The peroxidase/H2O2 system as a free radical-generating agent for gelling maize bran arabinoxylans: rheological and structural properties.

The peroxidase/H2O2 system as a free radical-generating agent for gelling maize bran arabinoxylans: rheological and structural properties.
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DOI:
10.3390/molecules16108410
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发表时间:
2011-10-10
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Micard V
Micard V
中科院分区:
其他
文献类型:
--
作者:
Martínez-López AL;Carvajal-Millan E;Lizardi-Mendoza J;López-Franco YL;Rascón-Chu A;Salas-Muñoz E;Barron C;Micard V

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研究了使用过氧化物酶/H2O2 系统作为自由基生成剂的玉米麸阿拉伯木聚糖 (MBAX) 的氧化凝胶化。过氧化物酶/H2O2系统导致阿魏酸二聚体和三聚体形成作为MBAX网络中的共价交联结构。 4% (w/v) 的MBAX 凝胶的储能模量为180 Pa。MBAX 凝胶的结构参数是通过溶胀实验计算的。 MBAX 凝胶的两个交联之间的分子量 (Mc)、交联密度 (ρc) 和网格尺寸 (ζ) 分别为 49 × 103 g/mol、30 × 10−6 mol/cm3 和 193 nm。
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 (ρc) and a mesh size (ζ) of 49 × 103 g/mol, 30 × 10−6 mol/cm3 and 193 nm, respectively.
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