Publication Date:
2021-05-19
Description:
In this study, the antibacterial effects of essential oil extracted from 4 medicinal plants, (Thymus
deansis, Satureja bachtiarica, Cuminus cyminam and Myrtus communis) carvacrol, tymol,
florfenicol and tetracycline against three pathogenic bacteria (Aeromonas hydrophila, Yersinia
ruckeri and Lactococcus garvieae) were evaluated. Minimum inhibitory concentration (MIC) and
minimum bactericidal concentrations (MBC) of the essential oils were evaluated after preparation
of serial dilution. Inhibition zone were also determined on Muller Hinton agar medium. According
to the results, the largest inhibition zone was observed from S. bachtiarica and C. cyminam essential
oils against A. hydrophila, Y. ruckeri and L. garvieae. The obtained results showed different MICs
and MBCs for different bacteria; however, in most cases the essential oils were more effective than
tetracycline. Tymol, florfenicol and S. bachtiarica essential oil demonstrated the highest inhibitory
and bactericidal effects against A. hydrophila, Y. ruckeri and L. garvieae, respectively. The MIC
and MBC of tymol against A. hydrophila were 6.3 and 12.5 µg ml-1
, respectively. The MIC and
MBC of florfenicol against L. garvieae were 3.125 and 6.25 and of S. bachtiarica essential oil
against Y. ruckeri were 6.25 and 12.5 µg ml-1
, respectively. It can be concluded that the sensitivity
of the bacteria studied to the essential oils are different. However, considering the antimicrobial
effects of some essential oils, it is necessary to evaluate their beneficial effects in prevention and
treatment of bacterial diseases in fish.
Description:
Published
Keywords:
Antibacterial
;
Antibacterial effects
;
Aeromonas hydrophila
;
Yersinia ruckeri
;
Lactococcus garvieae
;
Cuminus cyminam
;
Myrtus communis
;
Plant
;
Medicinal
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.55-64
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