Quantitative contributions of bacteria and of Deinococcus geothermalis to deposits and slimes in paper industry.

Journal of Industrial Microbiology & Biotechnology
Minna PeltolaMirja Salkinoja-Salonen

Abstract

Deinococcus geothermalis has frequently been isolated from pink colored deposits of paper industry processes. Laboratory studies have shown that D. geothermalis is capable of forming on nonliving surfaces patchy biofilms that are resistant to adverse agents such as extreme pH, desiccation, solubilising detergents and biocides. This study was done to quantitatively assess the role of D. geothermalis as a biofouler in paper industry. Colored deposits were collected from 24 European and North American paper and board machines and the densities of the bacterial 16S rRNA genes and those of the red slime producers D. geothermalis and Meiothermus spp. were measured by QPCR (quantitative real time PCR). D. geothermalis was found at nine machines, usually from splash area deposits, but its contribution was minor, 0.001-1%, to the total bacterial burden of 8.3 to log 10.5 log units per gram wet-weight of the deposits. When D. geothermalis was found in a measurable quantity, Meiothermus spp. also was found, often in bulk quantity (7-100% of the total bacteria). The data are in line with the properties of D. geothermalis known from laboratory biofilm studies, indicating this species is a pioneer coloniser of machine surfaces and may help o...Continue Reading

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Citations

Dec 17, 2010·Journal of Industrial Microbiology & Biotechnology·Stiina RasimusMirja Salkinoja-Salonen
Apr 5, 2011·Journal of Industrial Microbiology & Biotechnology·Minna PeltolaMirja Salkinoja-Salonen
Jan 10, 2012·Journal of Bacteriology·Christina LiedertMirja Salkinoja-Salonen
Feb 18, 2011·Canadian Journal of Microbiology·Julie DisnardRichard Villemur
Oct 31, 2013·Journal of Industrial Microbiology & Biotechnology·Christophe NeyretFlorence Dubois-Brissonnet
May 19, 2009·Current Opinion in Microbiology·Johanna Maukonen, Maria Saarela
Apr 13, 2010·International Journal of Systematic and Evolutionary Microbiology·Jaakko V EkmanMirja Salkinoja-Salonen
Jun 21, 2013·Biofouling·Hans-Curt FlemmingTobias Schild

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