Chitosan/bentonite nanocomposites: a new approach for the protection of essential oil from Commiphora leptophloeos
DOI:
https://doi.org/10.14808/sci.plena.2025.053401Keywords:
nanocomposites, chitosan, bentoniteAbstract
The entrapment of essential oils in the lamellae of a polymer/clay nanocomposite allows, in addition to their protection, facilitation of their release. Therefore, tablets consisting of chitosan/bentonite/Commiphora leptophloeos essential oil (EO) were produced and their physical and physicochemical properties were studied. The EO, extracted by hydrodistillation, with a density of 1.0466 g mL-1, presented as the main components of Germacrone and Germacrene B, terpenes of great biological importance. The tablets, in turn, obtained by direct compression of biodegradable film fragments of the clay nanocomposite, were characterized by infrared spectroscopy (FTIR), X-ray diffractometry (XRD), hardness, friability, and disintegration. The FTIR spectrum showed interactions between the chitosan matrix, bentonite, and functional groups of the EO, while XRD suggested the formation of an intercalated nanocomposite. The tablets had a mass of 0.397 ± 0.004 g, tolerance to a maximum force of 151.21 ± 4.36 N, and a disintegration time of 11 min ± 27 s. These results indicate the successful production of chitosan/bentonite tablets containing the essential oil from C. leptophloeos, opening up space for a range of applications for these tablets containing EO.
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Copyright (c) 2025 Madalena Machado Rocha, Raquel Deodato da Silva Rodrigues, Guilherme Rodolfo S. de Araujo, Nelson Cárdenas Oliver, Joyce Kelly Marinheiro da Cunha Gonsalves

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