View Item
- xmlui.general.dspace_homeCentros e Institutos de InvestigaciónCIA. Centro de Investigaciones de AgroindustriaInstituto de Tecnología de AlimentosArtículos científicosxmlui.ArtifactBrowser.ItemViewer.trail
- DSpace Home
- Centros e Institutos de Investigación
- CIA. Centro de Investigaciones de Agroindustria
- Instituto de Tecnología de Alimentos
- Artículos científicos
- View Item
High methoxyl pectin–methyl cellulose films with antioxidant activity at a functional food interface
Abstract
The effect of using increasing proportions of methylcellulose (MC) for the development of glycerol plasticized films based on high methoxyl pectin (HMP) (30:70, 50:50 and 70:30 w/w HMP:MC) and carrying l-(+)-ascorbic acid (AA) was studied with the purpose of achieving higher stability of AA and localized antioxidant activity at food interfaces. MC and 30:70 HMP:MC systems could not be casted. The shelf-life of the other AA-active films was assessed by
[ver mas...]
The effect of using increasing proportions of methylcellulose (MC) for the development of glycerol plasticized films based on high methoxyl pectin (HMP) (30:70, 50:50 and 70:30 w/w HMP:MC) and carrying l-(+)-ascorbic acid (AA) was studied with the purpose of achieving higher stability of AA and localized antioxidant activity at food interfaces. MC and 30:70 HMP:MC systems could not be casted. The shelf-life of the other AA-active films was assessed by storage at 25 °C, constant relative humidity (RH: 33.3%, 57.7% and 75.2%) and vacuum conditions. The rate constant for AA hydrolysis increased with the RH and, hence, with water mobility. Browning and AA degradation rates were directly related. When stored at 75.2% RH, both decreased as MC proportion increased. Compared to HMP film, the highest proportion of MC (50:50 HMP:MC) showed the highest AA stabilization under vacuum and greater performance under air atmosphere. They also developed localized antioxidant activity preserving the tocopherol content of walnut oil.
[Cerrar]
Author
Perez, Carolina Daiana;
De'Nobili, Maria Dolores;
Rizzo, Sergio Anibal;
Gerschenson, Lia Noemi;
Descalzo, Adriana Maria;
Rojas, Ana Maria Luisa;
Fuente
Journal of Food Engineering 116 (1) : 162-169 (May 2013)
Date
2013-05
ISSN
0260-8774
Formato
pdf
Tipo de documento
artículo
Palabras Claves
Derechos de acceso
Restringido
Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)