info:eu-repo/semantics/article
Blend of renewable bio-based polymers for oil encapsulation: Control of the emulsion stability and scaffolds of the microcapsule by the gummy exudate of Prosopis nigra
Fecha
2020-11Registro en:
Morales, Andrés Hernán; Alanís, Ana F.; Jaime, Gloria Susana; Lamas, Daniela Lorena; Gómez, María I.; et al.; Blend of renewable bio-based polymers for oil encapsulation: Control of the emulsion stability and scaffolds of the microcapsule by the gummy exudate of Prosopis nigra; Pergamon-Elsevier Science Ltd; European Polymer Journal; 140; 11-2020
0014-3057
CONICET Digital
CONICET
Autor
Morales, Andrés Hernán
Alanís, Ana F.
Jaime, Gloria Susana
Lamas, Daniela Lorena
Gómez, María I.
Martinez, Maria Alejandra
Romero, Cintia Mariana
Resumen
This work concern with the use of a novel mesquite gum as a biopolymer alternative in desert areas of northern Argentina. The species collected was taxonomically identified as Prosopis nigra based on morphological/histological characteristics. Its gummy exudate was partially purified (PN-biopolymer) showed antioxidant activity and good emulsifying properties. The emulsions at 10% PN-biopolymer showed EI24 values > 0.50 even after a thermal shock with a relatively high oil volume fraction of 50%. pH-stability tests showed a correlation between fatty acid unsaturations and droplet size distribution.Then, the use of the PN-biopolymer-alginate blend was evaluated for fish oil encapsulation. An external gelation process was optimized showed a significant dependence of the responses evaluated (EI24 and sphericity factor) towards the interaction between both polymers and the water/oil ratio. Thus, for a fixed oil/water ratio of 0.25, the appropriate amount of both polymers allowed to obtain an EI24 of 96.1% with sphericity factors of 0.971. The PN-biopolymer played a key role in the orderly alginate crosslinking by control emulsion stability. Based on this results, this biopolymer is a renewable, sustainable, and local resource for industrial applications.