Journal
MOLECULES
Volume 16, Issue 10, Pages 8410-8418Publisher
MDPI AG
DOI: 10.3390/molecules16108410
Keywords
arabinoxylan gels; free radicals; oxidative cross-linking
Funding
- Fondo Institucional SEP-CONACYT, Mexico
- Red Tematica Nanociencias y Nanotecnologia, CONACYT, Mexico [134301, 124584]
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The oxidative gelation of maize bran arabinoxylans (MBAX) using a peroxidase/H2O2 system as a free radical-generating agent was investigated. The peroxidase/H2O2 system led to the formation of dimers and trimer of ferulic acid as covalent cross-link structures in the MBAX network. MBAX gels at 4% (w/v) presented a storage modulus of 180 Pa. The structural parameters of MBAX gels were calculated from swelling experiments. MBAX gels presented a molecular weight between two cross-links (Mc), a cross-linking density (rho(c)) and a mesh size (xi) of 49 x 10(3) g/mol, 30 x 10(-6) mol/cm(3) and 193 nm, respectively.
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