Antimicrobial Effects of Leaves of Eucalyptus camaldulensis on Some Microbial Pathogens

Chuku, Aleruchi; Ogbonna, A. I.; Obande, Godwin Attah; Namang, Mwanret; Ahmad, Iliyasu

doi:10.9734/ejmp/2016/25759

Cited by 3 publications

(3 citation statements)

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“…Aqueous and organic extracts of E. camaldulensis have been reported to have antifungal activity (Table 4). Methanol leaves extracts showed inconsistent activity against C. albicans: in one study it was in range 50-200 mg/mL (Chuku et al, 2016), while in another it was 0.2 mg/mL (Babayi et al, 2004), indicating difference in active concentration of one thousand times. The bark methanole extract was active in concentration 0.5 mg/mL.…”

Section: Antifungal Effectmentioning

confidence: 89%

“…Crude aqueous leaf extracts show lower activity against various bacteria (range 25-50 mg/mL) (Abubakar, 2010), while bark aqueous extracts were more effective, with MIC from 0.1 mg/mL for Propionobacterium acnes to 4.0 mg/mL for P. aeruginosa (Mabona et al, 2013). The antimicrobial activity of methanol, ethanol or petroleum leaf extracts of E. camaldulensis showed significant variation; for instance, MICs against B. subtilis varied from 0.04 up to 200 mg/mL or against S. aureus 1.25-25 mg/mL (Chuku et al, 2016;Ayepola and Adeniyi, 2008). For most examined Gram negative bacteria MICs were in range 10-200 mg/mL, while P. aeruginosa was even more susceptible (MICs 10-100 mg/mL).…”

Section: Antibacterial Effectmentioning

confidence: 99%

“…Furthermore, the crude methanol leaf extracts also from Nigeria contained in addition volatile oils and balsam (gum) (Babayi et al, 2004). Similarly, the phytochemical screening of ethanol, methanol, and petroleum ether leaf extracts from Nigeria contained in moderate to high amount secondary metabolites: alkaloids, saponins, tannins, flavonoids, steroid, carbohydrates, and cardiac glycosides, and not anthraquinones (Chuku et al, 2016). Crude methanol leaf extracts of E. camaldulensis from Iran had saponins, tannins, volatile oils, and balsam (gum), while the components such as anthraquinones, hydrolysable tannin, flavonoid, alkaloid, and glycosides were not detected (Jouki and Khazaei, 2010); crude methanolic leaves extract of E. camaldulensis from India contained anthraquinones, flavonoids, saponins, and terpenoids, while alkaloids, cardiac glycosides, and tannins were not detected (Singh and Thakur, 2016).…”

Section: Eucalyptus Camaldulensis Extracts Chemical Compositionmentioning

confidence: 99%

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Antimicrobial activity of Eucalyptus camaldulensis Dehn. plant extracts and essential oils: A review

Sabo

Knežević

2019

Industrial Crops and Products

159

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A B S T R A C TEucalyptus has become one of the world's most widely planted genera and E. camaldulensis (The River Red Gum) is a plantation species in many parts of the world. The plant traditional medical application indicates great antimicrobial properties, so E. camaldulensis essential oils and plant extracts have been widely examined. Essential oil of E. camaldulensis is active against many Gram positive (0.07-1.1%) and Gram negative bacteria (0.01-3.2%). The antibacterial effect is confirmed for bark and leaf extracts (conc. from 0.08 μg/mL to 200 mg/ mL), with significant variations depending on extraction procedure. Eucalyptus camaldulensis essential oil and extracts are among the most active against bacteria when compared with those from other species of genus Eucalyptus. The most fungal model organisms are sensitive to 0.125-1.0% of E. camaldulensis essential oil. The extracts are active against C. albicans (0.2-200 mg/mL leaf extracts and 0.5 mg/mL bark extracts), and against various dermatophytes. Of particular importance is considerable the extracts' antiviral activity against animal and human viruses (0.1-50 μg/mL). Although the antiprotozoal activity of E. camaldulensis essential oil and extracts is in the order of magnitude of concentration several hundred mg/mL, it is considerable when taking into account current therapy cost, toxicity, and protozoal growing resistance. Some studies show that essential oils' and extracts' antimicrobial activity can be further potentiated in combinations with antibiotics (beta-lactams, fluorochinolones, aminoglycosides, polymyxins), antivirals (acyclovir), and extracts of other plants (e.g. Annona senegalensis; Psidium guajava). The present data confirm the river red gum considerable antimicrobial properties, which should be further examined with particular attention to the mechanisms of antimicrobial activity.limited number of antiprotozoal and antiviral agents (El-Taweel, 2015;Irwin et al., 2016). This highlights the necessity for examination of new antimicrobial agents and treatment strategies of infections caused by the mentioned microorganisms.The plant kingdom represents the source of various medicines. Indeed, since ancient times medicinal plants play an important role of health care population and could represent a significant source of new antimicrobial drugs for combating pan-and multi-drug resistant microorganisms. These new antimicrobial agents could be hidden in medicinal plant extracts and essential oils. One of the significant medicinal plants is Eucalyptus camaldulensis. Thus, this review represents the summary of previous researches data, regarding chemical composition, antimicrobial activity, and other significant effects of Eucalyptus camaldulensis.

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Section: Antifungal Effectmentioning

confidence: 89%

Section: Antibacterial Effectmentioning

confidence: 99%

Section: Eucalyptus Camaldulensis Extracts Chemical Compositionmentioning

confidence: 99%

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Antimicrobial activity of Eucalyptus camaldulensis Dehn. plant extracts and essential oils: A review

Sabo

Knežević

2019

Industrial Crops and Products

159

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An integrated methods to manage the corn ground beetle (Zabrus tenebrioides Goeze) in wheat field

Khidr,

Khalil

2024

Journal of the Saudi Society of Agricultural Sciences

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Susceptibility of multidrug resistant bacteria to lyophilized citrus limon juice extract

Adabara,

Abubakar,

Adedeji

et al. 2019

JLS

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This research was carried out to evaluate the antibacterial activity of lyophilized Citrus limon on multi-drug resistant Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Salmonella typhi, Macrococcus luteus and Clostridium difficile. Phytochemical constituent of the lyophilized citrus limon was determined using standard laboratory methods, while the agar well diffusion technique was used to evaluate the antibacterial potential of the lyophilized extract. Phytochemistry of the lyophilized Citrus limon extract revealed the presence of saponins, tannin, flavonoid, glycoside, cardiac, terpenes, anthraquinone, resins phenol, alkaloid, volatile oils and steroid. Lyophilized Citrus limon juice extract had a significant activity (p<0.05) with zone of inhibition as follows 26.00±1.4, 21.00±1.41, 24.50±0.70, 16.50±0.70, 29.50±2.12 and 20.50±0.00 mm at 40 mg/mL against Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Salmonella typhi, Macrococcus luteus and Clostridium difficile, respectively. The minimum inhibitory concentration ranges from 10-80 mg/mL and the minimum bacteriocidal concentration ranges from 80-160 mg/mL. This study provides insight on the antibacterial potential of Citrus limon juice extract against multidrug resistant bacterial pathogens. It is recommended that further studies should be conducted to explore the Citrus limon bioactive compound in the development of therapeutic drug.

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Antimicrobial Effects of Leaves of Eucalyptus camaldulensis on Some Microbial Pathogens

Cited by 3 publications

References 0 publications

Antimicrobial activity of Eucalyptus camaldulensis Dehn. plant extracts and essential oils: A review

Antimicrobial activity of Eucalyptus camaldulensis Dehn. plant extracts and essential oils: A review

An integrated methods to manage the corn ground beetle (Zabrus tenebrioides Goeze) in wheat field

Susceptibility of multidrug resistant bacteria to lyophilized citrus limon juice extract

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