Fungal Community Associated with Sawdust of Direct Evaporative Cooler and their Health Impact in Erbil City
DOI:
https://doi.org/10.24086/cuesj.v9n1y2025.pp52-56Keywords:
water air cooler, evaporative cooler, airborne fungi, SawdustAbstract
Evaporative coolers ECs are widely used in semi-arid regions. During operation, mashies pass from outdoors to indoors through wet straws or wood shavings, and these materials act as filters of bio-aerosolized particles. The current work was conducted in Erbil city to screen the fungal community associated with sawdust in ECs and explain the health impact of the predominant genera. Three hundred fifty fungal colonies were counted belonging to 17 identifying isolates beside the sterile mycelia. The highest occurrence and frequency belong to Aspergillus spp. (O=98% and F=33.7%), followed by Cladosporium sp. (O=50% and F=20.6%). Aspergillus spp. have the highest importance value index. Three genera had a moderate incidence, namely, Mucor sp., Alternaria sp., and Penicillium sp. The predominant genera that were isolated from sawdust are common outdoor air mycobiota in the study area and are considered the most effective allergens. Indeed, all recorded genera have a potentially significant effect on human health causing several types of pulmonary disorders and involve in opportunistic infections, especially for immunocompromised patients. We concluded that ECs may act as a source and transmitter of indoor airborne fungi pollution.
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References
O. Amer, R. Boukhanouf and H. G. Ibrahim. A review of evaporative cooling technologies. International Journal Environment Science Development, vol. 6, no. 2, pp. 111-117, 2015.
K. V. Vala. Environment friendly indirect-direct type evaporative cooling technology: A review. International Journal Environment Climate Change, vol. 12, no. 10, pp. 494-503, 2022.
J. D. Johnston, A. E. Cowger and K. S. Weber. Bioaerosol and microbial exposures from residential evaporative coolers and their potential health outcomes: A review. Indoor Air, vol. 32, no. 9, p. e13082, 2022.
J. M. Macher and J. R. Girman. Multiplication of microorganisms in an evaporative air cooler and possible indoor air contamination. Environment International, vol. 16, no. 3, pp. 203-211, 1990.
J. M. Macher, J. R. Girman and L. A. Alevantis. Limited waterto- air bacterial transfer from a residential evaporative air cooler. Environment International, vol. 21, no. 6, pp. 761-764, 1995.
H. Pascholda, W. W. Lia, H. Morales and J. Walton. Laboratory study of the impact of evaporative coolers on indoor PM concentrations. Atmospheric Environment, vol. 37, no. 8, pp. 1075-1086, 2003.
A. R. Lemons, M. B. Hogan, R. A. Gault, K. Holland, E. Sobek, K. A. Olsen-Wilson, Y. Park, J. H. Park, J. K. Gu, M. L. Kashonh and B. J. Green. Microbial rRNA sequencing analysis of evaporative cooler indoor environments located in the great basin desert region of the United States. Environmental Science: Processes and Impacts, vol. 19, no. 2, pp. 101-110, 2017.
M. J. Mendell, A. G. Mirer, K. Cheung, M. Tong and J. Douwes. Respiratory and allergic health effects of dampness, mold, and dampness-related agents: A review of the epidemiologic evidence. Environment Health Perspective, vol. 119, no. 6, pp. 748-756, 2011.
Y. Y. Sio, S. L. Pang, Y. H. Say, K. F. Teh, Y. R. Wong, S. M. R. Shah, K. Reginald and F. T. Chew. Sensitization to airborne fungal allergens associates with asthma and allergic rhinitis presentation and severity in the Singaporean/Malaysian population. Mycopathologia, vol. 186, no. 5, pp. 583-588, 2021.
B. J. Green, E. R. Tovey, J. K. Sercombe, F. M. Blachere, D. H. Beezhold and D. Schmechel. Airborne fungal fragments and allergenicity. Medical Mycology, vol. 44, no. 1, pp. S245-S255, 2006.
S. M. Al-Bader. Characterization and evaluation of a fungal growth medium composed pollens powder of cattail (Typha domingensis Pers). Revista Innovaciencia, vol. 6, no. 2, pp. 1-7, 2018.
K. H. Domsch, W. Gams and T. Anderson. Compendium of Soil Fungi. 2nd ed. IHW Verlag, Eching, Germany, pp. 672, 2007.
G. S. De Hoog and J. Guarro. Atlas of Clinical Fungi. Centraalbureau Voor Schimmelcultures, Utrecht, Netherlands, 2000.
S. M. Al-Bader, A. A. Osman and S. Hussainnagad. Fungal contamination of air-conditioned air flow with special reference to antifungal activity of eight plant oil vapor against Aspergillus Niger. Journal of Physics: Conference Series, vol. 1660, no. 1, p. 012001, 2020.
S. Saleem and Z. Zefenkey. The airborne mycobiota of a dust storm in comparison with a calm climate in Erbil City-Iraq. Science Journal of University of Zakho, vol. 11, no. 1, p. 45-49, 2023.
S. M. Al-Bader, L. Q. Ismael, H. S. Ali, A. Haleem, S. Al-Tamimi and A. A. Saleh. Fungal contamination of airconditioner units in five hospitals of Erbil province-Kurdistan region/Iraq. Science Journal of University of Zakho, vol. 6, no. 4, pp. 146-149, 2018.
S. M. Al-Bader, L. Q. Ismael, H. S. Ali, A. S. Al-Tamimi and A. A. Saleh. Antifungal activity of essential oils vapors against fungi isolated from car air-conditioner filters. Medico-Legal Update, vol. 21, no. 4, pp. 301-306, 2021.
S. M. Al-Bader, A. A. Othman and S. Hussainagad. Fungal contamination of air-conditioned air flow with special reference to antifungal activity of eight plant oil vapor against Aspergillus Niger. Journal of Physics: Conference Series, vol. 1660, no. 1, p. 12001, 2020.
T. A. Rao, A. H. Shaikh and M. Ahmed. Airborne fungal flora of Karachi, Pakistan. Pakistan Journal of Botany, vol. 41, no. 3, pp. 1421-1428, 2009.
V. P. Kurup. Fungal allergens. Current Allergy and Asthma Reports, vol. 3, no. 5, pp. 416-423, 2003.
O. O. Hänninen. WHO guidelines for indoor air quality: Dampness and mold. In: Fundamentals of Mold Growth in Indoor Environments and Strategies for Healthy Living. Wageningen Academic, Netherlands, pp. 277-302, 2011.
A. Sabahat, I. A. Bhatti, M. R. Asi, H. N. Bhatti and M. A. Sheikh. Occurrence of aflatoxins in maize grains from central areas of Punjab, Pakistan. International Journal of Agriculture and Biology, vol. 12, no. 4, pp. 571-575, 2010.
K. Sarah, H. Kateriona, A. Helen and E. David. Description of Medica Fungi. 3rd ed. CutCut Digital, Australia, p. 266, 2016.
M. A. Michael, P. G. Pappas and J. R. Wingard. Invasive fungal pathogens: Current epidemiological trends. Clinical Infectious Diseases, vol. 43, no. 1, pp. S3-S14, 2006.
H. A. Mousa, S. M. Al-Bader and D. A. Hassan. Correlation between fungi isolated from burn wounds and burn care units. Burns, vol. 25, no. 2, pp. 145-147, 1999.
R. Adams, I. B. Idemudia, B. Khajiagbe and F. O. Ekhaise. Airborne microflora and aerial pollutants of poultry intensive housing systems in Edo State, Nigeria. Journal Materials and Environment. Science, vol. 13, no. 2, pp. 197-209, 2022.
Z. Liang, Y. Yu, X. Wang, W. Liao, G. Li, T and T. An. The exposure risks associated with pathogens and antibiotic resistance genes in bioaerosol from municipal landfill and surrounding area. Journal of Environmental Sciences (China), vol. 129, pp. 90-103, 2023.
D. W. Denning, B. R. O’Driscoll, C. M. Hogaboam, P. Bowyer and R. M. Niven. The link between fungi and severe asthma: A summary of the evidence. European Respiratory Journal, vol. 27, no. 3, pp. 615-626, 2006.
P. Krzyściak, M. Skóra and A. B. Macura. Atlas Grzybów Chorobotwórczych Człowieka. MedPharm Polska, Wrocław, 2011.
J. H. C. Woudenberg, J. Z. Groenewald, M. Binder and P. W. Crous. Alternaria redefined. Studies in Mycology, vol. 75, no. 1, pp. 171-212, 2013.
M. F. Gabriel, I. Postigo, C. T. Tomaz and J. Martínez. Alternaria alternata allergens: Markers of exposure, hylogeny and risk of fungi-induced respiratory allergy. Environment International, vol. 89-90, pp. 71-80, 2016.
K. M. Kang, H. K. Kim, H. S. Lee, K. E. Song, S. H. Lee, W. J. Lee and W. K. Lee. A case of Alternaria alternata keratitis isolated from corneal tissue. Korean Journal Medical Mycology, vol. 20, no. 2, pp. 27-33, 2015.
F. Bensassi, C. Gallerne, O. Sharaf El Dein, M. Rabeh Hajlaoui, H and Bacha C. Lemaire. Combined effects of alternariols mixture on human colon carcinoma cells. Toxicology Mechanisms and Methods, vol. 25, no. 1, pp. 56-62, 2015.
A. Krikštaponis. Diversity of Fungi Species in Occupational and Residential Environments and their Biological Peculiarities (Toxicity, Pathogenicity, Proteolytic, Lipolytic, and Cellulolytic Activity). Summary of Doctoral Thesis, 2000.
F. Bolookat, M. S. Hassanvand, S. Faridi, M. Hadei, M. Rahmatinia and M. Alimohammadi. Assessment of bioaerosol particle characteristics at different hospital wards and operating theaters: A case study in Tehran. MethodsX, vol. 5, pp. 1588-1596, 2018.
S. Morin-Sardin, P. Nodet, E. Coton and J. L. Jany. Mucor: A Janus-Faced fungal Genus with human health impact and industrial applications. Fungal Biology Reviews, vol. 31, no. 1, pp. 12-32, 2017.
M. I. A. Hassan and K. Voigt. Pathogenicity patterns of mucormycosis: Epidemiology, interaction with immune cells and virulence factors. Medical Mycology, vol. 57, no. S2, pp. S245-S256, 2019.
S. Al-Bader, A. A. Ahamood and M. M. Al-Hamdani. The relation between fungi isolated from higher respiratory tract of allergic and asthmatic patients, and air fungi in their residence. Rafidain Journal of Science, vol. 2, no. 24, pp. 1-12, 2013.
R. A. Sharpe, N. Bearman, C. R. Thornton, K. Husk and N. J. Osborne. Indoor fungal diversity and asthma: A meta-analysis and systematic review of risk factors. The Journal of Allergy and clinical Immunology, vol. 135, no. 1, pp. 110-122, 2015.
T. Reponen, J. Lockey, D. I. Bernstein, S. J. Vesper, L. Levin, G. K. K. Hershey, S. Zheng P. Ryan, S. A. Grinshpun, M. Villareal and G. LeMaster. Infant origins of childhood asthma associated with specific molds. Journal of Allergy and Clinical Immunology, vol. 130, no. 3, pp. 639-644.e5, 2012.
H. Y. Kek, S. B. M. Saupi, H. Tan, M. H. D. Othman, B. B. Nyakuma, P. S. Goh, W. A. H. Altowayti A. Qaid, N. H. A. Wahab, C. H. Lee, A. Lubis, S. L. Wong and K. Y. Ventilation strategies for mitigating airborne infection in healthcare facilities: A review and bibliometric analysis (1993- 2022). Energy and Buildings, vol. 295, no. 15, p. 113323, 2023.
G. Fischer and W. Dott. Relevance of airborne fungi and their secondary metabolites for environmental, occupational and indoor hygiene. Archives of Microbiology, vol. 179, no. 2, pp. 75-82, 2003.
A. A. H. Khan and S. M. Karuppayil. Fungal pollution of indoor environments and its management. Saudi Journal of Biological Sciences, vol. 19, no. 4, pp. 405-426, 2012.
P. A. Jensen, W. F. Todd, M. E. Harth, R. L. Mickelseri and D. M. O’Brien. Evaluation and control of worker exposure to fungi in a beet sugar refinery. American Industrial Hygiene Association Journal, vol. 54, no. 12, pp. 742-748, 1993.
E. U. Durugbo, A. O. Kajero, E. I. Omoregie and N. E. Oyejide. A survey of outdoor and indoor airborne fungal spores in the Redemption City, Ogun State, South-Western Nigeria. Aerobiologia, vol. 29, no. 2, pp. 201-216, 2013.
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Copyright (c) 2025 Salah M. S. Al-Bader, Zean Zefenkey, Daban K. Rashid
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