Physicochemical and Antioxidant Properties of Chitosan Films Incorporated with Cinnamon Oil

Abstract

Chitosan films (CF) with cinnamon bark oil (CO) incorporated at 0% (control), 0.25%, 0.5%, and 1.0% v/v were prepared by an emulsion method. The films were characterized based on their physical properties (solubility, water vapor permeability, optical property, and microstructure) and antioxidant properties (DPPH, ABTS, and its protective effects on human erythrocytes). The results showed that the incorporation of 0.5 and 1.0% of CO into the CF significantly decreased its solubility to 22% of the control (p<0.05). The water vapor permeability of the CF-CO was significantly reduced to 40% with low concentrations of CO (0.25%) incorporated into the CF. In general, the films presented a yellow coloration and an increase in transparency with the incorporation of CO into the CF. It was also observed that the incorporation of CO increased the antioxidant activity between 6.0-fold and 14.5-fold compared to the control, and the protective capacity against erythrocyte hemolysis increased by as much as 80%.

Combined Effect of Cinnamon Essential Oil and Pomegranate Peel Extract on Antioxidant, Antibacterial and Physical Properties of Chitosan Films

“…The present result is in agreement with those of previous studies, which found that the yellow coloration in the chitosan film was intensified after addition with CEO ranged at level from 0.4% to 2% (Ojagh et al, 2010;López-Mata et al, 2015;Peng and Li, 2014). The differences in color could be ascribed to the natural yellow of essential oils (Atarés et al, 2010).…”

“…However, other studies showed that the incorporation of 0.5 and 1.0% of CEO into chitosan films did not cause significant difference compared with the control (Hosseini et al, 2009;López-Mata et al, 2015). Different effect on WVP of chitosan films enriched CEO in the present study and those reported in literature (Hosseini et al, 2009;López-Mata et al, 2015) may be attributed to chitosan composition and suppliers, plasticizer presence and film preparation. Figure 2 shows the mechanical properties of films.…”

“…The differences in color could be ascribed to the natural yellow of essential oils (Atarés et al, 2010). However, the coloration of films was significantly lower when CEO was incorporated at concentrations of 0.25% and 0.5% (López-Mata et al, 2015). Adding CEO + PPE into chitosan films also significantly affected L* (lightness/darkness), a* (redness/greenness) and b* values of the films when compared with the control ( p < 0.05), which could be attributed to the presence of polyphenols in PPE (Yuan et al, 2015).…”

Effect of Oregano and Marjoram Essential Oils on the Physical and Antimicrobial Properties of Chitosan Based Systems

“…Different data were found in a study by Torrieri et al [25], who detected a rise in the water vapour transmission rate alongside increase in the amount of rosemary essential oil in chitosan films, despite a presumed boost in the hydrophobic nature of the polymer matrix due to a partial presence of lipids. Other authors [26] reported Values are expressed as mean ± standard deviation. Different letters in the same column indicate significant differences ( < 0.05).…”

Effect of essential oil of Cymbopogon citratus in the physicochemical properties of quitosan films

“…El principal inconveniente de las películas de quitosano es su alta permeabilidad al vapor de agua; sin embargo, esto podría reducirse mediante la adición de componentes tales como los AE (Cháfer et al, 2012). Sin embargo, la adición de AE a películas podría ser limitado debido a su volatilidad y también podría inducir efectos beneficiosos o perjudiciales en las características fisicoquímicas de la película (López-Mata et al, 2015). El propósito del presente trabajo fue evaluar las propiedades fisicoquímicas y mecánicas de películas de quitosano adicionando aceite esencial de Cymbopogon citratus.…”