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Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production

BACKGROUND: The C4 perennial grass Miscanthus giganteus has proved to be a promising bio-energy crop. However, the biomass recalcitrance is a major challenge in biofuel production. Effective pretreatment is necessary for achieving a high efficiency in converting the crop to fermentable sugars, and s...

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Detalles Bibliográficos
Autores principales: Li, Hong-Qiang, Li, Cheng-Lan, Sang, Tao, Xu, Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664608/
https://www.ncbi.nlm.nih.gov/pubmed/23663476
http://dx.doi.org/10.1186/1754-6834-6-76
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author Li, Hong-Qiang
Li, Cheng-Lan
Sang, Tao
Xu, Jian
author_facet Li, Hong-Qiang
Li, Cheng-Lan
Sang, Tao
Xu, Jian
author_sort Li, Hong-Qiang
collection PubMed
description BACKGROUND: The C4 perennial grass Miscanthus giganteus has proved to be a promising bio-energy crop. However, the biomass recalcitrance is a major challenge in biofuel production. Effective pretreatment is necessary for achieving a high efficiency in converting the crop to fermentable sugars, and subsequently biofuels and other valued products. RESULTS: Miscanthus lutarioriparious was pretreated with a liquid hot water (LHW) reactor. Between the pretreatment severity (PS) of 2.56-4.71, the solid recovery was reduced; cellulose recovery remained nearly unchanged; and the Klason lignin content was slightly increased which was mainly due to the dissolving of hemicellulose and the production of a small amount of pseudo-lignin. The result shows that a LHW PS of 4.71 could completely degrade the hemicellulose in Miscanthus. Hemicellulose removal dislodged the enzymatic barrier of cellulose, and the ethanol conversion of 98.27% was obtained. CONCLUSIONS: Our study demonstrated that LHW served as an effective pretreatment in case that Miscanthus lutarioriparious was used for ethanol production by simultaneous saccharification and fermentation. The combination and the pretreatment method of Miscanthus feedstock holds a great potential for biofuel production.
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spelling pubmed-36646082013-06-04 Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production Li, Hong-Qiang Li, Cheng-Lan Sang, Tao Xu, Jian Biotechnol Biofuels Research BACKGROUND: The C4 perennial grass Miscanthus giganteus has proved to be a promising bio-energy crop. However, the biomass recalcitrance is a major challenge in biofuel production. Effective pretreatment is necessary for achieving a high efficiency in converting the crop to fermentable sugars, and subsequently biofuels and other valued products. RESULTS: Miscanthus lutarioriparious was pretreated with a liquid hot water (LHW) reactor. Between the pretreatment severity (PS) of 2.56-4.71, the solid recovery was reduced; cellulose recovery remained nearly unchanged; and the Klason lignin content was slightly increased which was mainly due to the dissolving of hemicellulose and the production of a small amount of pseudo-lignin. The result shows that a LHW PS of 4.71 could completely degrade the hemicellulose in Miscanthus. Hemicellulose removal dislodged the enzymatic barrier of cellulose, and the ethanol conversion of 98.27% was obtained. CONCLUSIONS: Our study demonstrated that LHW served as an effective pretreatment in case that Miscanthus lutarioriparious was used for ethanol production by simultaneous saccharification and fermentation. The combination and the pretreatment method of Miscanthus feedstock holds a great potential for biofuel production. BioMed Central 2013-05-10 /pmc/articles/PMC3664608/ /pubmed/23663476 http://dx.doi.org/10.1186/1754-6834-6-76 Text en Copyright © 2013 Li et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Li, Hong-Qiang
Li, Cheng-Lan
Sang, Tao
Xu, Jian
Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production
title Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production
title_full Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production
title_fullStr Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production
title_full_unstemmed Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production
title_short Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production
title_sort pretreatment on miscanthus lutarioriparious by liquid hot water for efficient ethanol production
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664608/
https://www.ncbi.nlm.nih.gov/pubmed/23663476
http://dx.doi.org/10.1186/1754-6834-6-76
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