Academic thesis

Carla Leupold: Microbially induced pink coloration on wall surfaces. Clarification of the basic growth conditions. Back
Language: Original   -   Translation
Overview:  
 
Example of microbially induced pink coloration on a wall surface
Abstract: The phenomenon of microbially induced pink coloration on wall surfaces has been known since the sixties. The cultivation of the responsible bacteria was difficult from the beginning. Only methods of molecular biology have proven successful in researching the characteristics of the red-pigmented microorganisms.
In order to clarify basic growth conditions, this research assessed and compared 12 different architectural surfaces focussing on climate conditions, salt load, and their composition. The evaluation considered previous studies and own analysis.
All 12 objects had problems with high atmospheric humidity and wet walls over a long period of time. All objects were also highly affected by damaging salts. Analysis has shown that the pink areas exhibit a high concentration of sodium carbonates. Consequently, the pH-values were in the alkaline region. Regarding the grounding, the pink bacteria were always on lime surfaces with assumed organic components. Closer information about these components could not be obtained.
Summing up, it can be said that this research paper has successfully recorded a number of the significant conditions that lead to the phenomenon of pink bacteria on wall surfaces.

Top

 
Crystallisation of salts on an infested area
Details:
  • academic institution: HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/ Holzminden/Göttingen
  • kind of theses:  Diplomarbeit
  • main Tutor:  Prof. Dr. Karin Petersen
  • assistant Tutor:  Prof. Dr. Ivo Hammer
  • date:  2006
  • Language:  German
  • pages:  118
  • pictures:  78
 
Download:
 
full-text thesis  academic theses in german
(pdf-data format, approx. 11.86 MB)
Creative Commons Lizenzvertrag This work is licensed under a Creative Commons BY-NC-ND 3.0 Germany License.
DOI (Digital Object Identifier) 10.5165/hawk-hhg/111
Back

The Hornemann Institute offers only the information displayed here. For further information or copies of academic work, please contact the author or - if there is no contact provided - the secretariats of the respective faculties.