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- Title
THE COLONIZATION OF MORTARS BY BACTERIA AND FUNGI.
- Authors
GOMOIU, IOANA; ENACHE, MĂDĂLIN; MOHANU, ILEANA; COJOC, ROXANA; NEAGU, SIMONA; MOHANU, DAN
- Abstract
Microbial colonization and biodeterioration of mural paintings in historical monuments have as result structural and aesthetic damages due to degradation of organic binders, biomineralization, colored biofilms and discoloration.The original and infilling mortar from refectory of Hurezi monastic complex-Romania was analyzed from structural point of view as well as from microbiological point of view. Visual inspection performed in situ on the northern and western walls revealed: cracks, small and large pink areas on the pictorial layer, original and infilling mortar, small black areas on the infilling mortar and white and pink efflorescences appearing mostly on the infilling mortar. Microscopical observation performed both in situ and in laboratory (Optical Microscope and Scanning Electron Microscope) revealed a pink biofilm and small black colonies. Microbiological analysis confirmed the bacterial origin of the pink biofilm and fungal origin of black colonies. The characteristics of the mortars sustain adhesion of the bacteria and fungi and organic deposits favor their multiplication which is reflected in colonization of the substrate.
- Subjects
BIODEGRADATION; MURAL art; CHEMICAL decomposition; BINDING mediums (Paint); BIOMINERALIZATION; DISCOLORATION; MORTAR
- Publication
Romanian Journal of Materials / Revista Romana de Materiale, 2016, Vol 46, Issue 4, p424
- ISSN
1583-3186
- Publication type
Article