| Dilute sulfuric acid pretreatment of transgenic switchgrass for sugar production. | |
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MedLine Citation:
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PMID: 22154585 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Conventional Alamo switchgrass and its transgenic counterparts with reduced/modified lignin were subjected to dilute sulfuric acid pretreatment for improved sugar production. At 150°C, the effects of acid concentration (0.75%, 1%, 1.25%) and residence time (5, 10, 20, 30min) on sugar productions in pretreatment and enzymatic hydrolysis were investigated, with the optimal pretreatment conditions determined for each switchgrass genotype based on total sugar yield and the amounts of sugar degradation products generated during the pretreatment. The results show that genetic engineering, although did not cause an appreciable lignin reduction, resulted in a substantial increase in the ratio of acid soluble lignin:acid insoluble lignin, which led to considerably increased sugar productions in both pretreatment and enzymatic hydrolysis. At an elevated threshold concentration of combined 5-hydroxyfuranmethal and furfural (2.0g/L), the overall carbohydrate conversions of conventional switchgrass and its transgenic counterparts, 10/9-40 and 11/5-47, reached 75.9%, 82.6%, and 82.2%, respectively. |
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Authors:
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Xu Zhou; Jiele Xu; Ziyu Wang; Jay J Cheng; Ruyu Li; Rongda Qu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-20 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-12-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Biological and Agricultural Engineering, North Carolina State University, Raleigh, NC 27695-7625, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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