<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The antibacterial activity of lime (<italic>Citrus aurantifolia</italic>) essential oil (LEO) and limonene was tested against seven Gram-negative and nine Gram-positive fish pathogenic bacteria isolated from cultured olive flounder, <italic>Paralichthys olivaceus</italic> (Temminck &amp; Schlegel) in Korea. Limonene was >99% concentrated and LEO consisted of eleven chemical compounds including 56.22% of limonene. Disk diffusion assay, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) tests were done. LEO and limonene inhibited the growth of both Gram-negative and Gram-positive bacteria. LEO and limonene (MBC/MIC= 2-8) were both bactericidal and bacteriostatic for the strains tested. In every fish pathogenic bacteria, the inhibition zone diameter (IZD) increased in proportion to the oil concentration and the maximum effect was found at 100% (V/V) concentrations of LEO and limonene. The antibiogram pattern indicated that all the bacterial strains, excluding three strains of <italic>S. iniae</italic> (S186, S530, and S131), showed resistance to one or more antibiotics. The percentage of the relative inhibition zone diameter (RIZD %) exhibited high values at higher concentrations of all the agents. Since antibacterial activities of LEO and limonene were considerably effective against fish pathogenic bacteria, they could be used as alternatives to treat bacterial infections in aquaculture.</p></abstract>

The antibacterial activity of lime (Citrus aurantifolia) essential oil (LEO) and limonene was tested against seven Gram-negative and nine Gram-positive fish pathogenic bacteria isolated from cultured olive flounder, Paralichthys olivaceus (Temminck & Schlegel) in Korea. Limonene was >99% concentrated and LEO consisted of eleven chemical compounds including 56.22% of limonene. Disk diffusion assay, minimum inhibitory concentration (MIC), and minimum bactericidal concentration (MBC) tests were done. LEO and limonene inhibited the growth of both Gram-negative and Gram-positive bacteria. LEO and limonene (MBC/MIC= 2-8) were both bactericidal and bacteriostatic for the strains tested. In every fish pathogenic bacteria, the inhibition zone diameter (IZD) increased in proportion to the oil concentration and the maximum effect was found at 100% (V/V) concentrations of LEO and limonene. The antibiogram pattern indicated that all the bacterial strains, excluding three strains of S. iniae (S186, S530, and S131), showed resistance to one or more antibiotics. The percentage of the relative inhibition zone diameter (RIZD %) exhibited high values at higher concentrations of all the agents. Since antibacterial activities of LEO and limonene were considerably effective against fish pathogenic bacteria, they could be used as alternatives to treat bacterial infections in aquaculture.

Antibacterial activity of lime (<italic>Citrus aurantifolia</italic>) essential oil and limonene against fish pathogenic bacteria isolated from cultured olive flounder (<italic>Paralichthys olivaceus</italic>)

Veterinary Medical Center and College of Veterinary Medicine

Fisheries & Aquatic Life

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Antibacterial activity of lime () essential oil and limonene against fish pathogenic bacteria isolated from cultured olive flounder ()

The antibacterial activity of lime (Citrus aurantifolia) essential oil (LEO) and limonene was tested against seven Gram-negative and nine Gram-positive fish...

Antibacterial activity of lime (Citrus aurantifolia) essential oil and limonene against fish pathogenic bacteria isolated from cultured olive flounder (Paralichthys olivaceus)

Published Online: Aug 22, 2018

Page range: 131 - 139

Received: Oct 30, 2017

Accepted: May 29, 2018

DOI: https://doi.org/10.2478/aopf-2018-0014

Keywords
antibacterial activity, lime essential oil (LEO), limonene, fish pathogenic bacteria, olive flounder

© 2018 Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Antibacterial activity of lime (Citrus aurantifolia) essential oil and limonene against fish pathogenic bacteria isolated from cultured olive flounder (Paralichthys olivaceus)

Published Online: Aug 22, 2018

Page range: 131 - 139

Received: Oct 30, 2017

Accepted: May 29, 2018

DOI: https://doi.org/10.2478/aopf-2018-0014

Keywordsantibacterial activity, lime essential oil (LEO), limonene, fish pathogenic bacteria, olive flounder

© 2018 Archives of Polish Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
antibacterial activity, lime essential oil (LEO), limonene, fish pathogenic bacteria, olive flounder