Identification of the best-performing novel microbial strains from naturally-aged graffiti for biocleaning research

Bosch-Roig, Pilar; Pozo-António, J.S.; Sanmartín, Patricia

doi:10.1016/j.ibiod.2021.105206

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…Microorganisms may be used to remove graffiti paint from heritage buildings. The modified alkyd binders and other organic polymers in the paints [116] are susceptible to some polymerases and lipases in microbial cells [116]. Sanmartin et al [117] isolated a number of paint degrading strains from a wide variety of environmental sources.…”

Section: Removal Of Organic Materialsmentioning

confidence: 99%

Bioconservation of Historic Stone Buildings—An Updated Review

Ortega-Morales

Gaylarde

2021

Applied Sciences

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Cultural heritage buildings of stone construction require careful restorative actions to maintain them as close to the original condition as possible. This includes consolidation and cleaning of the structure. Traditional consolidants may have poor performance due to structural drawbacks such as low adhesion, poor penetration and flexibility. The requirement for organic consolidants to be dissolved in volatile organic compounds may pose environmental and human health risks. Traditional conservation treatments can be replaced by more environmentally acceptable, biologically-based, measures, including bioconsolidation using whole bacterial cells or cell biomolecules; the latter include plant or microbial biopolymers and bacterial cell walls. Biocleaning can employ microorganisms or their extracted enzymes to remove inorganic and organic surface deposits such as sulfate crusts, animal glues, biofilms and felt tip marker graffiti. This review seeks to provide updated information on the innovative bioconservation treatments that have been or are being developed.

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Section: Removal Of Organic Materialsmentioning

confidence: 99%

Bioconservation of Historic Stone Buildings—An Updated Review

Ortega-Morales

Gaylarde

2021

Applied Sciences

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“…However, these measures are not always sufficient due to various factors, such as: (i) local deviations from standard storage conditions or (ii) the appearance in the microbiome of the museum of microorganisms adapted to extreme conditions of existence, for example, xerophilic fungi that survive in increased dryness [ 6 , 7 , 8 ]. In this regard, antimicrobial biocides are used as an important additional measure in conservation and restoration practice [ 9 , 10 , 11 , 12 ]. There are a huge number of antiseptic substances, such as alcohols, aldehydes, phenols, acids, acid esters, amides, carbamates, dibenzamidines, pyridines, azoles, heterocycles, activated halogen compounds, surface active agents, organometallics, and oxidizing agents [ 6 , 13 , 14 ], but only a few of them are used for the conservation and restoration of cultural heritage.…”

Section: Introductionmentioning

confidence: 99%

The Application of Chitosan for Protection of Cultural Heritage Objects of the 15–16th Centuries in the State Tretyakov Gallery

et al. 2022

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Microorganisms are one of the main factors in the deterioration of cultural heritage, in particular art paintings. The antiseptics currently used in painting have significant limitations due to insufficient effectiveness or increased toxicity and interaction with art materials. In this regard, the actual challenge is the search for novel materials that effectively work against microorganisms in the composition with painting materials and do not change their properties. Chitosan has pronounced antimicrobial properties but was not used previously as an antiseptic for paintings. In our study we developed a number of mock layers based on sturgeon glue, supplemented which chitosan (molecular weight 25 kDa or 45 kDa), standard antiseptics for paintings (positive controls) or without additives (negative control). According to Fourier transform infrared spectroscopy and atomic force microscopy, the addition of chitosan did not significantly affect the optical and surface properties of this material. The ability of chitosan to effectively protect paintings was shown after inoculation on the created mock-up layers of 10 fungi-destructors of tempera painting, previously isolated from cultural heritage of the of the 15–16th centuries in the State Tretyakov Gallery, on the created mock layers. Our study demonstrated the principled opportunity of using chitosan in the composition of painting materials to prevent biodeterioration for the first time.

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