English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/156065
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Modification of citrus and apple pectin by power ultrasound: Effects of acid and enzymatic treatment

AutorMuñoz-Almagro, Nerea ; Montilla, Antonia ; Moreno, F. Javier ; Villamiel, Mar
Palabras claveUltrasound
Modified pectin
Fecha de publicación2017
CitaciónUltrasonics Sonochemistry 38: 807-819 (2017)
ResumenPectin-derived oligosaccharides are emerging as a new generation of functional ingredients with new or improved technological and/or bioactive properties as compared to pectin. This work addresses the impact of power ultrasound (US) on the structure of citrus and apple pectin under different experimental conditions of power, amplitude and pectin concentration in aqueous and acid media, as well as in the presence of a pectinase. Results indicated that depolymerisation of both pectin increased with time and intensity of US in aqueous media and their polydispersity decreased. In general, a higher depolymerisation was observed in pectin treated by US in the presence of nitric and citric acids than in water, and hardly any difference was detected between both types of acids. Most of the assays gave rise to high-methoxylated pectin with a degree of esterification above 50%, pointing out their suitability for potential gelling agents. Finally, US did not have any impact in assisted enzymatic hydrolysis on the degree and/or rate of depolymerisation at low and medium levels of pectin concentration (0.5 and 2%), whereas a higher diversity of pectin fragments was found at 5% which could be indicative of a more controlled depolymerisation. These findings highlight the importance of the selection of appropriate US processing conditions to diversify the applications of modified pectin, as well as the potential of US as a prospective alternative to currently used depolymerisation techniques.
Versión del editorhttps://doi.org/10.1016/j.ultsonch.2016.11.039
Aparece en las colecciones: (CIAL) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
citrusapplepectin.pdf Embargado hasta 1 de septiembre de 2019791,51 kBAdobe PDFVista previa
Visualizar/Abrir     Petición de una copia
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.