Systems, compositions, and/or methods for depolymerizing cellulose and/or starch
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United States of America Patent
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Nov 20, 2012
Grant Date -
Dec 9, 2010
app pub date -
May 1, 2008
filing date -
May 7, 2007
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Abstract
Methods for depolymerizing polysaccharides are disclosed. In certain exemplary methods, polysaccharides having a first average molecular weight can be reacted with hydroxyl free radicals to produce polysaccharides having a second average molecular weight lower than the first average molecular weight. The hydroxyl free radicals can be formed by interaction of an oxidant with a catalyst comprising a polydentate ligand complexed with a metal ion. In certain exemplary embodiments, the oxidant can be hydrogen peroxide, and the catalyst can be iron methylglycine diacetate or iron-2,3,4,5,6 pentahydroxyhexanoate.
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