Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment
作者： Zhenglun Li , Charles H. Chen , Tongjun Liu , Vaidyanathan Mathrubootham , Eric L. Hegg
DOI: 10.1002/BIT.24793
关键词:
摘要: Copper(II) 2,2'-bipyridine (Cu(II) (bpy))-catalyzed alkaline hydrogen peroxide (AHP) pretreatment was performed on three biomass feedstocks including alkali pre-extracted switchgrass, silver birch, and a hybrid poplar cultivar. This catalytic approach found to improve the subsequent enzymatic hydrolysis of plant cell wall polysaccharides monosaccharides for all types at pH relative uncatalyzed pretreatment. The exhibited most significant improvement in with monomeric sugar release conversions more than doubling from 30% 61% glucan conversion, while lignin solubilization increased 36.6% 50.2% hemicellulose 14.9% 32.7%. It that Cu(II) (bpy)-catalyzed AHP cellulose resulted significantly depolymerization (78.4% vs. 49.4% decrease estimated degree polymerization) carboxyl content as well (fivefold increase twofold increase). Together, these results indicate represents promising route deconstruction bioenergy applications.
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