Successful combination of chemical and biological treatments for the cleaning of stone artworks

Troiano, Federica; Gulotta, Davide; Balloi, Annalisa; Polo, Andrea; Toniolo, Lucia; Lombardi, Emanuela; Daffonchio, Daniele; Sorlini, C.; Cappitelli, Francesca

doi:10.1016/j.ibiod.2013.08.011

Cited by 37 publications

(30 citation statements)

References 25 publications

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“…Sulphate-reducing bacteria like Desulfovibrio desulfuricans and Desulfovibrio vulgaris; nitrate-reducing bacteria like Pseudomonas stutzeri , and others. (Heselmeyer et al, 1991; Gauri et al, 1992; Ranalli et al, 2000, 2003, 2005; Cappitelli et al, 2005, 2007; Polo et al, 2010; Alfano et al, 2011; Gioventù et al, 2011; Bosch-Roig et al, 2012, 2013a,b; Troiano et al, 2013). …”

Section: Biocleaning Technologies Overviewmentioning

confidence: 99%

“…To date, attention has mainly been paid to testing and confirming the effectiveness of bioprocesses and to optimizing procedures and applications. These included investigation into microorganisms specificity, reducing the required treatment time, the number of applications required and the economic costs, as well as the adoption of more efficient delivery systems among others (Antonioli et al, 2005; May et al, 2008; Bosch-Roig et al, 2013b; Troiano et al, 2013). However, little effort has been dedicated to studying possible future developments for bio-restored CH (Lustrato et al, 2012) and, therefore, little is known about their safety.…”

Section: Safe Biocleaningmentioning

confidence: 99%

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The safety of biocleaning technologies for cultural heritage

Bosch-Roig

Ranalli

2014

Front. Microbiol.

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Section: Biocleaning Technologies Overviewmentioning

confidence: 99%

Section: Safe Biocleaningmentioning

confidence: 99%

The safety of biocleaning technologies for cultural heritage

Bosch-Roig

Ranalli

2014

Front. Microbiol.

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“…To address time challenge, the effects of a sulphate reducing bacterium strain coupled with a non ionic detergent pre treatment were studied on a century old artistic marble affected by black crusts [10]. Compared to the biocleaning alone, the co-treatment needed fewer biological applications and resulted in a 70% reduction in total cleaning time, still retaining all the advantages of the biocleaning approach.…”

Section: Sulphatesmentioning

confidence: 99%

Biocleaning of Cultural Heritage Surfaces

Cappitelli¹

2016

Open Conf. Proceed. J.

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Abstract:Microbial agents are among the major causes of deterioration of cultural heritage, strongly affecting our global cultural legacy, the stone, glass, wood and other sources used to fabricate millions of artworks and monuments around the world. However, it is not all about rotting and erosion! Microbial action has been harnessed to clean the surfaces of stone sculptures and buildings and frescoes. In particular, the ability and potential of different microorganisms to remove undesired sulphates, nitrates and organic matter have been demonstrated a number of times in the last decade.

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“…For example, a lipase based cleaning treatment is efficient in the black patina removal [104]. Biocleaning alone is highly time consuming in the presence of thick and compact crusts, thus it can be combined with a chemical treatment such as the use of a non ionic detergent [96,106]. There is still a need of research about biocleaning treatments because information about their long term effectiveness and their possible adverse effects is lacking.…”

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confidence: 99%

What About Biofilms on the Surface of Stone Monuments?

Martino¹

2016

Open Conf. Proceed. J.

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Bacteria can live either as free planktonic cells in bulk solution, or as sessile cells attached to a surface. In addition to their attachment status, sessile bacteria are part of sessile communities termed biofilms. A biofilm can be defined as a microbial community attached to a solid surface composed of cells organized as microcolonies embedded in an organic polymer matrix of microbial origin. Thus, a biofilm is made of microbial cells and extracellular polymeric substances. The biofilm mode of life provides several advantages to microorganisms including resistance to environmental stresses, increased communication and genetic exchange between cells. Microbial biofilm development can be observed on virtually all kinds of stone monuments such as castles, caves, churches/cathedrals, fountains, temples, tombs/catacombs, etc., and can be associated with problems of conservation. Several types of autotrophic and heterotrophic microorganisms are usually observed on stone monuments such as bacteria, fungi, algae and lichens. The European standard EN15898 defines the main general terms used in the field of conservation of cultural property such as alteration, deterioration, weathering, treatment and cleaning. The term biodeterioration is not defined in the EN15898 standard, but can be defined as "any undesirable change in the properties of a material caused by the vital activities of organism". The biodeterioration of stone materials corresponds to an aesthetic action (production of pigments), to a biochemical action (stone dissolution or salt crystallization driven by cell metabolism) and to a physical action (mechanical pressure during growth). This review has two main objectives: to summarize the actual knowledge about basics of microbial colonization and biodeterioration of stone monuments and to realize a quantitative and qualitative analysis of publications in scientific journals on this topic.Keywords: Biocleaning, biofilm, biodeterioration, monument, microorganisms, stone. DEFINITIONSBacteria can live either as free planktonic cells in bulk solution, or as sessile cells attached to a surface. Antonie van Leuwenhoek was the first scientist to observe sessile bacteria described as aggregates of 'animalcules" living at the human tooth surface. In addition to their attachment status, sessile bacteria are part of sessile communities termed biofilms. Since the pioneer study of Antonie van Leuwenhoek, much has been accomplished in understanding the specifics of the biofilm lifestyle. A biofilm can be defined as a microbial community attached to a solid surface composed of cells organised as microcolonies embedded in an organic polymer matrix of microbial origin. Thus, a biofilm is made of water, microbial cells and extracellular polymeric substances (EPS). Many EPS are highly hydrated but most of the water is not directly bound to the EPS [1,2]. EPS comprise both charged (i.e. positive or negative) and uncharged (i.e. neutral) biopolymers. All major classes of biological macromolecules, i.e., polysaccharide...

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Successful combination of chemical and biological treatments for the cleaning of stone artworks

Cited by 37 publications

References 25 publications

The safety of biocleaning technologies for cultural heritage

The safety of biocleaning technologies for cultural heritage

Biocleaning of Cultural Heritage Surfaces

What About Biofilms on the Surface of Stone Monuments?

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