Original scientific paper

Ascorbic Acid Encapsulation in Hydrophobic Silica Xerogel

Mariana V. Revuelta ; Center of Applied Biotechnology (CINDEFI), National University of La Plata (UNLP), National Research Council (CONICET), 50 Street #227, C.P. 1900 La Plata, Argentina
Marcela B. Fernández van Raap ; La Plata Physics Institute (IFLP), Department of Physics, National University of La Plata (UNLP), La Plata, Argentina
Pedro Mendoza Zélis ; La Plata Physics Institute (IFLP), Department of Physics, National University of La Plata (UNLP), La Plata, Argentina
Francisco H. Sánchez ; La Plata Physics Institute (IFLP), Department of Physics, National University of La Plata (UNLP), La Plata, Argentina
Guillermo R. Castro orcid.org/0000-0002-6187-7805 ; Center of Applied Biotechnology (CINDEFI), National University of La Plata (UNLP), National Research Council (CONICET), 50 Street #227, C.P. 1900 La Plata, Argentina

Abstract

Self-assembled hybrid organo-silica sol-gel materials are rapidly expanding for newand novel applications. The microporous solid silica matrix was used as a carrier for the controlled release of ascorbic acid (AA), selected as cargo molecule. One-step synthesis procedure was optimized for the preparation of silica–molecule composites by using tetraethoxysilane and methyltrimethoxysilane as precursors. The hydrophobic silica xerogel matrices were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. Specific surface area and porosity parameters were determined by Brunauer-Emmett-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 for use in food packaging.

Keywords

hydrophobic silica xerogel; ascorbic acid; packaging; fortified food

Hrčak ID:

71063

URI

https://hrcak.srce.hr/71063

Publication date:

10.8.2011.

Article data in other languages: croatian

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