In vitro antibacterial activity of four nano-encapsulated herbal essential oils against three bacterial fish pathogens

2019 ◽  
Vol 50 (3) ◽  
pp. 871-875 ◽  
Author(s):  
Hosna Gholipourkanani ◽  
Nicky Buller ◽  
Alan Lymbery
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Fish Pathogens ◽  
In Vitro Antibacterial Activity

scholarly journals Evaluation of the in vitro antibacterial activity of some essential oils and their blends against Staphylococcus spp. isolated from episodes of sheep mastitis

2021 ◽  
Author(s):  
Filippo Fratini ◽  
Margherita Giusti ◽  
Simone Mancini ◽  
Francesca Pisseri ◽  
Basma Najar ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Diffusion Method ◽  
Minimal Bactericidal Concentration ◽  
Coagulase Negative Staphylococci ◽  
Disk Diffusion Method ◽  
In Vitro Antibacterial Activity ◽  
High Concentrations ◽  
Thymus Serpyllum

AbstractStaphylococcus aureus and coagulase-negative staphylococci are among the major causes of mastitis in sheep. The main goal of this research was to determine the in vitro antibacterial activity of several essential oils (EOs, n 30), then five of them were chosen and tested alone and in blends against staphylococci isolates. Five bacteria were isolated from episodes of ovine mastitis (two S. aureus and three S. xylosus). Biochemical and molecular methods were employed to identify the isolates and disk diffusion method was performed to determine their antimicrobial-resistance profile. The relative percentage of the main constituents in the tested essential oils and their blends was detected by GC-EIMS analysis. Antibacterial and bactericidal effectiveness of essential oils and blends were evaluated through minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC). All of them showed sensitivity to the used antimicrobials. The EOs with the highest antibacterial activity were those belonging to the Lamiaceae family characterized by high concentrations of thymol, carvacrol and its precursor p-cymene, together with cinnamon EO, rich in cinnamaldehyde. In terms of both MIC and MBC values, the blend composed by Thymus capitatus EO 40%, Cinnamomum zeylanicum EO 20%, Thymus serpyllum EO 20% and Satureja montana EO 20% was found to be the most effective against all the isolates. Some essential oils appear to represent, at least in vitro, a valid tool against ovine mastitis pathogens. Some blends showed a remarkable effectiveness than the single oils, highlighting a synergistic effect in relation to the phytocomplex.

scholarly journals EVALUATION OF ANTIBACTERIAL ACTIVITY OF ESSENTIAL OIL OF CINNAMOMUM ZEYLANICUM, EUGENIA CARYOPHYLLATA, AND ROSMARINUS OFFICINALIS AGAINST STREPTOCOCCUS ORALIS

2017 ◽  
Vol 10 (5) ◽  
pp. 410 ◽  
Author(s):  
Samira Hsaine ◽  
Reda Charof ◽  
Khadija Ounine
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Diffusion Method ◽  
Cinnamomum Zeylanicum ◽  
Streptococcus Oralis ◽  
In Vitro Antibacterial Activity ◽  
Broth Dilution

Objective: Streptococcus oralis plays an important role in the biofilm formation of dental plaque and the occurrence of periodontal disease. Thepresent study was conducted to evaluate in vitro antibacterial activity of three essential oils, namely, Cinnamomum zeylanicum, Eugenia caryophyllata,and Rosmarinus officinalis against S. oralis.Methods: The antibacterial activity of essential oils was investigated by diffusion method using sterile discs (or aromatograms). The minimuminhibitory concentration (MIC) of essential oils showing important antibacterial activity was measured using the broth dilution method.Results: Evaluation of the antibacterial activity of three essential oils as determined by the aromatogram technique showed that the essential oilof R. officinalis had no effect on S. oralis, while the latter was extremely sensitive to the other two essential oils, but with a higher efficiency of theessential oil of C. zeylanicum (42 mm diameter) than E. caryophyllata (20 mm diameter). Similarly, the MIC and minimum bactericidal concentration(MBC) were higher for the essential oil of C. zeylanicum than the essential oil of E. caryophyllata. The MBC/MIC ratio is of the order of 2. The essentialoils studied therefore appear to exert bactericidal activity against S. oralis.Conclusion: The findings suggest that essential oils of C. zeylanicum and E. caryophyllata may be used as an alternative to synthetic antibiotics.Keywords: Essential oil, Cinnamomum zeylanicum, Eugenia caryophyllata, Rosmarinus officinalis, Antimicrobial activity, Streptococcus oralis.

scholarly journals Plant essential oils against bacteria isolated from fish: an in vitro screening and in vivo efficacy of Lippia origanoides

2019 ◽  
Vol 49 (6) ◽  
Author(s):  
Guerino Bandeira Junior ◽  
Carine de Freitas Souza ◽  
Matheus Dellaméa Baldissera ◽  
Sharine Nunes Descovi ◽  
Bibiana Petri da Silveira ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Bacterial Infections ◽  
Cupressus Sempervirens ◽  
Therapeutic Success ◽  
Plant Essential Oils ◽  
In Vitro Antibacterial Activity ◽  
Fish Bacteria

ABSTRACT: The use of natural products, such as essential oils (EOs), is a potential novel approach to treat fish bacterial infections with a lower risk of developing resistance. There has been a number of studies reporting the activity of EOs as those obtained from the species Achyrocline satureioides, Aniba parviflora, Aniba rosaeodora, Anthemis nobilis, Conobea scoparioides, Cupressus sempervirens, Illicium verum, Lippia origanoides, and Melaleuca alternifolia against bacteria. However, there are few studies investigating the effect of these EOs against fish bacteria. Therefore, the aim of this study was to evaluate the in vitro antibacterial activity of EOs against the following fish bacteria, Aeromonas hydrophila, Citrobacter freundii, and Raoultella ornithinolytica. Additionally, the in vivo antibacterial activity of the EO L. origanoides was evaluated against experimentally induced A. hydrophila infection of silver catfish (Rhamdia quelen). The EO of L. origanoides was chosen as it showed the highest in vitro antibacterial activity, with minimum inhibitory concentrations ranging from 0.2 to 0.8 mg mL-1. This EO also presented a therapeutic success of 58.33%, on a 30 day A. hydrophila infection. Therefore, we suggested that the EO of L. origanoides may be a viable alternative as a treatment for A. hydrophila infection.

IN VITRO ANTIBACTERIAL ACTIVITY OF SOME PLANT ESSENTIAL OILS

2008 ◽  
Vol 33 (12) ◽  
pp. 8577-8590
Author(s):  
Sh. Abdel- Fattah ◽  
Y. Abo-Srea ◽  
Feryala Abu-Seif ◽  
H. Shaaban
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Plant Essential Oils ◽  
In Vitro Antibacterial Activity

Chemical composition of essential oils from different parts of Protium heptaphyllum (Aubl.) Marchand and their in vitro antibacterial activity

2018 ◽  
Vol 34 (16) ◽  
pp. 2378-2383 ◽  
Author(s):  
Rodrigo S. C. Cabral ◽  
Cassia C. F. Alves ◽  
Hellen R. F. Batista ◽  
Wendel C. Sousa ◽  
Isabela S. Abrahão ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oils ◽  
In Vitro Antibacterial Activity ◽  
Different Parts

In vitro Antibacterial Activity of Essential Oils of Croton tetradenius Baill. From the Brazilian Caatinga Biome and Its Synergistic Effect With Ciprofloxacin and Meropenem

2021 ◽  
Vol 24 (1) ◽  
pp. 12-21
Author(s):  
Ingrid Borges Siqueira ◽  
Ana Andrea Teixeira Barbosa ◽  
Sona Jain ◽  
Roberta Pereira Miranda Fernandes ◽  
Audrey Rouse Soares Tavares Silva ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Synergistic Effect ◽  
Essential Oils ◽  
Caatinga Biome ◽  
In Vitro Antibacterial Activity
Sign in / Sign up

Export Citation Format

Share Document