Isolation and identification of microorganisms causing water-based paint and wall paint destruction

Tran Thi Thanh Van, Bui Van Cuong, Cao Thi Hong, Nguyen Trung Huy, Vu Quoc Thai, Trinh Quang Dung, Nguyen Thi Xuyen, Vo Thi Kieu Anh, Nguyen Van `Trang, Tran Dai Lam
Author affiliations

Authors

  • Tran Thi Thanh Van Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Bui Van Cuong Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Cao Thi Hong Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Nguyen Trung Huy Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Vu Quoc Thai Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Trinh Quang Dung Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Nguyen Thi Xuyen Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Vo Thi Kieu Anh Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Nguyen Van `Trang Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam
  • Tran Dai Lam Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/2525-2518/16672

Keywords:

bacteria, biocorrosion, biodegradation, paint destruction, mold

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 (+).

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Published

30-12-2022

How to Cite

[1]
T. T. T. Van, “Isolation and identification of microorganisms causing water-based paint and wall paint destruction”, Vietnam J. Sci. Technol., vol. 60, no. 6, pp. 1005–1013, Dec. 2022.

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