INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Ascorbic Acid Encapsulation in Hydrophobic Silica Xerogel
M.REVUELTA; M. B. FERNÁNDEZ VAN RAAP M.B.; P. MENDOZA ZÉLIS; F.H. SÁNCHEZ; G. CASTRO
Conferencia; Food Technology and Biotechnology or in Advances in Bioprocesses in Food Industries; 2010
Self-assembled hybrid organo-silica sol-gel materials are rapidly expanding for new and novel applications. The microporous solid silica matrix was used as carrier for the controlled release of Ascorbic Acid (AA), selected as molecule cargo model. One step synthesis procedure was optimised for preparation of silicamolecule composites by using tetraethoxysilane and methyltrimethoxysilane as precursors. The hydrophobic silica xerogel matrices were characterized by Fourier transformed infrared spectroscopy (FTIR) and X-ray diffraction. Specific surface area and porosity parameters were determinated by Brunauer-Emmet-Teller (BET) technique and the matrix surface morphology by Scanning Electron Microscopy (SEM). The observed release pattern could be interesting for the development of AA-fortified food and to be used in food packaging.