Microbial contamination in the indoor environment of tanneries in Leon, Mexico

Manufacturing environment in tanning industry has been associated with human diseases caused by biological agents. This paper reports the microbiological contamination of the indoor environment at a group of tanneries in León, Guanajuato, México. The microorganisms present in the indoor environment...

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Bibliographic Details
Published in:Indoor + built environment 2016-05, Vol.25 (3), p.524-540
Main Authors: Castellanos-Arévalo, Andrea Paola, Camarena-Pozos, David Alfonso, Castellanos-Arévalo, Diana Carolina, Rangel-Córdova, Agustín Alexander, Peña-Cabriales, Juan José, Arévalo-Rivas, Bertha, de Peña, Doralinda Guzmán, Maldonado-Vega, María
Format: Article
Language:English
Subjects:
Acinetobacter calcoaceticus
Acinetobacter johnsonii
Aspergillus
Bacillaceae
Bacteria
Candida
Candida glabrata
Candida krusei
Corynebacteriaceae
Enterobacteriaceae
Fungi
Human
Indoor environments
Microorganisms
Moraxellaceae
Nocardiopsis dassonvillei
Pantoea agglomerans
Pathogens
Penicillium
Pseudomonadaceae
Pseudomonas putida
Staphylococcus
Tanneries
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Summary:Manufacturing environment in tanning industry has been associated with human diseases caused by biological agents. This paper reports the microbiological contamination of the indoor environment at a group of tanneries in León, Guanajuato, México. The microorganisms present in the indoor environment of the tannery industry has been quantified and identified. The bacteria and fungi concentration in almost all cases exceeded the acceptable levels as dictated by Swedish standard and the limit values proposed by the American Industrial Hygiene Association. The indoor/outdoor ratio was determined, revealing poor air quality at the studied sites. This study has illustrated the presence of pathogens, hazardous to humans in indoor environments of tanneries. The identified bacteria by sequencing of 16S rDNA gene, belonged to families: Bacillaceae, Corynebacteriaceae, Enterobacteriaceae, Moraxellaceae, Nocardiopsaceae, Pseudomonadaceae, Staphylococcaceae. Some of which can be categorized as pathogens such as Acinetobacter calcoaceticus, Acinetobacter johnsonii, Nocardiopsis dassonvillei, Pantoea agglomerans, Pseudomonas putida and Staphylococcus gallinarum. In addition, Fungi genuses identified by microscopy were Aspergillus and Penicillium. The yeasts presumptively identified by ChromAgar medium were Candida krusei and Candida glabrata. Some of these identified microorganisms have been correlated with adverse human health effects, especially in individuals with immunocompromised system.
ISSN:1420-326X
1423-0070
DOI:10.1177/1420326X14564798