Carrot fiber (CF) composite films for antioxidant preservation: Particle size effect.
Carbohydr Polym
; 136: 1041-51, 2016 Jan 20.
Article
en En
| MEDLINE
| ID: mdl-26572445
The effect of particle size (53, 105 and 210 µm) of carrot fiber (CF) on their hydration properties and antioxidant capacity as well as on the performance of the CF-composite films developed with commercial low methoxyl pectin (LMP) was studied. It was determined that CF contained carotenoids and phenolics co-extracted with polysaccharides (80%), rich in pectins (15%). CF showed antioxidant activity and produced homogeneous calcium-LMP-based composites. The 53-µm-CF showed the lowest hydration capability and produced the least elastic and deformable composite film due probably to CF bridged by calcium-crosslinked LMP chains. Antioxidant activity associated to the loaded CF was found in composites. When L-(+)-ascorbic acid (AA) was also loaded, its hydrolytic stability increased with the decrease in CF-particle size, showing the lowest stability in the 0%-CF- and 210 µm-CF-LMP films. Below ≈ 250 µm, the particle size determined the hydration properties of pectin-containing CF, affecting the microstructure and water mobility in composites.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ácido Ascórbico
/
Extractos Vegetales
/
Carotenoides
/
Celulosa
/
Daucus carota
/
Antioxidantes
Idioma:
En
Revista:
Carbohydr Polym
Año:
2016
Tipo del documento:
Article
País de afiliación:
Ecuador
Pais de publicación:
Reino Unido