In vitro activity of disinfectants against Aspergillus spp

Mattei, Antonella Souza; Madrid, Isabel Martins; Santin, Rosema; Schuch, Luiz Filipe Damé; Meireles, Mário Carlos Araújo

doi:10.1590/s1517-83822013000200024

Cited by 14 publications

(9 citation statements)

References 10 publications

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“…In the present study, after 2.5 minutes, the mean MVC/ml of isolated Aspergillus sp. was 3 colonies (21). In a study carried out by Nowrozi and co-workers, in the low dilution (2.5%) of Chloroxylenol at 15 min contact time, all isolates were resistant but with the increase of contact time, the resistant dcresed (20).…”

Section: Resultsmentioning

confidence: 94%

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The Best Commercial Chemical Disinfectant for Swimming Pools Environments Contaminated With Fungi

Badiee

Rouein

Zaravar

et al. 2020

Preprint

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Background: Swimming pools are contaminated with different microorganisms. This study aimed to investigate the fungal contamination of the swimming pools and detect the susceptibility of the isolated fungi to routinely used disinfectants.Methods: Surface and water samples were collected from different parts of 13 indoor swimming pools. Isolated fungal species were identified based on respective colony morphology, microscopic examination, and RFLP-PCR. Susceptibilities of fungal species to common disinfectants used in swimming pools were investigated, according to M38-A and M27A3 protocols.Results: Of the 795 collected specimens, 2211 isolates from 35 fungal species were identified. The most isolated fungi were filamentous hyaline hyphomycetes (especially Aspergillus spp.), and dematiaceous (especially Cladosporium spp.), followed by Mucorales, Candida species and dermatophyte species. The most contaminated places were shoes changing and dressing rooms. Sodium hypochlorite (bleach) and chloroxylenol (Dettol) were found to be effective against all isolated fungi after 2.5 and 5 minutes, respectively. Isopropyl alcohol (Afrooz disinfectant solution) was not an effect on Aspergillus spp., dematiaceous fungi, and Candida spp. after 10 minutes’ exposure. The efficacy of hydrochloric acid (liqueur de Javel) showed the most fungicidal activity against dermatophytes at all times. Conclusions: For efficient cleaning, the disinfectant must remain on the surfaces for an appropriate period. Sodium hypochlorite was efficient antifungal activity in a shorter time for killing all species of fungi. Given the different sensitivity and resistance profile of fungi to disinfectants, regular assessment of the disinfectants used for cleaning the pools is suggested.

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Section: Resultsmentioning

confidence: 94%

“…Mattei and co-worker reported that Chlorhexidine-cetrimide, benzalkonium chloride, and a chlorophenol derivative presented effective property against all Aspergillus isolate, except for the A. avus strain (21). Sodium hypochlorite in Mattei et al was ineffective against three A. fumigatus, three A. avus, and one A. niger isolate.…”

Section: Resultsmentioning

confidence: 99%

The Best Commercial Chemical Disinfectant for Swimming Pools Environments Contaminated With Fungi

Badiee

Rouein

Zaravar

et al. 2020

Preprint

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“…showed that Hypo has the least effect against the pathogens as compared to Dettol and Izal (Mattei et al, 2013;Okore et al, 2014;Gargi et al, 2017;Soyemi et al, 2018). However, other studies reported that Hypo was more effective than Dettol and Izal on the same orga-nisms (Al-Dabbagh et al, 2015;Shuaibu et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Sensitivity of mycelial growth of mushroom Agrocybe semiorbicularis to different concentrations of different disinfectants

Buba¹,

Agbo²,

Abdullahi³

et al. 2019

bta

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This study was performed to determine the effects of different types of disinfectants (Hypo, Izal, and Dettol) on the mycelial growth of the mushroom Agrocybe semiorbicularis. The more evolutionarily advanced mushroom mycelium was expected to show greater resistance to disinfectants than other fungal and bacterial contaminants. Minimal disinfectant concentration was the one at which contaminants were inhibited, while the growth of the desired mushroom mycelia remained unaffected. Different concentrations of different disinfectants were added to the growth media, and the pure mushroom mycelial culture was inoculated on the media and left to grow. The results revealed that the probability of contamination was higher in all the concentrations of Hypo and in lower concentrations of Dettol and Izal. At 5% concentration of the disinfectants (Hypo, Izal, and Dettol), the mean values of contamination were 0.667, 0.417, and 0.00 (P < 0.001), respectively. At 10% concentration, the mean contamination values were 0.167, 0.583, and 0.333 (P > 0.05), respectively, while at 15% concentration, the mean contamination values were 1.000, 0.417, and 0.250 (P < 0.05), respectively. At higher concentrations of the disinfectants, the growth of contaminants was completely suppressed, and the growth of the desired mycelia was also significantly decreased. At 17% concentration of the disinfectants (Hypo, Izal, and Dettol), the mean values of contamination were 0.833, 0.833, and 0.00 (P < 0.05), respectively. At 18% disinfectant concentration, the mean contamination values were 0.167, 0.00, and 0.00 (P > 0.05), respectively, while at 20% disinfectant concentration, the mean contamination values were 0.583, 0.00, and 0.00(P < 0.05), respectively. The mean values of the mushroom's mycelial growth for the three disinfectants (

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“…Surprisingly, we did not isolate Aspergillus, Aureobasidium , or Candida species, which otherwise represent dominant groups of fungi in groundwater-derived drinking water in Slovenia [ 38 ]. The reason could be their susceptibility to chlorination [ 34 , 35 , 36 , 39 , 40 ] or the mixed source of water as is common in karstic systems. We additionally successfully isolated yeasts belonging to the genera Cystobasidium, Filobasidium, Moesziomyces and Rhodotorula .…”

Section: Discussionmentioning

confidence: 99%

Water-Transmitted Fungi Are Involved in Degradation of Concrete Drinking Water Storage Tanks

Babič

Gunde‐Cimerman

2021

Microorganisms

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Global warming, globalization, industrialization, and the rapidly growing population at present increasingly affect the production of safe drinking water. In combination with sustainable bio-based or recycled materials, used for water distribution systems, these factors promote emerging pathogens, including fungi. They can proliferate in oligotrophic water systems, affect the disinfection process, degrade building materials, and cause diseases in humans. In this study, we explored fungal-based degradation of modern concrete water storage tanks and the presence of fungi in chlorinated drinking water at the entrance and exit of the tanks. The degradation potential of isolated 52 fungal strains and their growth at different oligotrophic conditions was tested in vitro. Forty percent of strains grew at extremely oligotrophic conditions, and 50% classified as aerophilic. Two-thirds of tested strains produced acids, with Penicillium strains as the best producers. Only 29.7% of the strains were able to grow at 37 °C, and none of them was isolated from drinking water at consumers’ taps. Although not yet part of the guidelines for building materials in contact with drinking water, fungi should be taken into consideration in case of visible degradation. Their number of consumers’ endpoints should be checked to exclude possible health risks for consumers.

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In vitro activity of disinfectants against Aspergillus spp

Cited by 14 publications

References 10 publications

The Best Commercial Chemical Disinfectant for Swimming Pools Environments Contaminated With Fungi

The Best Commercial Chemical Disinfectant for Swimming Pools Environments Contaminated With Fungi

Sensitivity of mycelial growth of mushroom Agrocybe semiorbicularis to different concentrations of different disinfectants

Water-Transmitted Fungi Are Involved in Degradation of Concrete Drinking Water Storage Tanks

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