Antibacterial activity and synergistic effects between Eucalyptus globulus leaf residues (essential oils and extracts) and antibiotics against several isolates of respiratory tract infections (Pseudomonas aeruginosa)

Pereira, Vanessa de Abreu; Días, Carla; Vasconcelos, Maria C B M De; Rosa, Eduardo; Saavedra, María José

doi:10.1016/j.indcrop.2013.09.032

Cited by 100 publications

(76 citation statements)

References 23 publications

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“…Eucalyptus genus, belonging to Myrtaceae family, comprises about 900 species and originates from Australia [16]. Many studies revealed that Eucalyptus spp.…”

Section: Introductionmentioning

confidence: 99%

Efficacy ofEucalyptus cinereaas a Source of Bioactive Compounds for Curative Biocontrol of Crown Gall Caused byAgrobacterium tumefaciensStrain B6

Kahla

Bouassida

Rezgui

et al. 2017

BioMed Research International

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This research investigated the Eucalyptus cinerea leaves efficiency in the Agrobacterium tumefaciens biocontrol, the causative agent of crown gall. GC-MS analysis of the essential oil (EO) showed that the main components were 1,8-cineole (61%) and camphene (15.13%). Thanks to its polyphenols, flavonoids, quinones, terpenoids, alkaloids, and tannins richness, the EtOAc-F exhibited the most potent antibacterial activity in vitro. Indeed, compared to the other fractions, it has the lowest MIC and MBC values of 0.312 mg/mL and 2.5 mg/mL, respectively. The GC-MS analysis of EtOAc-F confirmed its richness in antibacterial compounds including gallic acid (7.18%), shikimic acid (5.07%), and catechin (3.12%). The time-kill curve assay of EtOAc-F (2.5 mg/mL) showed a potent bactericidal effect after 20 min of direct contact with A. tumefaciens. In planta experiments, gall weights were significantly reduced when EtOAc-F was applied at 0.625 and 2.5 mg/wounds. Besides, the disease reduction rates in gall weight were 95% and 97.5%, respectively. Interestingly, no phytotoxic effect was observed since tomato seeds germinated in the presence of the different concentrations of EtOAc-F. These results suggest that EtOAc-F has a good potential to be a curative biocontrol agent for crown gall disease.

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“…Eucalyptus genus, belonging to Myrtaceae family, comprises about 900 species and originates from Australia [16]. Many studies revealed that Eucalyptus spp.…”

Section: Introductionmentioning

confidence: 99%

Efficacy ofEucalyptus cinereaas a Source of Bioactive Compounds for Curative Biocontrol of Crown Gall Caused byAgrobacterium tumefaciensStrain B6

Kahla

Bouassida

Rezgui

et al. 2017

BioMed Research International

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“…Eucalyptus is a large native genus from Australia, which belongs to the Myrtaceae family and includes nearly 900 species and subspecies (10). Eucalyptus species are well-known for their rapid growth.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Antimicrobial Activity of Eucalyptus camaldulensis Essential Oil Against the Growth of Drug-Resistant Bacteria

Asiaei

Moghimipour

Fakoor

2017

Jundishapur J Nat Pharm Prod

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Background: Due to the increasing resistance of pathogenic bacteria to common antibiotics, researchers are seeking alternative antimicrobial agents with plant origins. Objectives: The purpose of this study was to evaluate the activity of essential oil, extracted from the leaves of Eucalyptus camaldulensis, the major Eucalyptus species cultivated in Khuzestan, South of Iran, against the growth of drug-resistant bacteria. Methods: Essential oil was extracted from the leaves using the hydrodistillation method in a Clevenger apparatus. The constituents of the essential oil were determined by gas chromatography-mass spectrometry (GC-MS). Moreover, the antimicrobial activity of essential oil was assayed using the disk diffusion method. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were also determined using the macrodilution method.

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“…Eucalyptus oil, obtained by steam distillation and rectification from fresh leaves or terminal branches (Vijayan et al, 2002), is found in more than 300 species of this genus. Although the Myrtaceae family comprises about 900 species and subspecies, less than twenty have been exploited by the pharmaceutical and cosmetic industries for the production of EOs rich in 1,8-cineole (Pereira et al, 2014). Numerous studies have demonstrated the antimicrobial properties of eucalyptus oil against a wide range of bacteria (Hammer et al, 1999;Elaissia et al, 2011) and fungi (Ramezani et al, 2002;Somda et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial activity of eucalyptus essential oil against Pseudomonas in vitro and potential application in refrigerated storage of pork meat

Shao

Cao

et al. 2016

Int J of Food Sci Tech

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The objective of this study was to investigate the influence of eucalyptus essential oil (EO) on the Pseudomonas in vitro and application in the pork meat. Eucalyptus oil showed the greatest antimicrobial activity to Pseudomonas among five EOs (tea tree oil, eucalyptus oil, clove oil, mentha oil and garlic oil) in vitro. Eucalyptus oil treatment caused the increasing of membrane permeability and the modifications of ultrastructure and morphology of Pseudomonas spp. and P. aeruginosa. Treatment of refrigerated pork with eucalyptus oil led to a significant decrease P. spp. count, pH, total volatile basic nitrogen and 2-thiobarbituric acid values, as well as higher sensory scores of custom acceptance than those in control at the end of cold storage. It was conclude that eucalyptus EO is a potential alternative to chemical treatment to control the spoilage and extend the shelf life of refrigerated pork meat.

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Antibacterial activity and synergistic effects between Eucalyptus globulus leaf residues (essential oils and extracts) and antibiotics against several isolates of respiratory tract infections (Pseudomonas aeruginosa)

Cited by 100 publications

References 23 publications

Efficacy ofEucalyptus cinereaas a Source of Bioactive Compounds for Curative Biocontrol of Crown Gall Caused byAgrobacterium tumefaciensStrain B6

Efficacy ofEucalyptus cinereaas a Source of Bioactive Compounds for Curative Biocontrol of Crown Gall Caused byAgrobacterium tumefaciensStrain B6

Evaluation of Antimicrobial Activity of Eucalyptus camaldulensis Essential Oil Against the Growth of Drug-Resistant Bacteria

Antimicrobial activity of eucalyptus essential oil against Pseudomonas in vitro and potential application in refrigerated storage of pork meat

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