Journal
HELIYON
Volume 9, Issue 6, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.heliyon.2023.e16543
Keywords
Bioactivity; Drug delivery; Essential oils; Nanoparticles; Polymers
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Essential oils, which are volatile constituents found in aromatic plants, have been widely studied for their applications in food, agriculture, pharmaceutics, and cosmetics. Aromatherapy, using essential oils to treat various diseases, has been practiced for centuries. These oils possess pharmacological properties such as anticancer, antimicrobial, and anti-inflammatory activities, and can be used as nutraceuticals, green preservatives, and functional additives in foods. However, due to their physicochemical properties, delivering essential oils as chemotherapeutics is challenging. Nanotechnology provides a unique approach for formulating essential oils into polymeric nanoparticles for controlled and sustained release, enhancing their bioactivity and therapeutic efficacy.
Essential oils are volatile constituents that give aromatic plants their characteristic odour. The application of these plant actives in food, agriculture, pharmaceutics, and cosmetics has been widely studied. Aromatherapy, a complementary therapy involving the use of essential oils to treat several diseases ranging from microbial infections to metabolic dysfunctions, has been utilised for centuries. Anticancer, antimicrobial, and anti-inflammatory activities are wellestablished among other pharmacological properties of these aromatic oils. The oils, which are composed mainly of terpene-based compounds, have also been explored as nutraceuticals, alternative green preservatives, and functional additives in foods. However, due to their physicochemical properties, viz high volatility and low aqueous solubility, essential oil delivery to target receptors were challenging when administered as chemotherapeutics. Hence, formulating essential oils with suitable excipients to enhance their delivery and bioavailability, invariably improving their bioactivity and therapeutic efficacy becomes expedient. Nanotechnology presents a unique strategy to develop a particulate delivery system for the controlled, sustained, and extended release of essential oils. In this review, we examine and summarize the trends and developments in the formulation of essential oils using polymeric nanoparticles.
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