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  • 1
    Electronic Resource
    Electronic Resource
    Antagonistic activity of Staphylococcus siderophores and chemical biocides against Bacillus subtilis in a paper-machine environment (1999)
    Springer
    Journal of industrial microbiology and biotechnology 22 (1999), S. 27-32 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: Bacillus; siderophores; antimicrobial; biocides; white water; paper- and boardmachine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900596
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  • 2
    Electronic Resource
    Electronic Resource
    Impact of biological factors on the ennoblement of stainless steel in Baltic seawater (2000)
    Springer
    Journal of industrial microbiology and biotechnology 24 (2000), S. 410-420 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: biofilm; stainless steel; ennoblement; Baltic Sea; season; laboratory ecosystem
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Open circuit potentials of stainless steels increased when immersed in the Baltic Sea. The ennoblement potential was +200 mVsce in 40 to 50 days when sea water temperature was below 52°C and +300–400 mVsce within 〈40 days at around 102°C. Ennoblement occurred in a laboratory ecosystem at 232°C in 20 to 30 days, and at 262°C in 〈20 days, but no ennoblement occurred at A322°C within 40 days. By the time the ennoblement was complete, compact microcolonies covered 1–10% of the steel surface. Nutrient enrichment of Baltic Sea water by twofold above the natural levels increased microbial growth but attenuated open circuit potential increase of the stainless steels. Exposure of the ennobled stainless steels to similar levels of nutrients did not reverse the already developed open circuit potentials. Attenuation of the ennobling response of the stainless steels by increases of temperature and eutrophication suggests a role for microorganisms which is crucial for the electrochemical behaviour of steels in brackish Baltic Sea water. Journal of Industrial Microbiology & Biotechnology (2000) 24, 410–420.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.7000001
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of iron level on the anatagonistic action of siderophores from non-pathogenicStaphylococcus spp (1995)
    Springer
    Journal of industrial microbiology and biotechnology 15 (1995), S. 480-485 
    Details
    ISSN: 1476-5535
    Keywords: Staphylococcus ; siderophore ; iron ; starter cultures ; fermented meat products ; antagonism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The production, detection and the effects of iron concentration on the siderophore production ofStaphylococcus strains used as meat starter cultures were studied. Non-pathogenicStaphylococcus strains produce extracellular low molecular weight compounds which exhibited positive reactivity when measured by a universal detection method for siderophores. The production of siderophores was very closely associated with the iron concentration in the medium, and very low additions considerably reduced siderophore production. Although the production of siderophores was highly iron-dependent, the antimicrobial activity of spent medium fromStaphylococcus cultures against selected yeasts and moulds remained considerable under high iron concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01570018
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  • 4
    Electronic Resource
    Electronic Resource
    Detection of siderophores in growing cultures ofPseudomonas spp. (1993)
    Springer
    Journal of industrial microbiology and biotechnology 11 (1993), S. 181-186 
    Details
    ISSN: 1476-5535
    Keywords: CAS-assay ; Iron-binding ; Pseudomonas ; Siderophore
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary The siderophores produced byPseudomonas fluorescens andP. chlororaphis were detected from the culture supernatants in MM9 and modified King's medium by the universal CAS assay at wavelengths 620–690 nm. The CAS assay was applied to detectPseudomonas siderophores directly in situ, during their production phase, in modified King's medium. Optimum results were detected with a final CAS concentration of 0.025 mM and an iron concentration of 1.25 μM. The problems of the method are discussed with respect to the absorbance spectrum, the toxicity of the HDTMA detergent, the influence of the iron concentration and the complexity of media for siderophore production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01583720
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    Paper (German National Licenses)
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