Indoor and outdoor airborne bacteria in child day-care centers in Edirne City (Turkey), seasonal distribution and influence of meteorological factors

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dc.authoridAsan, Ahmet/0000-0002-4132-3848
dc.authoridKarabiyik, Halide/0000-0002-1778-2200
dc.contributor.authorAydogdu, Halide
dc.contributor.authorAsan, Ahmet
dc.contributor.authorOtkun, Muserref Tatman
dc.date.accessioned2025-01-27T20:38:58Z
dc.date.available2025-01-27T20:38:58Z
dc.date.issued2010
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis paper presents information about airborne mesophilic bacteria in the indoor and outdoor air of child day-care centers (CDCCs) in the city of Edirne, Turkey. Air samples were collected using the Petri plate gravitational settling method from the indoor and outdoor air of CDCCs. Counts of airborne bacteria were measured as colony forming units (CFU) collected by gravity onto Brain Heart Infusion Agar plates (with 5% sheep blood). Samples were taken monthly over a period of 12 months between January and December 2004. A total of 3,120 bacteria colonies were counted on 192 Petri plates. Four groups of culturable bacteria were identified: Gram-positive cocci, Gram-positive bacilli, endospore-forming Gram-positive bacilli, and Gram-negative bacteria. Airborne Gram-positive bacteria were the most abundant at more than 95% of the measured population. While Gram-positive cocci were more common in indoor environments, Gram-positive bacilli were more dominant in outdoor air. Bacteria commonly isolated from CDCCs were identified at a genus level. Staphylococcus (39.16%), Bacillus (18.46%), Corynebacterium (16.25%), and Micrococcus (7.21%) were dominant among the genera identified in the present study. The dominant genera identified in the day-care centers were Staphylococcus, Micrococcus, and Corynebacterium for indoor air and Bacillus, Corynebacterium, and Staphylococcus for outdoor air. Staphylococcus, Streptococcus, Bacillus, and Corynebacterium genera were found in samples from every month. Bacterial colony counts were compared by sampling location (indoors and outdoors), seasons, and meteorological factors. We found negative correlations between the monthly total outdoor bacterial counts and the sampling day's average relative humidity and average rainfall, and the monthly average rainfall. Fluctuations in bacterial counts in different seasons were observed.
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK)
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK) supported first author Halide Aydogdu during her PhD education as a scholar student. We would like to thank TUBITAK for financial support. We would also like to thank Ebru Yavuz for statistical analyses. In addition, the present study is a part of the PhD thesis of Halide Aydogdu, the first author. The first part (about airborne fungi) of the PhD thesis of Halide Aydogdu was published in Environmental Monitoring and Assessment, 147: 423-444, 2008.
dc.identifier.doi10.1007/s10661-009-0874-0
dc.identifier.endpage66
dc.identifier.issn0167-6369
dc.identifier.issn1573-2959
dc.identifier.issue1-4
dc.identifier.pmid19404760
dc.identifier.scopus2-s2.0-77952289232
dc.identifier.scopusqualityQ2
dc.identifier.startpage53
dc.identifier.urihttps://doi.org/10.1007/s10661-009-0874-0
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23819
dc.identifier.volume164
dc.identifier.wosWOS:000276655700006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofEnvironmental Monitoring and Assessment
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectAirborne bacteria
dc.subjectChild day-care centers
dc.subjectIndoor-outdoor air
dc.subjectMeteorological parameters
dc.subjectBiomass
dc.titleIndoor and outdoor airborne bacteria in child day-care centers in Edirne City (Turkey), seasonal distribution and influence of meteorological factors
dc.typeArticle

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