Bioactive Compounds and Therapeutic Applications of Clove Essential Oil
Summary
Clove essential oil, obtained from the dried flower buds of Syzygium aromaticum, is characterised by a high content of phenolic compounds, notably eugenol (50–90 %), alongside eugenyl acetate, β-caryophyllene and α-humulene. These constituents confer a spectrum of biological activities, including broad-spectrum antimicrobial, antioxidant, anti-inflammatory, analgesic, anticancer and neuroprotective effects. The oil’s efficacy arises from membrane disruption in pathogens, enzyme inhibition, free‐radical scavenging and modulation of inflammatory pathways. Extraction methods such as hydrodistillation, steam distillation and supercritical fluid extraction influence yield and compound profiles, while encapsulation strategies—ranging from nanoemulsions to polymeric microcapsules—enhance stability, control release and improve bioavailability. Therapeutic applications span dental care formulations, topical antiseptics, adjuncts in antimicrobial therapies, neuroprotective agents targeting oxidative stress and amyloid-β aggregation, and natural preservatives in food packaging. Preclinical studies corroborate its potential in combating bacterial, fungal, viral and parasitic infections, mitigating oxidative damage in cellular and animal models, and supporting the development of multifunctional drug-delivery systems for clinical and industrial use.
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Bioactive Compounds and Therapeutic Applications of Clove Essential Oil publication trend
The graph below shows the total number of articles in bioactive compounds and therapeutic applications of clove essential oil across all publications each year (not limited to Nature Index journals).
Technical terms
Eugenol: A phenolic compound and principal constituent of clove oil with potent antimicrobial and analgesic properties.
β-caryophyllene: A sesquiterpene in clove oil that exerts anti-inflammatory effects via cannabinoid receptor modulation.
Encapsulation: Techniques to enclose volatile compounds within carriers to enhance stability, control release and improve bioavailability.
Minimum inhibitory concentration (MIC): The lowest concentration of an antimicrobial agent required to prevent visible growth of a microorganism.
Reactive oxygen species (ROS): Highly reactive oxygen-derived molecules capable of inducing oxidative damage in cells.
Mitochondrial membrane potential (MMP): The electrochemical gradient across mitochondrial membranes crucial for ATP synthesis.
Anti-acetylcholinesterase activity: Inhibition of the enzyme acetylcholinesterase to elevate acetylcholine levels and support cholinergic transmission.
References
- Clove Essential Oil: Chemical Profile, Biological Activities, Encapsulation Strategies, and Food Applications. Antioxidants (2024).
- Phytochemical profiling and evaluation of antimicrobial activities of common culinary spices: Syzygium aromaticum (clove) and Piper nigrum (black pepper). Frontiers in Nutrition (2024).
- Multi-Targeting Neuroprotective Effects of Syzygium aromaticum Bud Extracts and Their Key Phytocompounds against Neurodegenerative Diseases. International Journal of Molecular Sciences (2023).
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