The biodeterioration of materials—an appraisal

Hüeck, H. J.

doi:10.1016/s0964-8305(01)00061-0

Cited by 67 publications

(49 citation statements)

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“…It is widely recognised that all the cultural heritage, defined as the totality of tradition-based creations of a cultural community (UNESCO 2000), exposed to open air is susceptible to biodeterioration, the undesirable change in the properties of a material caused by the activities of organisms (Hueck 1965). Phototrophs, like algae and cyanobacteria, are pioneer microorganisms able to readily colonize outdoor surfaces and develop biofilms, which, in turn, causes aesthetic, chemical and physical decay.…”

Section: Introductionmentioning

confidence: 99%

Color measurements as a reliable method for estimating chlorophyll degradation to phaeopigments

et al. 2010

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The application of biocides is a traditional method of controlling biodecay of outdoor cultural heritage. Chlorophyll degradation to phaeopigments is used to test the biocidal efficacy of the antimicrobial agents. In the present study, the usefulness of color measurements in estimating chlorophyll degradation was investigated. An aeroterrestrial stone biofilm-forming cyanobacterium of the genus Nostoc was chosen as test organism, comparing its different behaviour in both planktonic and biofilm mode of growth against the isothiazoline biocide Biotin T®. Changes in A(435 nm)/A(415 nm) and A(665 nm)/A(665a nm) and in the chlorophyll a and adenosine triphosphate (ATP) cell content were compared with the variations in the CIELAB color parameters (L*, a*, b*, C*(ab) and h(ab)). Our findings showed that both the phaeophytination indexes are useful in describing degradation of chlorophyl a to phaeopigments. Moreover, the CIELAB color parameters represented an effective tool in describing chlorophyll degradation. L* CIELAB parameter appeared to be the most informative parameter in describing the biocidal activity of Biotin T® against Nostoc sp. in both planktonic and biofilm mode of growth.

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Section: Introductionmentioning

confidence: 99%

Color measurements as a reliable method for estimating chlorophyll degradation to phaeopigments

et al. 2010

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“…Biodeterioration is any undesirable change in the quality of a material caused by the vital activities of organisms [1], [3], [8], [9], [10]. The biodeterioration of PMS and AGO are a biochemical assimilatory process (i.e.…”

Section: Problem Statementmentioning

confidence: 99%

Biodeterioration of Premium Motor Spirit and Automotive Gas Oil by Bacterial and Fungal Deteriogens

Stanley¹

2017

AJASR

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Abstract:The study of Biodeterioration of Premium Motor Spirit and Automotive Gas Oil by bacterial and fungal deteriogens was conducted to ascertain the level of spoilage on petroleum samples obtained from African Petroleum and Oando Filling Stations, Port Harcourt. The Spread plate technique was employed for the enumeration of the microorganisms. The samples were cultured on petri-dishes containing nutrient media and potato dextrose agar and were incubated at temperature of 28-31°C for 48 hours and 72 hours for bacterial and fungal growth respectively. The bacterial and fungal isolates were further tested for hydrocarbon utilization potential with a modified mineral salt agar at room temperature for 48 hours and 168 hours respectively. Results showed a high range of total viable counts of Bacterial and Fungal species in samples collected from the stations. Bacillus spp., Pseudomonas spp., Aspergillus spp., Penicillium spp. were isolated from Diesel samples; while Pseudomonas spp., Bacillus spp., yeast spp. and Aspergillus spp. were isolated from Petrol. The Petrol and Diesel distributed by the African Petroleum to customers is of a higher quality than that of Oando Filling Station. There was abundance of microbial growth at Diesel substrates and was least supported by Petrol. This may be as a result of heavy contamination of the samples when in the storage tanks underground. The lead, anti-knock additive (tetra-ethyl lead) in Petrol may be the cause of growth inhibition. It is therefore recommended that adequate control-spoilage measures should be taken in order to prevent bioattack of the petroleum products.

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“…The term biodeterioration is not defined in the EN15898 standard but has been defined as "any undesirable change in the properties of a material caused by the vital activities of organism" by Hueck [26]. The microorganisms colonizing the stone monument surface are divers.…”

Section: Nature Of the Microorganisms Colonizing Stone Monumentsmentioning

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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The biodeterioration of materials—an appraisal

Cited by 67 publications

References 0 publications

Color measurements as a reliable method for estimating chlorophyll degradation to phaeopigments

Color measurements as a reliable method for estimating chlorophyll degradation to phaeopigments

Biodeterioration of Premium Motor Spirit and Automotive Gas Oil by Bacterial and Fungal Deteriogens

What About Biofilms on the Surface of Stone Monuments?

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