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Background: In recent years, the use of medicinal plants has increased significantly. Essential oils are one of the most important secondary metabolites in plants with promising potentials to promote health. Paying attention to the quality and effectiveness of medicinal plant products is important. Use of free essential oils due to volatility, low stability, poor solubility in water and low bioavailability, limit both their use and effectiveness. The most important tool to increase the quality of essential oil is the use of nanoparticles as carriers. This study aimed to investigate the nanoencapsulation of essential oils of medicinal plants and its effect on increasing the stability of essential oils and improving the quality of drug delivery systems. Method: In the present study, the data of scientific research articles have been used to investigate the use of nanoparticles in increasing the effectiveness of the essential oils. Findings: Drug-carrier nanoparticles include various materials such as nano polymers, dendrimers, etc. that can have different morphology and sizes depending on their synthesis method. Technology of nanoencapsulation of essential oils is used to increase stability, purposefulness and control the release time of essential oil in the human. One of the advantages of targeted drug delivery is the accurate and intelligent accumulation of essential oil as a drug at the target site, thus increasing the stability and pharmacological effects of the essential oil on the organs in the human. Conclusion: Nanocapsules containing essential oils of medicinal plants have significantly increased the effectiveness of essential oils in medical applications.

Keywords: Nanotechnology, Essential Oil, Medicinal Plants, Nanoencapsulation, Drug Delivery

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