Encapsulation and controlled release of phycocyanin during the in vitro digestion using polysaccharide-added double emulsions (W1/O/W2)
Phycocyanin could be a potential substitute for synthetic food coloring due to its health-related properties. However, this protein is easily degraded by light, temperature or pH. Double emulsions have proven to be good systems to encapsulate and protect hydrophilic compounds such as phycocyanin. Mo...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10459.1/83381 |
| Acceso en línea: | https://doi.org/10.1016/j.foostr.2021.100249 http://hdl.handle.net/10459.1/83381 |
| Access Level: | acceso abierto |
| Palabra clave: | Polysaccharides W1/O/W2 emulsions Phycocyanin Bioaccessibility Digestibility |
| Sumario: | Phycocyanin could be a potential substitute for synthetic food coloring due to its health-related properties. However, this protein is easily degraded by light, temperature or pH. Double emulsions have proven to be good systems to encapsulate and protect hydrophilic compounds such as phycocyanin. Moreover, the addition of polysaccharides to the outer aqueous phase (W2) of these emulsions seems to improve their stability, although the impact on their digestive fate needs to be further studied. The aim of this study was to evaluate the effect of increasing the viscosity of W2 by adding arabic gum, pectin or sodium alginate at different concentrations (0%, 0.5%, 1%, 1.5% or 2%) on the physical properties and digestibility of emulsions, and on phycocyanin bioaccessibility. Results showed an efficient phycocyanin encapsulation in the inner aqueous phase (W1) of the emulsions containing sodium alginate and pectin at 1.5-2%. During the digestion, the use of all polysaccharides at 2% prevented the phycocyanin release into the gastric phase, its degradation during the intestinal phase and improved lipid digestibility. However, sodium alginate showed more noticeable effects, followed by pectin and arabic gum. Therefore, sodium alginate at concentrations 1.5-2% seems to be the most suitable polysaccharide for improving encapsulation efficiency, lipid digestibility and protecting phycocyanin during the gastrointestinal digestion. |
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