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Molecules 2013, 18(5), 5531-5542; doi:10.3390/molecules18055531
Article

Water Extractable Arabinoxylan Aerogels Prepared by Supercritical CO2 Drying

1
, 1,* , 2
, 2
, 1
, 1
 and 3
1 Laboratorio de Biopolímeros, CTAOA, Centro de Investigación en Alimentación y Desarrollo, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora 83000, Mexico 2 Centro de Investigación en Materiales Avanzados S.C. Miguel de Cervantes 120, Chihuahua, Chih., CP 31109, Mexico 3 Laboratorio de Biotecnología, CTAOV, Centro de Investigación en Alimentación y Desarrollo, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora 83000, Mexico
* Author to whom correspondence should be addressed.
Received: 5 February 2013 / Revised: 6 May 2013 / Accepted: 7 May 2013 / Published: 14 May 2013
(This article belongs to the Section Metabolites)
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Abstract

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).
Keywords: ferulated arabinoxylans; supercritical drying; microstructure; texture; rehydration ferulated arabinoxylans; supercritical drying; microstructure; texture; rehydration
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Marquez-Escalante, J.; Carvajal-Millan, E.; Miki-Yoshida, M.; Alvarez-Contreras, L.; Toledo-Guillén, A.R.; Lizardi-Mendoza, J.; Rascón-Chu, A. Water Extractable Arabinoxylan Aerogels Prepared by Supercritical CO2 Drying. Molecules 2013, 18, 5531-5542.

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