Water Extractable Arabinoxylan Aerogels Prepared by Supercritical CO2 Drying

Water Extractable Arabinoxylan Aerogels Prepared by Supercritical CO2 Drying

Water extractable arabinoxylan (WEAX) aerogels were prepared by extracting the solvent from the alcogels (WEAX hydrogels with an alcohol as the solvent) with carbon dioxide under supercritical conditions. WEAX aerogels were characterized using scanning electron microscopy and adsorption and desorpti...

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Bibliographic Details
Main Authors: Agustín Rascón-Chu, Jaime Lizardi-Mendoza, Alma Rosa Toledo-Guillén, Lorena Alvarez-Contreras, Mario Miki-Yoshida, Elizabeth Carvajal-Millan, Jorge Marquez-Escalante
Format: Article
Language:English
Published: MDPI AG 2013-05-01
Series:Molecules
Subjects:
ferulated arabinoxylans
supercritical drying
microstructure
texture
rehydration
Online Access:http://www.mdpi.com/1420-3049/18/5/5531
Description
Summary:Water extractable arabinoxylan (WEAX) aerogels were prepared by extracting the solvent from the alcogels (WEAX hydrogels with an alcohol as the solvent) with carbon dioxide under supercritical conditions. WEAX aerogels were characterized using scanning electron microscopy and adsorption and desorption nitrogen isotherms. The micrographs indicate a heterogeneous porous network structure in WEAX aerogel. Adsorption/desorption nitrogen isotherms of this material were type IV, which confirm that this material possess a mesoporous structure. WEAX aerogels rehydration capability was evaluated and the water absorption mechanism was determined. The WEAX aerogels water absorption mechanism was non-Fickian (n = 0.54).
ISSN:1420-3049

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