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1

Gemini alkylammonium salts as biodeterioration inhibitors

100%
Brycki B.
Polish Journal of Microbiology
|
2010
|
tom 59
|
nr 4
To protect materials against biodetenoration, physical, biological or chemical methods can be used. Chemical inhibitors of biodetenoration are the most common and effective. A new class of chemical inhibitors-gemini alkylammonium salts-shows excellent biocidal properties and good ecological profile. These compounds can be applied as biodeterioration inhibitors in a wide variety of materials.
2

Biodeterioration of optical glass induced by lubricants used in optical instruments technology

100%
Bartosik M., Zakowska Z., Cedzinska K., Rozniakowski K.
Polish Journal of Microbiology
|
2010
|
tom 59
|
nr 4
The process of biodeterioration of optical glass was studied after being induced by an auxiliary material (lubricant 4CKP) used in the production of optical instruments. It was determined that the lubricant can initiate growth of conidia of Aspergillus niger fungus. Acid spawn metabolites cause deterioration of the glass surface. Measurements of laser light beam transmittance through the glass plate and the AAS chemical analysis method of the post-culture fluid allowed to determine that glass with a high SiO₂ content is most resistant to corrosion caused by the growth of A. niger fungi spawn.
3

Antifungal activity of 2-hydroxy-4-methoxybenzaldehyde isolated from Decalepis hamiltonii [Wight and Arn.] on seed-borne fungi causing biodeterioration of paddy

72%
Mohana D. C., Satish S., Raveesha K. A.
Journal of Plant Protection Research
|
2009
|
tom 49
|
nr 3
250-256
In vitro antifungal activity assay of different concentrations of 2-hydroxy-4-methoxybenzaldehyde isolated from Decalepis hamiltonii against six important seed-borne fungal pathogens viz., Alternaria alternata, Drechslera tetramera, Fusarium oxysporum, F. proliferatum, Pyricularia oryzae and Trichoconis padwickii isolated from paddy seeds revealed that, the compound 2-hydroxy-4-methoxybenzaldehyde showed significant antifungal activity. Among the fungi tested, F. proliferatum showed highest inhibitory activity, whereas P. oryzae showed least inhibitory activity. The minimal inhibitory concentration (MIC) varied between 350 μg/ml and 650 μg/ml depending on the fungal species. Comparative evaluation of the active compound with the synthetic fungicide thiram at recommended dosage revealed that, the antifungal activity of the active compound obtained from the plant was almost equivalent. Evaluation for nutritional parameters and dry matter losses (DML) revealed that, total carbohydrates, water soluble proteins, lipids and dry matter losses were significantly confined in 2-hydroxy-4-methoxybenzaldehyde treated paddy seeds compared with control seeds. This plant being an edible one can be exploited in the management of seed-borne pathogenic fungi and in the prevention of biodeterioration of grains and mycotoxin production during storage in an eco-friendly way.
4
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Bioaerosol assessment in naturally ventilated historical library building with restricted personnel access

72%
Harkawy A., Gorny R. L., Ogierman L., Wlazlo A., Lawniczek-Walczyk A., Niesler A.
Annals of Agricultural and Environmental Medicine
|
2011
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tom 18
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nr 2
5

Biodeterioration of Mater-Bi Y class in compost with sewage sludge

72%
Rutkowska M., Krasowska K., Steinka I., Janik H.
Polish Journal of Environmental Studies
|
2004
|
tom 13
|
nr 1
This paper presents results of biodeterioration of Mater-Bi YI01U under natural weather conditions in compost with sewage sludge. The tests were performed at a waste treatment plant and - for comparison - under laboratory conditions at stable temperature. The compost pile was prepared outdoors at a waste treatment plant and consisted of active sludge, burnt lime /CaO/ (to ravage pathogenic bacterium and eggs of parasites) and straw. The characteristic parameters of compost, such a dry mass of compost, pH of compost and activity of dehydrogenases were determined. Changes in weight and morphology of Mater-Bi YI01U samples were tested during the experiment. The obtained weight loss results were compared with that from Weight Loss Under Controlled Composting Condition test method, which simulates the biodegradation behaviour of a material under composting conditions. According to this test method, Mater-Bi Y Class lost more than 90% of weight after 4 months when disposed of in the standard environment under controlled conditions, but in the investigated natural, weather-dependent, composting conditions this material lost about 20% of weight after the same time of incubation.
6
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Study on fungi inhabiting indoor woods and their eco-friendly management

58%
Tapwal A., Kalyan P., Kumar S., Chandra S.
International Letters of Natural Sciences
|
2016
|
tom 59
7
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Filamentous microorganisms and their fragments in indoor air - a review

58%
Gorny R. L.
Annals of Agricultural and Environmental Medicine
|
2004
|
tom 11
|
nr 2
The paper summarizes the current state of knowledge regarding the role of filamentous microorganisms (i.e., fungi and actinomycetes) and their submicrometer propagules (fragments) in formation of indoor bioaerosol. It discusses the importance of water damages in buildings and the role of humidity as a cause of fungal and actinomycetal contamination and subsequent deterioration of indoor spaces. The importance of the size of airborne microbial propagules for adverse health effects is broadly commented as well. Regarding the microbial fragments, the method of their release from the contaminated surfaces (including factors influencing their aerosolization, i.e., air velocity, colony structure, moisture conditions, vibration of the surface, time factor), modern measurement techniques and newly obtained results of the immunological reactivity of fragments are discussed. The novel ideas concerning the dynamic description of the release process of microbial propagules from their sources are also presented.
8

Characterisation of actinomycetes isolated from ancient stone and their potential for deterioration

58%
Abdulla H., May E., Bahgat M., Dewedar A.
Polish Journal of Microbiology
|
2008
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tom 57
|
nr 3
Actinomycetes have been isolated from decayed and sound stone samples taken from a tomb site at Tell Basta, Zagazig City, Egypt. A total of 160 isolates have been characterised. The numbers and distribution of actinomycetes were studied during different seasons; during the winter months (18-20°C), actinomycete numbers ranged from 10³ to 10⁴ cfu/g; in the summer (28-38°C) lower counts were recorded. The actinomycete isolates were assigned to 4 different taxonomic groups: 54% belonged to the Streptomyces group, 26% to the Nocardia group, 14% showed the characteristics of the Micromonospora group, while the rest of the isolates analyzed (6%) were assigned to the sporangiate-type group of actinomycetes. The ability of the isolates to produce pigments as well as tolerance to high salinity were determined. It was shown that about 88% of the strains studied had the ability to produce extracellular pigments. Only 25% of the studied isolates showed tolerance to high salinity. The significance of actinomycetes to attack and degrade building stone was shown in laboratory experiments: actinomycetes recovered both from sound and decayed stones were capable of damaging stone under laboratory conditions as an up to 4% weight loss was recorded for some isolates.
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