Essential oils composition, antibacterial and antioxidant activities of hydrodistillated extract of Eucalyptus globulus fruits

Said, Zakia Bey-Ould Si; Haddadi‐Guemghar, Hayate; Boulekbache‐Makhlouf, Lila; Rigou, Peggy; Remini, Hocine; Adjaoud, Abdenour; Khoudja, Nabyla Khaled; Madani, Khodir

doi:10.1016/j.indcrop.2016.05.018

Cited by 111 publications

(39 citation statements)

References 49 publications

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“…Other authors reported that fennel essential oil was a less effective bacterial inhibitor against Gram‐negative strains of bacteria (Cantore, Iacobellis, Marco, Capasso, & Senatore, ). Moreover, the study conducted by Bey‐Ould Si Said et al () on the antimicrobial effect of Eucalyptus globulus essential oil displayed that Staphylococcus aureus was the most sensitive strain which is consistent with the results obtained. The higher sensitivity of Gram‐positive bacteria to fennel essential oils can be explained by their outer peptidoglycan layer which was not an effective permeability barrier (Nostro, Germano, Angelo, Marino, & Cannatelli, ).…”

Section: Resultssupporting

confidence: 86%

Variation in essential oil composition and biological activities ofFoeniculum vulgareMill. populations growing widely in Tunisia

Khammassi

Loupassaki

Tazarki³

et al. 2018

J Food Biochem

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Chemical composition, antioxidant, and antimicrobial activities of essential oils from 16 wild edible Tunisian Foeniculum vulgare populations were evaluated. The essential oil yields of fennel seeds ranged from 1.2 to 5.06%. GC-MS analysis revealed the presence of 20 compounds. Except one sample, essential oils from different locations were mainly composed of phenylpropanoid and the major compound was estragole with a percentage ranging from 66.09 to 85%. The phenolic content of fennel oils varied significantly among populations which could explain the high variation in antiradical scavenging activity. Furthermore, essential oils presented antimicrobial activity against several strains. Results showed that the Gram-positive strains of bacteria were most sensitive to fennel oils. This study encourages the use of wild fennel as a potential source of natural antioxidants and antimicrobial agents and supports an assessment of this species in several application domains. Practical applicationsThe growing interest in the use of medicinal plants in food and pharmaceutical industries has led to a systematic examination of plant extracts for their biological properties. Wild fennel is one of aromatic and medicinal plant known for its biological and pharmaceutical activities. In this study, chemical composition, antioxidant, and antimicrobial activities of fennel essential oil were analyzed with a view of their industrial applications. The variations in essential oil composition and their biological activities in different populations may provide baseline data for breeding programs and large scale multiplication for commercial cultivation of the best fennel population.

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Section: Resultssupporting

confidence: 86%

Variation in essential oil composition and biological activities ofFoeniculum vulgareMill. populations growing widely in Tunisia

Khammassi

Loupassaki

Tazarki³

et al. 2018

J Food Biochem

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“…53 The results of the present study are in line with previous studies on the antibacterial properties of EOs against foodborne pathogens such as S. typhimurium, E. coli, and Listeria monocytogens. 15,54 However, complete clarity on the antibacterial mode of action of nanoparticles of chitosan and its derivatives remain elusive. Notably, some studies have speculated that the antibacterial activity of nanoparticles of CS and their derivatives are the result of cell porousness and interactions between the NH 2 group in CS and the electromagnetic charge on the cell wall of bacteria.…”

Section: Dpph Radical Scavenging Activity Assaymentioning

confidence: 99%

<p>Chitosan And N, N, N-Trimethyl Chitosan Nanoparticle Encapsulation Of <em>Ocimum Gratissimum</em> Essential Oil: Optimised Synthesis, In Vitro Release And Bioactivity</p>

Onyebuchi¹,

Kavaz²

2019

IJN

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Background: The encapsulation of plant essential oils (EOs) with polymeric materials (e.g. chitosan (CS) and N, N, N-trimethyl chitosan (TMC)) and the further reduction of the polymers into their nano sizes are gaining research interest in nanotechnology due to potential applications in medical drug delivery systems as well as the food and pharmaceutical industry. The present study reports a novel approach for the synthesis of Ocimum gratissimum essential oil (OGEO)-loaded CS and TMC nanoparticles with distinct bioactive and physiochemical properties. Methods: The OGEO-loaded CS and TMC nanoparticles were characterised using various microscopic and spectroscopic techniques. The bioactive compounds in Ocimum gratissimum methanolic extract (OG-MeOH) and EOs was evinced with gas chromatography-mass spectrometry (GC-MS). Total phenolic content (TPC) of OGEO and OG-MeOH was determined using the Folin-Ciocalteu method. The in vitro drug release kinetic pattern was ascertained by membrane dialysis, while antioxidant activity was determined by the 2,2-diphenyl-1picrylhydrozyl (DPPH) free radical scavenging method. The disc diffusion method was used for antibacterial activity evaluation, while MTT and a trypan blue dye exclusion assay were used to assess cytotoxic activity on MDA-MB-231 breast cancer cells. Results: GC-MS analysis revealed components that have not been previously reported for Ocimum gratissimum. The maximum OGEO cumulative drug release percentage in vitro was observed at pH 3 for both OGEO-loaded chitosan nanoparticles (OGEO-CSNPs) and OGEOloaded N, N, N-trimethyl chitosan nanoparticles (OGEO-TMCNPs). The antioxidant activity of OGEO-CSNPs and OGEO-TMCNPs never reached a steady state after 75 h. OGEO-TMCNPs exhibited antibacterial activity at a lower concentration for both Gram-negative and Gram-positive food pathogens. In vitro cytotoxicity revealed the increased toxicity of OGEO-TMCNPs on MDA-MB-231 breast cancer cell lines. Conclusion: OGEO-loaded CS and TMC nanoparticles were synthesised using a novel material optimisation approach. The synthesised nanoparticles have shown a promising application in the pharmaceutical and food industries.

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“…Cinnamon EO is effective against many Gram-positive and Gram-negative bacteria and it is also used in the food industry with considerable results [ 16 ]. The antibacterial activity of eucalyptus and lemongrass EOs was reported in numerous studies available in the literature [ 17 , 18 ]. On the other hand, less experimental evidence is available to demonstrate the antibacterial efficacy of verbena EO [ 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Activity of Some Essential Oils against Methicillin-Susceptible and Methicillin-Resistant Staphylococcus pseudintermedius-Associated Pyoderma in Dogs

Nocera

Mancini

Najar

et al. 2020

Animals

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This study aimed to test in vitro the antimicrobial activity of 11 essential oils (EOs) against four methicillin-resistant Staphylococcus pseudintermedius (MRSP) and four methicillin-susceptible S. pseudintermedius (MSSP) clinical isolates. The obtained findings demonstrated a clear in vitro efficacy of some tested EOs against both MRSP and MSSP strains. Particularly, modal minimum inhibitory concentration (MIC) values ranging from 1:2048 v/v for Melissa officinalis against an MSSP strain to 1:256 v/v for Cymbopogoncitratus against all MRSP strains were observed. The best results, highlighting a modal MIC value of 1:1024 v/v for all tested isolates, was provided by Cinnamomum zeylanicum. Intriguingly, Cinnamomum zeylanicum showed, in many cases, a correspondence between minimum bactericidal concentration (MBC) and MIC values, indicating that the inhibiting dose is also often bactericidal. Moreover, a mild antibacterial and bactericidal activity against both MRSP and MSSP isolates was detected for the other tested EOs. Considering the zoonotic potential of S. pseudintermedius and the increased dissemination of multidrug-resistant strains, the employment of EOs could be useful for the treatment of canine pyoderma. Since antibiotic resistance has become the most urgent issue, from the perspective of the One Health initiative, alternative therapeutic approaches are desirable to limit the use of antibiotics or to improve the efficacy of conventional therapies.

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Essential oils composition, antibacterial and antioxidant activities of hydrodistillated extract of Eucalyptus globulus fruits

Cited by 111 publications

References 49 publications

Variation in essential oil composition and biological activities ofFoeniculum vulgareMill. populations growing widely in Tunisia

Variation in essential oil composition and biological activities ofFoeniculum vulgareMill. populations growing widely in Tunisia

<p>Chitosan And N, N, N-Trimethyl Chitosan Nanoparticle Encapsulation Of <em>Ocimum Gratissimum</em> Essential Oil: Optimised Synthesis, In Vitro Release And Bioactivity</p>

Antimicrobial Activity of Some Essential Oils against Methicillin-Susceptible and Methicillin-Resistant Staphylococcus pseudintermedius-Associated Pyoderma in Dogs

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