Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging
The effect on the physical, mechanical, and antibacterial properties of films composed of alginate-chitosan with the incorporation of oregano (EOO) or thyme (EOT) essential oils was evaluated. These films showed a thickness between 37.7 and 38.2 µm, with no significant differences for essential oil...
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MDPI AG
2025-01-01
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| Series: | Foods |
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| author | Carla Guzmán-Pincheira Arash Moeini Patricia E. Oliveira Diana Abril Yeni A. Paredes-Padilla Sergio Benavides-Valenzuela |
| author_facet | Carla Guzmán-Pincheira Arash Moeini Patricia E. Oliveira Diana Abril Yeni A. Paredes-Padilla Sergio Benavides-Valenzuela |
| author_sort | Carla Guzmán-Pincheira |
| collection | DOAJ |
| description | The effect on the physical, mechanical, and antibacterial properties of films composed of alginate-chitosan with the incorporation of oregano (EOO) or thyme (EOT) essential oils was evaluated. These films showed a thickness between 37.7 and 38.2 µm, with no significant differences for essential oil content. Water vapor permeability decreased from 4.03 (oil-free film) to 1.65 (g/msPa) × 10<sup>−9</sup> in 3% EO. Mechanical properties reflected a reduction in tensile strength (<i>TS</i>) from 73 (oil-free films) to values between 34 and 38 MPa with 3% EO, while elongation (<i>E</i>%) increased from 4.8% to 10.4–11.8%. Regarding antibacterial capacity, as the concentration of essential oil increases, the antibacterial capacity also increases. On average, the increase from 1.0% to 3.0% of EOO increased the antimicrobial capacity against Gram-negative and Gram-positive bacteria. EOO outperformed EOT against <i>E. coli</i> and <i>L. monocytogenes</i>. In addition, films with 2–3% EOT showed a significant dark yellow color compared to the control. These results suggest that films with the addition of oregano and thyme essential oils can be promising for food packaging applications with the ability to improve food safety and increase product shelf life by achieving functional packaging characteristics. |
| format | Article |
| id | doaj-art-ea52879b96c345c8b265f0791c7e8552 |
| institution | Kabale University |
| issn | 2304-8158 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj-art-ea52879b96c345c8b265f0791c7e85522025-01-24T13:33:02ZengMDPI AGFoods2304-81582025-01-0114225610.3390/foods14020256Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food PackagingCarla Guzmán-Pincheira0Arash Moeini1Patricia E. Oliveira2Diana Abril3Yeni A. Paredes-Padilla4Sergio Benavides-Valenzuela5Escuela de Nutrición y Dietética, Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastián, Concepción 4030000, ChileResearch Group of Fluid Dynamics, Brewing and Beverage Technology, TUM School of Life Sciences, Technical University of Munich, 85354 Freising, GermanyDepartamento de Ingeniería de Procesos Industriales, Núcleo de Investigación en Bioproductos y Materiales Avanzados, Universidad Católica de Temuco, Temuco 4810399, ChileDepartamento de Biología y Química, Facultad de Ciencias Básicas, Universidad del Maule, Talca 3460000, ChileEscuela de Nutrición y Dietética, Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastián, Concepción 4030000, ChileEscuela de Nutrición y Dietética, Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastián, Concepción 4030000, ChileThe effect on the physical, mechanical, and antibacterial properties of films composed of alginate-chitosan with the incorporation of oregano (EOO) or thyme (EOT) essential oils was evaluated. These films showed a thickness between 37.7 and 38.2 µm, with no significant differences for essential oil content. Water vapor permeability decreased from 4.03 (oil-free film) to 1.65 (g/msPa) × 10<sup>−9</sup> in 3% EO. Mechanical properties reflected a reduction in tensile strength (<i>TS</i>) from 73 (oil-free films) to values between 34 and 38 MPa with 3% EO, while elongation (<i>E</i>%) increased from 4.8% to 10.4–11.8%. Regarding antibacterial capacity, as the concentration of essential oil increases, the antibacterial capacity also increases. On average, the increase from 1.0% to 3.0% of EOO increased the antimicrobial capacity against Gram-negative and Gram-positive bacteria. EOO outperformed EOT against <i>E. coli</i> and <i>L. monocytogenes</i>. In addition, films with 2–3% EOT showed a significant dark yellow color compared to the control. These results suggest that films with the addition of oregano and thyme essential oils can be promising for food packaging applications with the ability to improve food safety and increase product shelf life by achieving functional packaging characteristics.https://www.mdpi.com/2304-8158/14/2/256edible filmsbioactive filmschitosanalginateoregano oilthyme oil |
| spellingShingle | Carla Guzmán-Pincheira Arash Moeini Patricia E. Oliveira Diana Abril Yeni A. Paredes-Padilla Sergio Benavides-Valenzuela Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging Foods edible films bioactive films chitosan alginate oregano oil thyme oil |
| title | Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging |
| title_full | Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging |
| title_fullStr | Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging |
| title_full_unstemmed | Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging |
| title_short | Development of Alginate-Chitosan Bioactive Films Containing Essential Oils for Use in Food Packaging |
| title_sort | development of alginate chitosan bioactive films containing essential oils for use in food packaging |
| topic | edible films bioactive films chitosan alginate oregano oil thyme oil |
| url | https://www.mdpi.com/2304-8158/14/2/256 |
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