Development of chia seed (Salvia hispanica) mucilage films plasticized with polyol mixtures: Mechanical and barrier properties
| Autor: | M. Fernanda San Martin-Gonzalez, Uriel Urbizo-Reyes, Andrea M. Liceaga, Jose Garcia-Bravo |
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| Rok vydání: | 2020 |
| Předmět: |
Chemical Phenomena
Polymers 02 engineering and technology Spectrum Analysis Raman Biochemistry Permeability 03 medical and health sciences chemistry.chemical_compound Plant Mucilage Polyol Structural Biology Plasticizers Ultimate tensile strength Glycerol Food science Salvia Molecular Biology 030304 developmental biology Mechanical Phenomena chemistry.chemical_classification 0303 health sciences Chemistry General Medicine Factorial experiment 021001 nanoscience & nanotechnology Food coating Food packaging Steam Mucilage Solubility Seeds Sorbitol 0210 nano-technology |
| Zdroj: | International journal of biological macromolecules. 163 |
| ISSN: | 1879-0003 |
| Popis: | Food packaging is one of the main contributors to the high rates of environmental contamination; therefore, interest has emerged on the use of biopolymers as alternative materials to replace conventional food packaging. Chia seed (Salvia hispanica) is recognized by having a high content of a polysaccharide called mucilage. The aim of this study was to evaluate the feasibility using of chia seed mucilage (CSM) and a polyol mixture containing glycerol and sorbitol for the development of films. CSM films with higher sorbitol content showed superior tensile strength (3.23 N/mm2) and lower water vapor permeability (1.3*10−9 g/m*s*Pa), but had poor flexibility compared to other treatments. Conversely, high glycerol content showed high elongation at break (67.55%) and solubility (22.75%), but poor water vapor permeability and tensile strength. Film formulations were optimized implementing a factorial design according to response surface methodology. Raman spectra analysis showed shifts from 854 to 872 cm−1 and 1061 to 1076 cm−1, β (CCO) modes, indicating an increase in hydrogen bonding, responsible for the high tensile strength and decreased water vapor permeability observed in this study. The optimum conditions of polyol concentration were 1.3 g of glycerol and 2.0 g of sorbitol per g of CSM. Based on these results, chia seed mucilage can successfully be used to develop biofilms with potential to be used in drug delivery and edible food coating applications. |
| Databáze: | OpenAIRE |
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