PHYSICAL, BARRIER, MECHANICAL AND MICROSTRUCTURAL PROPERTIES OF Aloe vera-GELATIN-GLYCEROL EDIBLE FILMS INCORPORATED WITH Pimenta dioica L. MERRILL ESSENTIAL OIL
Physical, barrier, mechanical and microstructural properties of an edible film based onAloe vera, gelatin-glycerol withdifferent concentrations of the essential oil of a pepper (Pimenta dioicaL. Merrill) at 0, 0.5, 1.0, and 1.5% w/w wereinvestigated. The optical properties showed low brightness and∆...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | México |
| Institución: | Instituto Tecnológico y de Estudios Superiores de Monterrey |
| Repositorio: | Redalyc-ITESM |
| OAI Identifier: | oai:redalyc.org:62049878012 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=62049878012 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería Merrill Aloe vera Edible films |
| Sumario: | Physical, barrier, mechanical and microstructural properties of an edible film based onAloe vera, gelatin-glycerol withdifferent concentrations of the essential oil of a pepper (Pimenta dioicaL. Merrill) at 0, 0.5, 1.0, and 1.5% w/w wereinvestigated. The optical properties showed low brightness and∆Eof 59.6. In terms of water vapor permeability, thevalues ranged from 2.54×10−9±0.09 to 4.49×10−9±0.3 (g m/Pa s m2), due to the effect of decreased polarity inthe structural matrix. In the case of the mechanical properties, an increase in the oil concentration significantly reducedthe tensile strength, making the material more flexible (% E=72 to 122), possibly due to the rearrangement of andthe interaction between polysaccharides, proteins and plasticizers in the matrix. This behavior was also observed in themicrostructural studies: the increased concentration of oil increased the roughness of the film (Ra=0.222 to 2.12 mV). Theresults show that addition ofPimenta dioicaoil to the film results in a film with increased WVP and resistant film qualitiesthat favor the material for use in high-moisture food coating applications. |
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