Volume 136, Issue 15 47300
Article

Partial removal of protein associated with arabinoxylans: Impact on the viscoelasticity, crosslinking content, and microstructure of the gels formed

Mayra A. Mendez-Encinas

Mayra A. Mendez-Encinas

Laboratory of Biopolymers, CTAOA, Research Center for Food and Development, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora, 83304 Mexico

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Elizabeth Carvajal-Millan

Corresponding Author

Elizabeth Carvajal-Millan

Laboratory of Biopolymers, CTAOA, Research Center for Food and Development, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora, 83304 Mexico

Correspondence to: E. Carvajal-Millan (E-mail: [email protected])Search for more papers by this author
Madhav P. Yadav

Madhav P. Yadav

Sustainable Biofuels and Coproducts Research Unit, Eastern Regional Research Center, Agricultural Research Service, US Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, Pennsylvania, 19038

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Yolanda L. López-Franco

Yolanda L. López-Franco

Laboratory of Biopolymers, CTAOA, Research Center for Food and Development, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora, 83304 Mexico

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Agustín Rascon-Chu

Agustín Rascon-Chu

Laboratory of Biotechnology, CTAOV, Research Center for Food and Development, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora, 83304 Mexico

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Jaime Lizardi-Mendoza

Jaime Lizardi-Mendoza

Laboratory of Biopolymers, CTAOA, Research Center for Food and Development, CIAD, A.C. Carretera a La Victoria Km. 0.6, Hermosillo, Sonora, 83304 Mexico

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Francisco Brown-Bojorquez

Francisco Brown-Bojorquez

Department of Polymers and Materials, University of Sonora, Rosales y Blvd. Luis D. Colosio, Hermosillo, Sonora, 83000 Mexico

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Erika Silva-Campa

Erika Silva-Campa

Department of Physics Research, University of Sonora, Rosales y Blvd. Luis D. Colosio, Hermosillo, Sonora, 83000 Mexico

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Martín Pedroza-Montero

Martín Pedroza-Montero

Department of Physics Research, University of Sonora, Rosales y Blvd. Luis D. Colosio, Hermosillo, Sonora, 83000 Mexico

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First published: 18 December 2018
Citations: 24

ABSTRACT

Arabinoxylans (AX) treated with protease and dialyzed (AXP) or only dialyzed (AXD) formed gels showing an increase in the elastic modulus G′ (1291 and 1419 Pa, respectively) and the ferulic acid dimers (3.34 and 3.10 μg/mg polysaccharide, respectively) and trimers (0.51 and 0.53 μg/mg polysaccharide, respectively) in comparison to AX gels (767 Pa, 0.56 and 0.12 μg/mg polysaccharide, respectively). Nevertheless, the G′ values and crosslinking contents were not different among the AXP and AXD gels, suggesting that the amount of protein removed (54%) does not affect these parameters. Confocal laser scanning microscopy analysis showed that AXP treatment promotes the homogeneity of the gels. In addition, scanning electron microscopy observations indicated that AXD and particularly AXP gels had a more compact microstructure. Thus, the partial removal of protein associated with AX does not impact the viscoelasticity and crosslinking content of the gels formed but could improve their microstructural characteristics. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47300.

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