Chemical profile and antimicrobial potential of essential oils of Cymbopogon citratus (DC.) Stapf, Ocimum basilicum Linn and Aniba rosaeodora Ducke

Everton, Gustavo Oliveira; Júnior, Paulo Sérgio Santos; Araújo, Rebecca Jemima Pereira; Ferreira, Aline Medeiro; Gomes, Paulo Roberto Barros; Rosa, Paulo Victor Serra; Pereira, Ana Patrícia Matos; Filho, Victor Elias Mouchrek

doi:10.14808/sci.plena.2020.061502

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…In contrast, thymol, linalool, α-, and γ-terpinene evidenced the same correlation with antibiofilm activity in E. coli. Numerous studies from scientific literature reported the antibacterial and antibiofilm properties of all previously mentioned phenolic compounds [84][85][86][87][88][89][90][91][92][93][94][95].…”

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confidence: 99%

Antibacterial and Antibiofilm Effects of Different Samples of Five Commercially Available Essential Oils

Neagu

Popovici

Ionescu³

et al. 2023

Antibiotics

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Essential oils (EOs) have gained economic importance due to their biological activities, and increasing amounts are demanded everywhere. However, substantial differences between the same essential oil samples from different suppliers are reported—concerning their chemical composition and bioactivities—due to numerous companies involved in EOs production and the continuous development of online sales. The present study investigates the antibacterial and antibiofilm activities of two to four samples of five commercially available essential oils (Oregano, Eucalyptus, Rosemary, Clove, and Peppermint oils) produced by autochthonous companies. The manufacturers provided all EOs’ chemical compositions determined through GC-MS. The EOs’ bioactivities were investigated in vitro against Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa). The antibacterial and antibiofilm effects (ABE% and, respectively, ABfE%) were evaluated spectrophotometrically at 562 and 570 nm using microplate cultivation techniques. The essential oils’ calculated parameters were compared with those of three standard broad-spectrum antibiotics: Amoxicillin/Clavulanic acid, Gentamycin, and Streptomycin. The results showed that at the first dilution (D1 = 25 mg/mL), all EOs exhibited antibacterial and antibiofilm activity against all Gram-positive and Gram-negative bacteria tested, and MIC value > 25 mg/mL. Generally, both effects progressively decreased from D1 to D3. Only EOs with a considerable content of highly active metabolites revealed insignificant differences. E. coli showed the lowest susceptibility to all commercially available essential oils—15 EO samples had undetected antibacterial and antibiofilm effects at D2 and D3. Peppermint and Clove oils recorded the most significant differences regarding chemical composition and antibacterial/antibiofilm activities. All registered differences could be due to different places for harvesting the raw plant material, various technological processes through which these essential oils were obtained, the preservation conditions, and complex interactions between constituents.

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confidence: 99%

Antibacterial and Antibiofilm Effects of Different Samples of Five Commercially Available Essential Oils

Neagu

Popovici

Ionescu³

et al. 2023

Antibiotics

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Screening of Antibacterial and Antibiofilm Activities of Commercially Available Essential Oils' Different Samples in Comparison to Conventional Antibiotics

Neagu¹,

Popovici²,

Ionescu³

et al. 2023

Preprint

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Essential oils (EOs) have gained economic importance due to their biological activities, and increasing amounts are demanded everywhere. However, substantial differences between the same essential oil samples from different suppliers are reported due to numerous companies involved in EOs production and the continuous development of online sales. The present study investigates the antibacterial and antibiofilm activities of 2-4 samples of five commercially available essential oils (Oregano, Eucalyptus, Rosemary, Clove, and Peppermint oils) from different manufacturers. Their effects were evaluated in vitro on Gram-positive and Gram-negative bacteria (Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa). The antibacterial efficacy (ABE%) and antibiofilm efficacy (ABfE%) were determined spectrophotometrically at 562 and 570 nm using microplate cultivation techniques. The essential oils' calculated parameters were compared with those of three standard broad-spectrum antibiotics: Amoxicillin/Clavulanic acid (AMC), Gentamycin (GEN), and Streptomycin (STR), active on tested bacteria. The results showed that at the first dilution (D1 = 2.5 mg/mL), all essential oils (EOs) exhibited antibacterial activity against Gram-positive and Gram-negative bacteria. On S. aureus and E. coli, EOs had considerable antibacterial effects (ABE = 79.70—92.80%, respectively, 71.30 ‒ 94.00%). The highest antibacterial effects of commercially available EOs were against P. aeruginosa because all exhibited a significant antibiofilm activity. Their antibiofilm efficacy intensively decreased on E. coli and S. aureus. Generally, the samples with different manufacturers of the same EO showed similar effects. Only Clove and Peppermint oils samples displayed a higher variability associated with active metabolites' different contents, maybe due to various zones of harvesting raw material, numerous technologies involved in EOs obtaining processes, and complex interactions between components.

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Chemical Diversity and Therapeutic Effects of Essential Oils of Aniba Species from the Amazon: A Review

Trindade

Xavier

Setzer

et al. 2021

Plants

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Lauraceae families have great diversity in the world’s tropical regions and are represented mainly by aromatic shrubs and trees with significant production of essential oils (EOs). This work presents a review of the EO chemical profiles from specimens of Aniba, including their seasonal variations, geographical distributions, and biological activities in the Amazon biome. Based on the survey, 15 species were reviewed, representing 167 oil samples extracted from leaves, twig barks, and woods. Brazilian Amazon was the most representative geographic area in the number of specimens, highlighting the locations Belém, (Pará state, PA) (3 spp., 37 samples), Santarém (PA) (3 spp., 10 samples), Carajás (PA) (3 spp., 7 samples), and Manaus (Amazonas state, AM) (3 spp., 16 samples). The main compound classes identified in oils were benzenoids and phenylpropanoids, represented by 1-nitro-2-phenylethane, benzyl salicylate, benzyl benzoate and methyleugenol, along with terpenoids, especially monoterpenes and sesquiterpenes, such as linalool, α-phellandrene, β-phellandrene, β-selinene, and spathulenol. The EOs from Aniba showed considerable variation in the chemical profiles according to season and collection site. The hierarchical cluster analysis classified the samples into two main groups according to chemical composition. This review highlights its comprehensive and up-to-date information on history, conservation, traditional uses, chemosystematics, pharmacological potential of Aniba species.

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Chemical profile and antimicrobial potential of essential oils of Cymbopogon citratus (DC.) Stapf, Ocimum basilicum Linn and Aniba rosaeodora Ducke

Cited by 3 publications

References 44 publications

Antibacterial and Antibiofilm Effects of Different Samples of Five Commercially Available Essential Oils

Antibacterial and Antibiofilm Effects of Different Samples of Five Commercially Available Essential Oils

Screening of Antibacterial and Antibiofilm Activities of Commercially Available Essential Oils' Different Samples in Comparison to Conventional Antibiotics

Chemical Diversity and Therapeutic Effects of Essential Oils of Aniba Species from the Amazon: A Review

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