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Obtención de microcápsulas con aceites esenciales: cinnamon oil

Authors: Makdad Rhilan, Amal;

Obtención de microcápsulas con aceites esenciales: cinnamon oil

Abstract

En este trabajo se estudia la microencapsulación de aceite esencial de canela, con el objetivo de aplicarlo sobre tejidos textiles con propiedades antibacterianas y antioxidantes. La encapsulación protege el aceite frente la oxidación y la evaporación, y facilita una liberación controlada cuando el tejido entra en contacto con la piel. Primero, se prepararon emulsiones aceite en agua (O/W) utilizando diferentes tensioactivos (Span 40, Tween 20 y SDS). A partir del análisis de estabilidad y tamaño de partícula, se seleccionaron las muestras más adecuadas para seguir con el proceso de encapsulación. Se utilizó la técnica de coacervación compleja, aplicando primero una capa de quitosano y después una de goma arábiga para formar la doble membrana protectora. Una vez obtenidas las microcápsulas, se aplicaron sobre diferentes tejidos y se analizó su capacidad de retención. También se estudió la liberación del aceite en medio acuoso a temperatura corporal simulada, utilizando espectrofotometría UV-VIS y el modelo de Korsmeyer-Peppas para entender el tipo de liberación (por difusión o erosión). A partir de los datos obtenidos, se calcularon los valores de k y n, y la velocidad de liberación en cada caso. Por último, se realizaron ensayos antimicrobianos frente a Escherichia coli y Staphylococcus aureus. Los resultados mostraron que las muestras encapsuladas fueron capaces de eliminar parte de las colonias bacterianas, especialmente aquellas con mayor retención y mejor comportamiento en la liberación del principio activo. Finalmente, los resultados confirmaron que la encapsulación del aceite de canela podría ser útil para tejidos funcionales y que en un futuro se podría aplicar en textiles sanitarios, cosméticos o con funciones terapéuticas.

This work studies the microencapsulation of cinnamon essential oil with the aim of applying it to textile fabrics to provide antibacterial and antioxidant properties. Encapsulation protects the oil from oxidation and evaporation, and enables controlled release when the fabric comes into contact with the skin. First, oil-in-water (O/W) emulsions were prepared using different surfactants (Span 40, Tween 20, and SDS). Based on stability and particle size analysis, the most suitable samples were selected to proceed with the encapsulation process. The complex coacervation technique was used, applying a first layer of chitosan followed by a layer of gum arabic to form a double protective membrane. Once the microcapsules were obtained, they were applied to different fabrics and their retention capacity was analyzed. The release of the oil in an aqueous medium at simulated body temperature was also studied, using UV-VIS spectrophotometry and the Korsmeyer-Peppas model to understand the release mechanism (diffusion or erosion). Based on the data obtained, the values of k and n were calculated, as well as the release rate in each case. Finally, antimicrobial tests were carried out against Escherichia coli and Staphylococcus aureus. The results showed that the encapsulated samples were able to eliminate part of the bacterial colonies, especially those with higher retention and better performance in the release of the active compound. In conclusion, the results confirmed that the encapsulation of cinnamon oil could be useful for functional textiles and, in the future, could be applied in medical, cosmetic, or therapeutic fabrics.

Keywords

Canyella, Essences and essential oils, Cinnamon, Microencapsulació, Àrees temàtiques de la UPC::Enginyeria química, Microencapsulation, Essències

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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