Enzymatic hydrolysis of ammonia-treated sugar beet pulp |
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Authors: | Foster Brian L Dale Bruce E Doran-Peterson Joy B |
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Institution: | (1) Department of Biology, Central Michigan University, 127 Brooks Hall, Mt. Pleasant, MI 48859;(2) Department of Chemical Engineering, Michigan State University, A 202 Engineering Building, 48824 East Lansing, MI |
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Abstract: | Sugar beet pulp is a carbohydrate-rich coproduct generated by the table sugar industry. Beet pulp has shown promise as a feedstock
for ethanol production using enzymesto hydroly zepolymeric carbohydrates and engineered bacteria to ferment sugars to ethanol.
In this study, sugar beet pulp underwent an ammonia pressurization depressurization (APD) pretreatment in which the pulp was
exploded by the sudden evaporation of ammonia in a reactor vessel. APD was found to substantially increase hydrolysis efficiency
of the cellulose component, but when hemicellulose- and pectindegrading enzymes wereadded, treated pulp hydrolysis was no
better than the untreated control. |
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Keywords: | Biomass sugar beet pulp enzyme hydrolysis ammonia pretreatment fuel alcohol |
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