Microencapsulation of gallic acid in chitosan, β-cyclodextrin and xanthan
| Autor: | Josiane Kuhn Rutz, Caroline Dellinghausen Borges, Cleonice Gonçalves da Rosa, Rui Carlos Zambiazi, Roseane Farias D’Avila, Michael Ramos Nunes, Edilson Valmir Benvenutti, Suzane Rickes da Luz |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Chromatography Cyclodextrin Scanning electron microscope technology industry and agriculture carbohydrates (lipids) Chitosan chemistry.chemical_compound Differential scanning calorimetry chemistry Gallic acid Fourier transform infrared spectroscopy Spectroscopy Agronomy and Crop Science |
| Zdroj: | Industrial Crops and Products. 46:138-146 |
| ISSN: | 0926-6690 |
| DOI: | 10.1016/j.indcrop.2012.12.053 |
| Popis: | The microencapsulation of gallic acid (GA) with chitosan (C), β-cyclodextrin (β-CDS) or xanthan (X) was prepared by the lyophilization method. The encapsulation was verified by Fourier transform infrared spectroscopy, UV–visible spectroscopy, scanning electron microscopy, differential scanning calorimetry and thermogravimetric analysis. Both the encapsulation efficiency and the antioxidative activity were evaluated. According to our results, the gallic acid was encapsulated by lyophilization in matrices of chitosan, β-cyclodextrin and xanthan. The encapsulated gallic acid showed no loss of antioxidant capacity and different characteristics from the pure gallic acid confirming the techniques used. With the chitosan matrix, a higher encapsulation efficiency, and capsules with characteristic shape were obtained. |
| Databáze: | OpenAIRE |
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