Water Extractable Arabinoxylan Aerogels Prepared by Supercritical CO2 Drying

Molecules

Jorge Marquez-Escalante²  Elizabeth Carvajal-Millan²  Mario Miki-Yoshida¹  Lorena Alvarez-Contreras¹  Alma Rosa Toledo-Guillén²  Jaime Lizardi-Mendoza² 

[1] Centro de Investigación en Materiales Avanzados S.C. Miguel de Cervantes 120, Chihuahua, Chih., CP 31109, Mexico; E-Mails:;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; E-Mails:

关键词: ferulated arabinoxylans;    supercritical drying;    microstructure;    texture;    rehydration;   

DOI  :  10.3390/molecules18055531

来源: mdpi

【 摘 要 】

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).

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.