Chemical Composition and Antimicrobial Activities of Essential Oils of Six Species from Family Myrtaceae

Siddique, Saima; Perveen, Zahida; Nawaz, Shaista; Shahzad, Khurram; Ali, Zeeshan

doi:10.1080/0972060x.2014.935020

Cited by 27 publications

(18 citation statements)

References 16 publications

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“…Oregano AqEO content was mostly composed of carvacrol, followed by 5-10% of each para-cymene, gamma-terpinene and linalool. Carvacrol was generally found to be main constituent of oregano EO, with very good antibacterial effect [21,49]. In this study, from all the oils evaluated, thyme EO presented the lowest MIC against E. faecalis, as previously reported [49][50][51].…”

Section: Discussionsupporting

confidence: 77%

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Essential Oils as Alternatives for Root-Canal Treatment and Infection Control against Enterococcus faecalis—A Preliminary Study

et al. 2021

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Since natural alternatives are needed in dentistry for the treatment of root canal, where the standard irrigant is NaOCl with significant toxicity, the aim of the study was to assess the antibacterial properties of non-chemical root-canal irrigants (aqueous extracts of oregano, thyme, lemongrass, melaleuca and clove essential oils) against Enterococcus faecalis. For this, aqueous extracts of each essential oil (AqEO) were prepared. A solution of sodium hypochlorite (NaOCl) was used as a positive standard against which the antimicrobial effects of AqEO could be reported. The root canals of seven teeth were inoculated with 20 µL of Enterococcus faecalis ATCC29212 inoculum and incubated overnight at 37 °C. All the teeth canals were instrumented and were irrigated with the corresponding AqEO, NaOCl and saline solution, then rinsed with saline. Bacteriological samples for each canal post-instrumentation were collected with sterile paper points which were inoculated on culture media. A second processing followed the same methodology but involved only irrigation and no instrumentation. Using instrumentation, thyme and clove completely inhibited Enterococcus faecalis growth. Without instrumentation, clove and oregano AqEOs completely reduced the bacterial load as seen in direct inoculation, but bacterial growth was observed in all the samples after enrichment, except for NaOCl. Nevertheless, the turbidity of the enrichment media was lower for the samples irrigated with AqEOs than for control. In conclusion, AqEOs of thyme, oregano and clove showed a promising antibacterial effect, especially when teeth instrumentation was performed.

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Section: Discussionsupporting

confidence: 77%

“…It is used in food, medicine, agriculture and cosmetics. Named also as tea tree, it is reported to be an antimicrobial agent [20][21][22][23][24]. The major constituents are terpinene-4-ol, γ-terpinene, and α-terpinene, 1,8-cineole.…”

Section: Introductionmentioning

confidence: 99%

Essential Oils as Alternatives for Root-Canal Treatment and Infection Control against Enterococcus faecalis—A Preliminary Study

et al. 2021

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“…In the last decade, research into essential (volatile) oils has received increasing attention from both industrial and academic sectors because of the growing interest in green consumerism and the need for alternative techniques to assure the quality and safety of perishable foods [ 1 ]. The plant Melaleuca alternifolia (M. alternifolia) belongs to the Myrtaceae family [ 2 ], which is described as a scrubland species and found throughout South America, western India, and Australia [ 3 ]. The plant has been used in medicine, cosmetics, food, agriculture, and other industries [ 4 – 7 ].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Evaluation of Antioxidant and Antimicrobial Activities of Melaleuca alternifolia Essential Oil

Zhang

Guo

et al. 2018

BioMed Research International

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The in vitro antioxidant and antimicrobial activity of the essential oil from Melaleuca alternifolia (M. alternifolia) was evaluated in this report. The antioxidant potential of the essential oil from M. alternifolia was evaluated by the DPPH (2,2-diphenyl-1-picrylhydrazyl) method, thiobarbituric acid reactive species (TBARS) assay, and the hydroxyl radical scavenging activity method. The essential oil from M. alternifolia was able to reduce DPPH with an EC50 (concentration for 50% of maximal effect) of 48.35 μg/ml, inhibit the lipid peroxidation with an IC50 (50% inhibitory concentration) of 135.9 μg/ml, and eliminate hydroxyl radicals with an EC50 of 43.71 μg/ml. Antimicrobial screening, minimum inhibitory concentration, and minimum bactericidal concentration assays showed that the essential oil from M. alternifolia inhibited strongly the growth of different types of microorganisms, including Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Penicillium italicum Wehmer, and Penicillium digitatum Sacc. Thus, the essential oil of M. alternifolia possesses antioxidant and antimicrobial activity and could be suitable for use as a natural preservative ingredient in food, agriculture, and pharmaceutical industries.

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“…Melaleuca alternifolia belongs to the Myrtaceae family. 66 This plant is described as a scrubland species and can be found primarily in South America, western India and Australia. In the latter country, the plant is known as tea tree and has been used in folk medicine learned from aboriginal people.…”

Section: Melaleuca Alternifoliamentioning

confidence: 99%

Lactoferrin, chitosan and Melaleuca alternifolia —natural products that show promise in candidiasis treatment

Felipe

Júnior

Araújo

et al. 2018

Brazilian Journal of Microbiology

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The evolution of microorganisms resistant to many medicines has become a major challenge for the scientific community around the world. Motivated by the gravity of such a situation, the World Health Organization released a report in 2014 with the aim of providing updated information on this critical scenario. Among the most worrying microorganisms, species from the genus Candida have exhibited a high rate of resistance to antifungal drugs. Therefore, the objective of this review is to show that the use of natural products (extracts or isolated biomolecules), along with conventional antifungal therapy, can be a very promising strategy to overcome microbial multiresistance. Some promising alternatives are essential oils of Melaleuca alternifolia (mainly composed of terpinen-4-ol, a type of monoterpene), lactoferrin (a peptide isolated from milk) and chitosan (a copolymer from chitin). Such products have great potential to increase antifungal therapy efficacy, mitigate side effects and provide a wide range of action in antifungal therapy.

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Chemical Composition and Antimicrobial Activities of Essential Oils of Six Species from Family Myrtaceae

Cited by 27 publications

References 16 publications

Essential Oils as Alternatives for Root-Canal Treatment and Infection Control against Enterococcus faecalis—A Preliminary Study

Essential Oils as Alternatives for Root-Canal Treatment and Infection Control against Enterococcus faecalis—A Preliminary Study

In Vitro Evaluation of Antioxidant and Antimicrobial Activities of Melaleuca alternifolia Essential Oil

Lactoferrin, chitosan and Melaleuca alternifolia —natural products that show promise in candidiasis treatment

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