Author:
Bui Cuong,Tran Thi Thanh Van,Cao Thi Hong,Nguyen Van Trang,Nguyen Trung Huy,Vu Quoc Thai,Trinh Quoc Dung,Vo Thi Kieu Anh,Nguyen Thi Xuyen,Tran Dai Lam
Abstract
From samples of moldy wall paint and damaged water-based paint, we isolated and quantified the density of microorganisms present in the samples and determined the morphology of the isolates; thereby, identifying the genera of the bacteria and mold strains. The results showed that the density of the strains collected from the wall paint samples was much higher than that of the water-based paint samples (106 CFU/mL and 104 CFU/mL, respectively). In the wall paint samples, only mold colonies were observed, not bacterial colonies, while in the water-based paint samples both mold and bacterial colonies appeared, although mold colonies were still predominant. Based on the observation of colony formation and microscopic morphology of molds, we classified six mold strains into five genera: Aspergillus sp., Cladosporum sp., Acremoium sp., Chaetomium sp., and Fusarium sp. The frequency of strains belonging to the genus Aspergillus sp. accounted for the majority in both wall and water-based paint samples. Among the three bacterial strains isolated, we identified two bacterial strains as G (-) and one strain as G (+).
Publisher
Publishing House for Science and Technology, Vietnam Academy of Science and Technology (Publications)
Reference13 articles.
1. Ravikumar H.R., Rao S.S., Karigar C.S., - Biodegradation of paints: a current status, Ind. J. Sci. and Technol. 5 (1) (2012) 1977–1987.DOI: 10.17485/ijst/2012/v5i1.33.
2. Orehek J., Dogsa I., Tomšič M., Jamnik A., Kočar D., Stopar D., - Structural investigation of carboxymethyl cellulose biodeterioration by Bacillus subtilis subsp. subtilis NCIB 3610, Int. Biodeter.&Biodegrade. 77 (2013) DOI:10–17.10.1016/j.ibiod.2012.10.007.
3. Obidi O.F., Aboaba O.O., Makanjuola M.S., Nwachukwu S.C.U., - Microbial evaluation and deterioration of paints and paint-products, J. Envir.Bio. 30 (5) (2009) 835–840.
4. Obidi O., Nwachukwu S., Aboaba O., - Investigation on the Biodegradative Potential of Pseudomonas aeruginosa on Water-based Paints, Researcher, 2 (1) (2010) 57–67.
5. Giacomucci L., Toja F., Sanmartín P., Toniolo L., Prieto B., Villa F., Cappitelli F., - Degradation of nitrocellulose–based paint by Desulfovibrio desulfuricans ATCC 1354, Biodegradation, 23 (2012) 705–716. DOI:10.1007/s10532-012-9546-9.