[article]
| Titre : |
Preparation and evaluation of b-carotene containing microemulsion |
| Type de document : |
texte imprimé |
| Auteurs : |
Xiuhan Yan, Auteur ; Zhengwu Wang, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 113-117 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Carotène
Colorants -- Stabilité
Lumière -- Diffusion
Microémulsions
Viscosité
|
| Index. décimale : |
668.1 Agents tensioactifs : savons, détergents |
| Résumé : |
Microemulsions (O/W, W/O and B.C.) formed in Tween80/ethanol/ethyl butyrate/water system were identified by phase diagram determination and conductivity measurement at 25 °C. Comparative studies were made, by means of dynamic light scattering, viscosity and UV measurements, on (1) the difference of viscosity and particle size between ?-carotene solubilized and empty microemulsions; (2) the effects of sunlight and temperature on the stability of ?-carotene both in microemulsion and in ethyl butyrate solution. It is shown that in ?-carotene loaded systems, the mean particle diameter is 82.13 nm and the size distributions were quite broad (PDI = 0.35). Smaller particles (31.75 nm) and narrower particle size distribution of droplets (PDI = 0.14) were obtained in empty microemulsion. The sizes of droplets of both ?-carotene loaded and empty ones get shrunk sharply in the first 3 days, then keep remarkable stability even for a month. ?-carotene solubilized in microemulsion is much more stable than that solubilized in ethyl butyrate solution. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Construction of pseudo-ternary phase diagrams - Solubilization measurements - Viscosity measurements - Particle size determination - Stability assay
- RESULTS AND DISCUSSION : Characterization of microemulsion - Solubilization of beta-carotene - Rheological behavior - Particle diameter - Stability of beta carotene in microemulsion |
| DOI : |
10.3139/113.110231 |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17889 |
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 50, N° 2 (03-04/2013) . - p. 113-117
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