacteria isolated from paper machines and the isolated polysaccharides were used as substrates for the screening of polysaccharide-degrading microbes. Polysaccharide yields of 1.5–3.5 g/l were obtained by ethanol precipitation from cultures of strains of Klebsiella pneumoniae, Bacillus licheniformis and Pseudomonas fluorescens on sucrose medium. Two K. pneumoniae strains apparently produced an identical heteropolysaccharide containing galacturonic acid. Fructose-containing polysaccharides were the main products of B. licheniformis and P. fluorescens. Bacteria capable of hydrolyzing the fructose-containing polymers (levans) appeared to be relatively common among the strains selected for screening. None of the bacteria or mixed cultures screened were able to utilize the Klebsiella heteropolysaccharides.
    Original languageEnglish
    Pages (from-to)182-185
    Number of pages4
    JournalApplied Microbiology and Biotechnology
    Issue number1-2
    Publication statusPublished - 2001
    MoE publication typeA1 Journal article-refereed


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