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Open research questions in Essential Oils and Antimicrobial Activity

39 unresolved questions extracted from the limitations and future-work sections of 886 Essential Oils and Antimicrobial Activity papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Furthermore, the scented pomade produced through this process has potential as a solid perfume, which could offer addi- tional ecological advantages over conventional liquid fragrances, including reduced packaging and lower transport emissions, though these benefits warrant further investigation.

    Bio-enfleurage: a new method for microbial-based scent extraction · 2026 · DOI

  • Future studies should focus on experimental 116 Joujeh & Joujeh Int. Additionally, the potential synergistic effects of these compounds should be explored to maximize their therapeutic efficacy. th nuclear receptors, enzymes, and transporters highlights their broad pharmacological potential, paving the way for further studies on their therapeutic applications.

    In silico prediction of pharmacological and toxicological properties of terpenoids in Centaurea verutum essential oil · 2026 · DOI

  • Future research on Cymbopogon citratus should focus on addressing the current gaps in the literature, particularly the limited number of well-designed human clinical trials evaluating its pharmacological and therapeutic effects. While existing preclinical studies have demonstrated promising antimicrobial, antioxidant, anti-inflammatory, sedative, and insecticidal activitie,[18,19,1] further research is needed to confirm these effects in clinical settings and determine safety, efficacy, and appropriate their therapeutic dosages in humans. future studies should prioritize the In addition, identification and specific bioactive isolation of compounds responsible for its pharmacological effects, particularly citral, flavonoids, and phenolic acids. Understanding the individual and synergistic actions of these compounds will help clarify the mechanisms underlying the biological activities of C. citratus. This will also support the development of standardized consistent products phytopharmaceutical therapeutic outcomes. with Another important direction for future research is the standardization of extraction methods, plant parts used, and formulation techniques. Variations in extraction solvents, and harvesting stages significantly affect the phytochemical environmental growing conditions, the explore toxicity profiles, and Furthermore, more advanced pharmacological studies pharmacokinetics, should pharmacodynamics, long-term safety of C. citratus in both animal models and human subjects. Special attention should also be given to doseresponse relationships and potential drug interactions, particularly for its use in combination with conventional medications. Future research should also expand into clinical trials, particularly randomized controlled trials (RCTs), to validate its therapeutic potential in humans. These studies are essential for translating preclinical findings into evidence-based medical applications, especially for conditions involving infection, inflammation, anxiety, and oxidative stress-related diseases. Finally, since this study is a narrative review, it is limited to synthesizing available literature rather than generating experimental data. Therefore, future research should include systematic reviews and meta-analyses, as well as experimental and clinical investigations, to provide stronger and more comprehensive evidence regarding the pharmacological potential of Cymbopogon citratus.

    CYMBOPOGON CITRATUS (LEMONGRASS): A REVIEW ON ITS PHYTOCHEMISTRY AND BIOLOGICAL ACTIVITIES · 2026 · DOI

  • Future studies will focus on these aspects to better elucidate the therapeutic potential of Eucalyptus globulus essential oil Overall, the results of this study demonstrate that the Eucalyptus globulus essential oil possesses a rich phytochemical composition and exhibits multiple biological activities, including antioxidant, anti- inflammatory, antibacterial, and antibiofilm effects. A limitation of the present study is ARTICLE IN PRESS ARTICLE IN PRESS ACCEPTED MANUSCRIPT ARTICLE IN PRESS the lack of investigation into molecular mechanisms, such as membrane disruption or apoptosis-related pathways.

    Phytochemical Characterisation, antioxidant, anti-inflammatory, antibacterial, antibiofilm, anticancer properties and therapeutic potentials of Eucalyptus globulus essential oil · 2026 · DOI

  • Formulation optimization for enhanced stability and efficacy of the essential oils has not been explored; studies examining emulsification, encapsulation, or nanoparticle delivery systems for these oils are needed to improve their practical application in food preservation and topical therapeutics.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • The mechanism of action by which the identified phytoconstituents inhibit bacterial growth remains elucidated; molecular studies investigating specific protein/enzyme targets and cellular pathways disrupted by these essential oil constituents are required.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • No cell line or animal studies were conducted to assess the in vivo safety and efficacy of the essential oils from Cymbopogon citratus and Artemisia dubia, particularly for topical applications against skin infections mentioned in the conclusions.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • The study lacks compound isolation via column chromatography and NMR spectroscopy characterization, relying only on GC-MS analysis for identification of the antibacterial agents in the essential oils. This limits the precision and accuracy of determining which specific phytoconstituents are responsible for the observed antibacterial activity.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • Thujone is identified as a potent neurotoxin causing GABA receptor blockade, but the computational ADMET predictions may underestimate this specific neurotoxic risk. Comprehensive in vitro cell line studies, genetic toxicity assays, and in vivo neurotoxicity studies in animal models are needed to validate the safety profile beyond in silico predictions.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • Germacrene D exhibited a LogP value of 4.3, indicating poor ADME properties for oral administration, but the study does not propose alternative formulations or delivery routes (transdermal, inhalation) to optimize bioavailability of this compound from Cymbopogon citratus and Artemisia dubia oils.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • The in silico analysis relies solely on molecular docking without post-docking molecular dynamics simulations to assess the stability of ligand-receptor interactions between the essential oil constituents (germacrene D, thujone, etc.) and bacterial targets. This limits prediction accuracy of binding stability for the identified phytoconstituents.

    GC-MS analysis and evaluation of antibacterial activities of essential oils from Cymbopogon citratus and Artemisia dubia using in vitro and in silico approaches · 2026 · DOI

  • To translate this potential into field−relevant applications and to better connect phytochemical diversity with agroecosystem outcomes, future work should investigate the contribution and possible synergistic interactions of individual compounds, as well as formulation and delivery strategies, and assessments of selectivity and non−target effects (including crops, beneficial organisms, and soil biota).

    Chemical composition and phytotoxicity of Eucalyptus parvula (Hill & Johnson) and Melaleuca alternifolia (Cheel) essential oils grown in Tuscany, Italy · 2026 · DOI

  • However, since the profile of a recently introduced curly-leafed parsley cultivar in Egypt has not been studied, an experiment was conducted to compare three harvest dates in terms of the weight, essential oil (EO) content and yield, and the concentrations of major components in the whole herb, leaf, and stem parts.

    Essential oil content, yield, and components from the herb, leaf, and stem of curly-leafed parsley at three harvest days · 2022 · DOI

  • However, effects of Prangos ferulacea (PF), Ziziphora tenuior (ZT), Dracocephalum moldavica (DM), and Ferula gummosa (FG) on oral and dental pathogens have not been extensively evaluated due to their optimal biocompatibility and insignificant side effects.

    Comparison of antimicrobial effect of Ziziphora tenuior, Dracocephalum moldavica, Ferula gummosa, and Prangos ferulacea essential oil with chlorhexidine on Enterococcus faecalis: An in vitro study · 2018 · DOI

  • Essential oils of plant origin have been studied as alternatives for managing seed-associated pathogens in organic production systems, although their effects on seed physiological quality remain insufficiently understood.

    Essential oils of thyme, lemongrass, and rosemary in the control of <i>Aspergillus flavus</i> Link inoculated in broccoli seeds · 2026 · DOI

  • However, preventing determination of the most accurate drying method; likewise, studies on the effectiveness of their extracts against bacteria and fungi—and on the most effective post-extraction combinations—are scarce.

    Algeria’s rosmarinus officinalis l, juniperus phenicea, and peel grenadine reactions to shade and solar and convective drying methods · 2026 · DOI

  • aureus, supporting its potential as a natural agent for managing post-extraction infections, though further studies on clinical isolates, cytotoxicity, and formulations are warranted.

    Antibacterial and Antibiofilm Effects of Ziziphus mauritiana Leaf Extract Against Staphylococcus aureus · 2026 · DOI

  • These findings demonstrate that in vitro antimicrobial activity alone is insufficient to predict field performance and challenge the assumption that botanical antimicrobials effective in laboratory assays will necessarily confer disease protection when applied to plants.

    Curative Treatment of Strawberry Gray Mold Caused by <i>Botrytis cinerea</i> Using Lavender Essential Oil · 2026 · DOI

  • Although its chemical composition is known, it varies widely due to species differences as well as genotypic and environmental factors (such as climate and geography, including temperature, humidity, altitude, etc.

    Eucalyptus Essential Oils: Composition, Bioactivity, and Extraction Trends · 2026 · DOI

  • Introduction: Melicope pteleifolia leaf essential oils (EOs) are traditionally used for inflamed/infected skin, yet the impact of hydrodistillation time on volatile profiles - especially β-ocimenes - and in-vitro bioactivities has not been systematically compared.

    Effect of Hydrodistillation Time on the Composition and Bioactivities of Melicope pteleifolia Leaf Essential Oils · 2026 · DOI

  • The implications of this research suggest that Cinnamon leaves ethanol extract could be explored as a potential natural alternative to conventional antibiotics in managing biofilm-related infections, particularly those caused by multidrug-resistant Klebsiella pneumoniae.

    Effect of Cinnamon Leaf Extract (Cinnamomum Burmannii) on Inhibiting Biofilm Formation in Klebsiella Pneumoniae in Vitro · 2025 · DOI

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39 open questions have been extracted from the limitations and future-work passages of 886 Essential Oils and Antimicrobial Activity papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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