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Molecules 2009, 14(10), 4159-4165; doi:10.3390/molecules14104159

Trametes sp. as a Source of Biopolymer Cross-Linking Agents: Laccase Induced Gelation of Ferulated Arabinoxylans

1
Facultad de Zootecnia, Universidad Autónoma de Chihuahua, Chihuahua, Chihuahua 31120, Mexico
2
Research Center for Food and Development, CIAD, A. C, DTAOV, Hermosillo, Sonora 83000, Mexico
3
Research Center for Food and Development, CIAD, A. C, DTAOA, Hermosillo, Sonora 83000, Mexico
4
Research Center for Food and Development, CIAD, A. C, DCA, Hermosillo, Sonora 83000, Mexico
*
Author to whom correspondence should be addressed.
Received: 10 September 2009 / Revised: 16 October 2009 / Accepted: 16 October 2009 / Published: 16 October 2009
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Abstract

This study examined the feasibility of using Trametes sp. grown under drought conditions to catalyze the covalent cross-linking of ferulated arabinoxylans. The rate of polymerization of ferulated arabinoxylans solutions at 0.5% (w/v) was dose dependent on the laccase concentration in the system. Above 1.2 nkat laccase/mg ferulated arabinoxylan, the rate of cross-linking reached a plateau, suggesting that the reaction reached saturation. For 2% (w/v) ferulated arabinoxylans treated with laccase (1.6 nkat/mg ferulated arabinoxylan), stable gels were formed after 4 h at 25 °C, with cross-linking contents (diferulic and triferulic acid) contents of 0.03 and 0.015 μg/mg ferulated arabinoxylan, respectively. This study demonstrated that Trametes sp. can be a source of biopolymer cross-linking enzymes like laccase.
Keywords: polysaccharide; cross-linking; ferulic acid; viscosity; gels polysaccharide; cross-linking; ferulic acid; viscosity; gels
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Castillo, A.; Rascón-Chu, A.; Vargas, G.; Carvajal-Millán, E.; Valenzuela-Soto, E.; Sotelo-Mundo, R.R.; Martínez, A.L. Trametes sp. as a Source of Biopolymer Cross-Linking Agents: Laccase Induced Gelation of Ferulated Arabinoxylans. Molecules 2009, 14, 4159-4165.

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