MORPHOMETRIC CHARACTERIZATION OF SPRAY-DRIED MICROCAPSULES BEFORE AND AFTER -TOCOPHEROL EXTRACTION
Microcapsules were obtained by spray-drying of -tocopherol (AT) - in- water emulsions subjected to single and double atomization yielding single atomized microcapsules (SAM) and double atomized microcapsules (DAM) which had di erent core to wall material ratios. Micrographs of whole and AT extracted...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | México |
| Institución: | Instituto Mexicano del Petróleo |
| Repositorio: | Redalyc-IMP |
| OAI Identifier: | oai:redalyc.org:62020825013 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=62020825013 |
| Access Level: | acceso abierto |
| Palabra clave: | Ingeniería spray drying image analysis alpha tocopherol Morphometric parameters |
| Sumario: | Microcapsules were obtained by spray-drying of -tocopherol (AT) - in- water emulsions subjected to single and double atomization yielding single atomized microcapsules (SAM) and double atomized microcapsules (DAM) which had di erent core to wall material ratios. Micrographs of whole and AT extracted of SAM and DAM obtained from Environmental Scanning Electron Microscopy (ESEM) were image analyzed and the Feret diameter, projected area, perimeter, maximum perimeter, shape factor and Fractal Dimension of contour (FDc) and texture (FDt) were determined. Whole DAM presented higher FDc and FDt than SAM, while SAM presented higher FDc values for all the microcapsules and higher DFt values for the AT to wall materials ratios 1:4 after the AT extraction. Most of the microcapsules displayed significantly di erent perimeter but non- significant projected areas, whereas the extracted microcapsules tended not to show significant di erences between these two parameters. |
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