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1

Sewage sludge particle size fractions affect keratinolytic and keratinophilic fungi

100%
Ulfig K., Plaza G., Terakowski M.
Archiwum Ochrony Środowiska
|
2006
|
tom 32
|
nr 4
2

Sewage sludge open-air drying effects on keratinolytic, keratinophilic and actidione-resistant fungi

86%
Ulfig K., Plaza G., Terakowski M., Janda-Ulfig K.
Roczniki Państwowego Zakładu Higieny
|
2006
|
tom 57
|
nr 4
The study was to demonstrate the effect of sewage sludge open-air drying on the quantitative and qualitative composition of keratinolytic/keratinophilic and actidione-resistant fungi. The sludge was being dried for up to thirty days (on average fourteen days) at 25-30°C. The composition of these fungi was determined with the hair baiting method along with the dilution method, using the Wiegand medium supplemented with chloramphenicol (100 mg/L) and actidione (500 mg/L). The open- air drying altered the composition of keratinolytic fungi and considerably increased the population of keratinophilic and actidione-resistant fungi in the sludge. This phenomenon can be explained with that the drying process was associated with slow sludge moisture decrease, sludge laceration due to crumbling and the subsequent improvement of sludge aeration and organic matter biodegradation conditions. A considerable increase of fungal populations can be expected in sludges being dried in drying beds at wastewater treatment plants and in sludge-amended soils. Two sludge opportunistic fungi, i.e. Microsporum gypseum and Pseudallescheria boydii, require special attention from the epidemiological point of view. Sludge land applications may increase the number of these fungi in the environment and the subsequent risk to public health posed by them.
3

Effect of sewage sludge alkalization and acidification on keratinolytic and keratinophilic fungi

72%
Ulfig K.
Polish Journal of Environmental Studies
|
2005
|
tom 14
|
nr 5
This study aimed to determine the influence of sewage sludge alkalization and acidification on the qualitative and quantitative composition of keratinolytic and keratinophilic fungi in a model experiment. The sludge was alkalized to pH 9 with 0.5N NaOH, 0.5N KOH, 0.5N NH₄OH or with 2% burnt lime mixed with powdered limestone (20g CaO + 5g CaCO₃), and acidified to pH 4 with 0.5N HCl, 0.5N HNO₃ or 0.5N H₂SO₄. The sludge with unmodified pH (6.5) served as control. The hair baiting method with four incubation temperatures (23, 29, 33, and 37°C) was used to examine fungi. The sludge alkalization with KOH, NaOH or CaO+CaCO₃ increased the number of keratinolytic fungi but decreased the number of keratinophilic fungi. The inhibition of the growth of keratinolytic fungi was observed due to the sludge acidification with H₂SO₄ or HCl. The sludge acidification with HNO₃ or HCl stimulated keratinophilic fungi to grow. Sludge acidification with HNO₃ eliminated keratinolytic fungi, while acidification with H₂SO₄ eliminated keratinophilic fungi. Results are discussed from ecological and epidemiological points of view.
4

Sludge liming decreases the growth of keratinolytic and keratinophilic fungi

72%
Ulfig K.
Polish Journal of Environmental Studies
|
2006
|
tom 15
|
nr 2
Due to the content of pathogenic organisms, including fungi, sewage sludge land application poses risks to both human health and the environment. One of the ways for reducing pathogens in sludge is liming. This study aims to determine the effect of sludge liming on the composition of keratinolytic and keratinophilic fungi in model experiments. The fungi were examined using the hair baiting method and the dilution method with incubation on a Wiegand medium supplemented with chloramphenicol (100 mg/L) and actidione (500 mg/L). The sludge liming considerably decreased the number of actidione-resistant fungi propagules and eliminated many fungal species, including Pseudallescheria boydii. The influence of this process on hair-baited fungi was that the liming eliminated keratinolytic and keratinophilic fungi at 37°C. In the range of 23-33°C, the liming considerably restricted the growth of keratinolytic fungi, including Microsporum gypseum, but only slightly affected keratinophilic fungi, including Pseudallescheria boydii. The sludge liming decreases the risk posed by geophilic dermatophytes and other keratinolytic fungi, as well as by keratinophilic fungi to humans and the environment. The process affected more keratinolytic fungi than keratinophilic ones.
5

Keratinolytic fungi in an acidic petroleum waste lagoon at a petroleum refinery

72%
Ulfig K., Plaza G., Terakowski M., Worsztynowicz A.
Roczniki Państwowego Zakładu Higieny
|
2002
|
tom 53
|
nr 3
The study was to examine the incidence of keratinolytic fungi in the lagoon with acidic petroleum wastes (before bioremediation) at a petroleum refinery situated within a highly populated area. High concentrations of petroleum hydrocarbons (non-polar and polar aliphatics and PAHs) made the growth of keratinolytic fungi in clay and litter from the lagoon impossible. The natural self-purification process considerably decreased the hydrocarbon contamination, increased the pH and caused the abundant growth of Trichophyton ajelloi in organic soil. This soil included the root-adjacent material from the grass growing in several green oases at the lagoon. It is possible that the strains of Trichophyton ajelloi adapted to the extreme lagoon's conditions actively participated in the soil self-purification process. The fungal species isolated in the present study did not pose a threat to public health. However, petroleum contaminants may support the growth of potential pathogens, for example Microsporum gypseum, in other types of soils.
6

The growth of proteolytic microorganisms affects keratinolytic fungi in sewage sludge

72%
Ulfig K., Plaza G., Janda-Ulfig K.
Roczniki Państwowego Zakładu Higieny
|
2007
|
tom 58
|
nr 2
7
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Proba kompostowania odpadow pierza z zastosowaniem inokulum grzybowego. III. Ocena stanu fitosanitarnego

58%
Kornillowicz-Kowalska T., Bohacz J.
Acta Agrophysica
|
2002
|
tom 73
189-197
8
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Proba kompostowania odpadow pierza z zastosowaniem inokulum grzybowego. II. Dynamika rozwoju drobnoustrojow

58%
Kornillowicz-Kowalska T., Bohacz J.
Acta Agrophysica
|
2002
|
tom 73
189-197
9

Keratinolytic and keratinophilic fungi of mangrove's soil and air in the city of Qena and their response to garlic extract and onion oil treatments

58%
Gherbawy Y. A. M. H.
Acta Mycologica
|
1996
|
tom 31
|
nr 1
10

Studies of keratinolytic and keratinophilic fungi in sewage sludge by means of a multi-temperature hair baiting method

58%
Ulfig K.
Polish Journal of Environmental Studies
|
2003
|
tom 12
|
nr 4
Sewage sludge was examined for keratinolytic and keratinophilic fungi by means of a multi-tempera-ture (23, 26, 29, 33, 37 and 45oC) hair baiting method. Results indicate that this method can be a useful tool for determination of the influence of temperature and other factors on fungal composition in sludge and evaluation of health risk posed by fungal pathogens. The use of the method facilitated recognition of fungal flora much more than a traditional room-temperature method. The method was adapted to quantitative pur-poses. The effect of Petri dish sludge weight on fungal composition was determined. A 10 g weight should be used in qualitative studies while larger weights are more suitable for determination of the influence of environmental factors on fungal growth and composition.
11

Keratinolytic fungi as indicators of hydrocarbon contamination and bioremediation progress in a petroleum refinery

58%
Ulfig K., Plaza G., Worsztynowicz A., Manko T., Tien A. J., Brigmon R. L.
Polish Journal of Environmental Studies
|
2003
|
tom 12
|
nr 2
Keratinolytic fungi were examined in soil heavily contaminated with petroleum waste during long-term bioremediation in a biopile at the Czechowice Oil Refinery located in southern Poland. Soil chemistry and associated microbiological parameters were monitored for 39 months to assess the bioremediation process at this site. These fungi were found to occur relatively frequently in the biopile, with the geophilic dermatophyte, Trichophyton ajelloi (teleomorph Arthroderma uncinatum) as the predominant fungal species. Fungal growth was found to depend on the concentration of petroleum hydrocarbons and their polar derivatives in soil. Results demonstrate that the keratinolytic fungi are a potential tool for assessment of soil petroleum hydrocarbon contamination and associated bioremediation progress.
12
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Optymalizacja warunkow rozkladu odpadow pierza w hodowlach grzybow

51%
Kornillowicz-Kowalska T.
Acta Agrophysica
|
2002
|
tom 73
175-187
13

Interactions between selected geophilic fungi and pathogenic dermatophytes

51%
Ulfig K.
Roczniki Państwowego Zakładu Higieny
|
1996
|
tom 47
|
nr 2
137-142
Interactions between selected geophilic fungi (keratinofytic and keratinophylic species) and pathogenic dermatophytes were examined in dual cultures on Sabouraud glucose agar (SGA). It was demonstrated that Trichophyton mentagrophytes var. mentagrophytes together with T. mentagrophytes var., quinceanum are the species most sensitive to the influences of the geophilic fungi. Microsporum persicolor was found to be more resistant to these influences. Only a few geophilic species inhibited the growth of M. canis on SGA. Keratinophilic species, unable to initiate hair decomposition but utilize the products of this process, exerted the larger inhibitory effect on the pathogenic dermatophytes than keratinofytic fungi.
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