Thermal characterisation of oxidatively cross-linked American corn bran hemicellulose
1999
Georget, D.M.R. | Ng, A. | Smith, A.C. | Waldron, K.W.
Hemicellulose powder from American corn bran (Zea mays L), substantially a feruloylated arabinoxylan polysaccharide, can be converted with peroxidase and hydrogen peroxide under controlled conditions to form thermostable biogels. Previously it has been shown that gel formation involved the oxidative coupling of ferulic acid to form a series of ferulic-acid dimers. In the present study, differential scanning calorimetry showed that the effect of such cross-linking was to elevate the glass transition temperature (Tg) which also shifted to lower temperatures with increasing water content.
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