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. 2022 Jan 26;15(3):966.
doi: 10.3390/ma15030966.

Evaluation of the Antimicrobial Effect of Graphene Oxide Fiber on Fish Bacteria for Application in Aquaculture Systems

Ji Hyun Lee  1 , Heejoun Yoo  2 , Yu Jin Ahn  3 , Hyoung Jun Kim  4 , Se Ryun Kwon  1   5
Affiliations

Evaluation of the Antimicrobial Effect of Graphene Oxide Fiber on Fish Bacteria for Application in Aquaculture Systems

Ji Hyun Lee et al. Materials (Basel). .

Abstract

The growing importance of the domestic aquaculture industry has led not only to its continuous development and expansion but also to an increase in the production of wastewater containing pathogenic microorganisms and antibiotic-resistant bacteria. As the existing water purification facilities have a high initial cost of construction, operation, and maintenance, it is necessary to develop an economical solution. Graphene oxide (GO) is a carbon-based nanomaterial that is easy to manufacture, inexpensive and has excellent antimicrobial properties. In this study, the antimicrobial effect of GO polyester fibers on seven species of fish pathogenic bacteria was analyzed to evaluate their effectiveness in water treatment systems and related products. As a result of incubating GO polyester fibers with seven types of fish pathogenic bacteria for 1, 6, and 12 h, there was no antimicrobial effect in Vibrio harveyi, V. scopthalmi, and Edwardsiella tarda. In contrast, GO fibers showed antimicrobial effects of more than 99% against A. hydrophila, S. parauberis, S. iniae, and P. piscicola, suggesting the potential use of GO fibers in water treatment systems.

Keywords: fish bacterial disease; graphene oxide; graphene oxide polyester fiber; water treatment.

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Conflict of interest statement

The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

Figures

Figure 1
Figure 1
Analysis of the graphene oxide by (a) X-ray photoelectron spectroscopy (XPS) and (b) scanning electron microscope (SEM).
Figure 2
Figure 2
The line profile measured from the AFM image and its thickness distribution. (a) the AFM image, (b) thickness distribution of graphene oxide, (c) the height distribution of graphene oxide.
Figure 3
Figure 3
Graphene oxide polyester fiber (a) and its cross-sectional shape (b).
Figure 4
Figure 4
Growth of Aeromonas hydrophila on TSA plates incubated with graphene oxide polyester fiber for 1, 6, and 12 h. (a) GO fiber, (b) control.
Figure 5
Figure 5
Growth of Streptococcus parauberis on TSA plates incubated with graphene oxide polyester fiber for 1, 6 and 12 h. (a) GO fiber, (b) control.
See this image and copyright information in PMC

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