Airborne molds and mycotoxins associated with handling of corn silage and oilseed cakes in agricultural environment

Lanier, Caroline; Richard, Estelle; Heutte, Natacha; Picquet, Rachel; Bouchart, Valérie; Garon, David

doi:10.1016/j.atmosenv.2010.02.040

Cited by 45 publications

(20 citation statements)

References 32 publications

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“…This cytotoxicity is usually related to mycotoxins produced by pathogenic strains (Hedayati et al 2007;Gauthier et al 2012;Sudini et al 2015). However, the presence of toxic strains, especially in the air of a municipal landfill, has not been yet reported, except contaminated air in biowaste facilities or farming environment (Fischer et al 1999(Fischer et al , 2000Lanier et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Fungal air contamination in distinct sites within a municipal landfill area

Frączek

Kozdrój

Górny

et al. 2017

Int. J. Environ. Sci. Technol.

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Municipal wastes collected in landfills are a significant source of air contamination and frequently characterize by elevated concentrations of different fungi. Posing a serious health threat to landfill workers and local residents, the fungal aerosol has to be monitored with respect to its quantity and quality. In this study, concentrations of airborne fungi, their particle size distribution, species composition and the presence of cytotoxic strains of Aspergillus fumigatus were assessed in different sites within the landfill area. The quantitative and qualitative changes in the fungal aerosol were determined with respect to a season and landfill activity level (i.e. exploitation or standstill periods). Within the landfill area, particular sites were grouped with regard to airborne fungi concentrations and similarities in species composition. The qualitative analysis indicated that 43 species were shared during both sampling times, and only nine species were characteristic for the standstill period. Among fungal isolates, 21 strains of A. fumigatus revealed cytotoxic activity expressed at different levels, depending on the fungal extract concentrations used in the MTT assay. The results suggested that exposure (especially in summer) to small airborne particles, containing distinct species, may occur not only in the active sector but also in close vicinity to the landfill. Hence, microbial monitoring of the landfill and surrounding area should be carried out taking into account both quantitative aspect supplemented by size distribution analysis and qualitative features, especially of those strains possessing cytotoxic activity.

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Section: Introductionmentioning

confidence: 99%

Fungal air contamination in distinct sites within a municipal landfill area

Frączek

Kozdrój

Górny

et al. 2017

Int. J. Environ. Sci. Technol.

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“…Various factors could influence air contamination. Indeed, some practices or housing equipment may favor microorganism development: the kind of geographic area (urban or rural; Lanier et al, 2010), the lack of ventilation (Bornehag et al, 2004), and the presence of plants (Bessot et al, 1997) or pets (Gehring et al, 2001;Rocchi et al, 2015) would be linked to higher concentrations of microorganisms. Among all the variables examined in this study, none demonstrated an clear effect on air concentrations.…”

Section: Discussionmentioning

confidence: 99%

Microbiological consequences of indoor composting

et al. 2015

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Recycling of organic waste appeals to more and more people. The aim of this study was to evaluate the microbiological contamination around organic waste bins at three distances over a 12-month period. Contamination near the customary trash of control households was evaluated at the beginning to ensure that there is no recruitment bias. Air samples using the MAS 100 impactor were carried out in 38 dwellings that do household waste composting and in 10 dwellings of controls. Collection of particles by CIP 10 rotating cup sampler and dust samples collected by electrostatic dust collector cloths were acquired in dwellings that do household waste composting. Samples were analyzed by culture and by real-time quantitative PCR. Information about dwelling characteristics and inhabitant practices was obtained by a standardized questionnaire. The genera most often isolated were Penicillium, Aspergillus, Cladosporium and Streptomyces. Near the organic waste bins, bioaerosol samples showed an increase of Acarus siro (P = 0.001). Sedimented dust analyses highlighted an increase of A. siro, Wallemia sebi, Aspergillus versicolor, and Cladosporium sphaerospermum concentrations after a 12-month survey compared to the beginning. Composting favors microorganism development over time, but does not seem to have an effect on the bioaerosol levels and the surface microbiota beyond 0.5 m from the waste bin.

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“…Workers in several activity sectors are exposed to organic dust that contains different bacteria and fungi, as well as their components such as mycotoxins, endotoxins and glucans. High exposure to organic dust containing mycotoxins, secondary toxic metabolites produced by fungi, can occur during the development of several working routine activities, such as storage work, loading, handling, or milling contaminated materials (e.g., grain, waste, and feed) in different types of industries (e.g., brewing, bakeries), and others such as caring for animals in animal husbandry settings [1][2][3][4][5][6][7][8]. Despite this occupational exposure has been demonstrated in previous research work [9][10][11][12][13][14][15][16][17][18][19], exposure assessment is not routinely performed and mycotoxins are still not recognized as an occupational risk factor present in several workplaces [20].…”

Section: Exposure To Mycotoxins In Occupational Environmentsmentioning

confidence: 99%

Occupational Exposure to Mycotoxins—Different Sampling Strategies Telling a Common Story Regarding Occupational Studies Performed in Portugal (2012–2020)

Viegas

Martins

et al. 2020

Toxins

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In occupational settings where exposure to organic dust occurs (e.g., intensive animal production, waste management, farming and many others) workers can also be exposed to mycotoxins. However, recognizing exposure to mycotoxins in workplace environments does not happen commonly and, consequently, remains as a not identified occupational risk factor. In the last decade, work developed in different occupational settings, using different sampling approaches reported that occupational exposure to mycotoxins occurs and it’s of upmost importance to be seen as an occupational concern that needs to be tackled. This paper intends to discuss the several possibilities available for assessing and characterizing the occupational exposure to mycotoxins through the description of the advantages and limitations of the different sampling strategies. Overviewing the approaches and the main achievements used in several field campaigns developed in Portugal, the knowledge obtained will be used to support the identification of the main aspects to consider when designing new occupational studies. The need for additional research work will also be discussed where new directions to follow will be debated.

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Airborne molds and mycotoxins associated with handling of corn silage and oilseed cakes in agricultural environment

Cited by 45 publications

References 32 publications

Fungal air contamination in distinct sites within a municipal landfill area

Fungal air contamination in distinct sites within a municipal landfill area

Microbiological consequences of indoor composting

Occupational Exposure to Mycotoxins—Different Sampling Strategies Telling a Common Story Regarding Occupational Studies Performed in Portugal (2012–2020)

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