Cargando…
Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar
BACKGROUND: Pretreatment is a key step to decrease the recalcitrance of lignocelluloses and then increase the digestibility of cellulose in second-generation bioethanol production. In this study, wood chips from triploid poplar were biopretreated with white rot fungus Trametes velutina D10149. The e...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3639831/ https://www.ncbi.nlm.nih.gov/pubmed/23517540 http://dx.doi.org/10.1186/1754-6834-6-42 |
_version_ | 1782475998463262720 |
---|---|
author | Wang, Kun Yang, Haiyan Wang, Wei Sun, Run-cang |
author_facet | Wang, Kun Yang, Haiyan Wang, Wei Sun, Run-cang |
author_sort | Wang, Kun |
collection | PubMed |
description | BACKGROUND: Pretreatment is a key step to decrease the recalcitrance of lignocelluloses and then increase the digestibility of cellulose in second-generation bioethanol production. In this study, wood chips from triploid poplar were biopretreated with white rot fungus Trametes velutina D10149. The effects of incubation duration on delignification efficiency and structural modification of cellulose were comparably studied, as well as the digestibility of cellulose by simultaneous saccharification and fermentation (SSF). RESULTS: Although microbial pretreatments did not significantly introduce lignin degradation, the data from SSF exhibited higher cellulose conversion (21-75% for biopretreated samples for 4–16 weeks) as compared to the untreated poplar (18%). In spite of the essential maintain of crystallinity, the modification of lignin structure during fungal treatment undoubtedly played a key role in improving cellulose bioconversion rates. Finally, the ethanol concentration of 5.16 g/L was detected in the fermentation broth from the cellulosic sample biodegraded for 16 weeks after 24 h SSF, achieving 34.8% cellulose utilization in poplar. CONCLUSION: The potential fungal pretreatment with Trametes velutina D10149 was firstly explored in this study. It is found that the biopretreatment process had a significant effect on the digestibility of substrate probably due to the removal and unit variation of lignin, since the crystallinities of substrates were rarely changed. Additional investigation is still required especially to improve the selectivity for lignin degradation and optimize the digestibility of cellulose. |
format | Online Article Text |
id | pubmed-3639831 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-36398312013-05-06 Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar Wang, Kun Yang, Haiyan Wang, Wei Sun, Run-cang Biotechnol Biofuels Research BACKGROUND: Pretreatment is a key step to decrease the recalcitrance of lignocelluloses and then increase the digestibility of cellulose in second-generation bioethanol production. In this study, wood chips from triploid poplar were biopretreated with white rot fungus Trametes velutina D10149. The effects of incubation duration on delignification efficiency and structural modification of cellulose were comparably studied, as well as the digestibility of cellulose by simultaneous saccharification and fermentation (SSF). RESULTS: Although microbial pretreatments did not significantly introduce lignin degradation, the data from SSF exhibited higher cellulose conversion (21-75% for biopretreated samples for 4–16 weeks) as compared to the untreated poplar (18%). In spite of the essential maintain of crystallinity, the modification of lignin structure during fungal treatment undoubtedly played a key role in improving cellulose bioconversion rates. Finally, the ethanol concentration of 5.16 g/L was detected in the fermentation broth from the cellulosic sample biodegraded for 16 weeks after 24 h SSF, achieving 34.8% cellulose utilization in poplar. CONCLUSION: The potential fungal pretreatment with Trametes velutina D10149 was firstly explored in this study. It is found that the biopretreatment process had a significant effect on the digestibility of substrate probably due to the removal and unit variation of lignin, since the crystallinities of substrates were rarely changed. Additional investigation is still required especially to improve the selectivity for lignin degradation and optimize the digestibility of cellulose. BioMed Central 2013-03-21 /pmc/articles/PMC3639831/ /pubmed/23517540 http://dx.doi.org/10.1186/1754-6834-6-42 Text en Copyright © 2013 Wang 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 Wang, Kun Yang, Haiyan Wang, Wei Sun, Run-cang Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
title | Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
title_full | Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
title_fullStr | Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
title_full_unstemmed | Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
title_short | Structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
title_sort | structural evaluation and bioethanol production by simultaneous saccharification and fermentation with biodegraded triploid poplar |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3639831/ https://www.ncbi.nlm.nih.gov/pubmed/23517540 http://dx.doi.org/10.1186/1754-6834-6-42 |
work_keys_str_mv | AT wangkun structuralevaluationandbioethanolproductionbysimultaneoussaccharificationandfermentationwithbiodegradedtriploidpoplar AT yanghaiyan structuralevaluationandbioethanolproductionbysimultaneoussaccharificationandfermentationwithbiodegradedtriploidpoplar AT wangwei structuralevaluationandbioethanolproductionbysimultaneoussaccharificationandfermentationwithbiodegradedtriploidpoplar AT sunruncang structuralevaluationandbioethanolproductionbysimultaneoussaccharificationandfermentationwithbiodegradedtriploidpoplar |