Formation of Microcapsules of Pullulan by Emulsion Template Mechanism: Evaluation as Vitamin C Delivery Systems
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Le résumé fourni par la source
Pullulan is a polysaccharide that has attracted the attention of scientists in recent times as a former of edible films. On the other hand, its use for the preparation of hydrogels needs more study, as well as the formation of pullulan microcapsules as active ingredient release systems for the food industry. Due to the slow gelation kinetics of pullulan with sodium trimetaphosphate (STMP), capsules cannot be formed through the conventional method of dropping into a solution of the gelling agent, as with other polysaccharides, since the pullulan chains migrate to the medium before the capsules can form by gelation. Pullulan microcapsules have been obtained by using inverse water-in-oil emulsions as templates. The emulsion that acts as a template has been characterized by monitoring its stability and by optical microscopy, and the size of the emulsion droplets has been correlated with the size of the microcapsules obtained, demonstrating that it is a good technique for their production. Although some flocs of droplets form, these remain dispersed during the gelation process and two capsule size distributions are obtained: those of the non-flocculated droplets and the flocculated droplets. The microcapsules have been evaluated as vitamin C release systems, showing zero-order release kinetics for acidic pH and Fickian mechanism for neutral pH. On the other hand, the microcapsules offer good protection of vitamin C against oxidation during an evaluation period of 14 days.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Formation of Microcapsules of Pullulan by Emulsion Template Mechanism: Evaluation as Vitamin C Delivery Systems
- Date Crossref
- 21/05/2024
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Universitat de Barcelona pays non établi dans la noticeUniversité ou école supérieure
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Consejo Superior de Investigaciones Científicas pays non établi dans la noticeOrganisme public
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Biomedical Research Networking Center in Bioengineering pays non établi dans la noticeInstitution
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Institute of Advanced Chemistry of Catalonia pays non établi dans la noticeStructure de recherche
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Faculty of Chemistry Chemical Engineering and Analytical Chemistry Department pays non établi dans la noticeUniversité ou école supérieure
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University of Barcelona Nutrition and Food Safety Research Institute pays non établi dans la noticeUniversité ou école supérieure
Universitat de Barcelona, Consejo Superior de Investigaciones Científicas et Biomedical Research Networking Center in Bioengineering, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.