Abstract:
Background:Energy crops including Miscanthus provide a storable, portable energy source which can be used to complement a wide range of products and energy generation systems. Miscanthus is predominantly used in Europe as a combustion material for electricity generation but also has the potential for biochemical conversion due to its high yield and low-nutrient requirements. The ratio of holocellulose (hemicellulose and cellulose combined) to acid detergent lignin (H:L) within the senesced material has previously been shown to indicate the relative suitability of Miscanthus accessions for thermochemical conversion. In this study, the ratio was assessed to examine its use as a selection aid for biochemical conversion. 20 highly-characterised Miscanthus accessions were saccharified using an enzyme mix to determine optimum sugar release. Nine of these accessions spanning high, medium and low H:L ratios were then autoclaved with dilute acid, alkali or water, and enzymically hydrolysed and fermented to produce ethanol. Samples taken throughout the process allowed assessments of released sugars. Results:Enzymic degradation of the biomass showed a relationship between H:L ratio and glucose release, with high glucose release for high H:L ratio accessions and vice versa. Xylose release showed no such relationship. This relationship was maintained following pretreatments and enzyme saccharification, where compound analysis showed that following all pretreatments, accessions with high H:L ratios repeatedly had the highest releases of glucose, xylose and arabinose, and produced more ethanol. Release of all measured compounds increased with the pretreatment severity and ethanol yields from each pretreatment correlated with the respective glucose yield, providing assurance that any inhibitory compounds generated were tolerated by the fermentation yeast. Strong correlations were also seen between glucose release, ethanol and cell wall components, with cellulose showing the highest correlations with ethanol yields for some treatments and H:L ratio with others. Conclusions:The H:L ratio is a good predictor of ethanol yields and sugar release from Miscanthus in this study but individual components lignin and cellulose also correlate well, especially for hot water and mild acid pretreatments. In conclusion, use of the H:L ratio does not provide any advantages over the concentration of individual cell wall components for predicting sugar release and ethanol yields.
journal_name
Biotechnol Biofuelsjournal_title
Biotechnology for biofuelsauthors
Adams JMM,Winters AL,Hodgson EM,Gallagher JAdoi
10.1186/s13068-018-1066-3subject
Has Abstractpub_date
2018-03-14 00:00:00pages
67issn
1754-6834pii
1066journal_volume
11pub_type
杂志文章abstract:BACKGROUND:As a green alternative for the production of transportation fuels, the enzymatic hydrolysis of lignocellulose and subsequent fermentation to ethanol are being intensively researched. To be economically feasible, the hydrolysis of lignocellulose must be conducted at a high concentration of solids, which resul...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-6-104
更新日期:2013-07-24 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-017-0887-9
更新日期:2017-09-04 00:00:00
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journal_title:Biotechnology for biofuels
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更新日期:2019-03-09 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-1-18
更新日期:2008-12-23 00:00:00
abstract:: The considerable increase in biodiesel production worldwide in the last 5 years resulted in a stoichiometric increased coproduction of crude glycerol. As an excess of crude glycerol has been produced, its value on market was reduced and it is becoming a "waste-stream" instead of a valuable "coproduct". The developmen...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-5-48
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-021-01877-2
更新日期:2021-01-28 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-015-0304-1
更新日期:2015-09-15 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-016-0540-z
更新日期:2016-06-17 00:00:00
abstract:BACKGROUND:The search for novel thermostable xylanases for industrial use has intensified in recent years, and thermophilic fungi are a promising source of useful enzymes. The present work reports the heterologous expression and biochemical characterization of a novel thermostable xylanase (GH10) from the thermophilic ...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-7-115
更新日期:2014-07-29 00:00:00
abstract:BACKGROUND:There are many different types of pretreatment carried out to prepare cellulosic substrates for fermentation. In this study, one- and two-stage hydrothermal pretreatment were carried out to determine their effects on subsequent fermentations. The two substrates were found to behave differently during ferment...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-016-0446-9
更新日期:2016-02-03 00:00:00
abstract:BACKGROUND:In general, biofuel production involves biomass pretreatment and enzymatic saccharification, followed by the subsequent sugar conversion to biofuel via fermentation. The crucial step in the production of biofuel from biomass is the enzymatic saccharification. Many of the commercial cellulase enzyme cocktails...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-016-0587-x
更新日期:2016-08-22 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章,评审
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更新日期:2019-10-08 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-4-38
更新日期:2011-10-12 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-017-0978-7
更新日期:2017-12-04 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-016-0488-z
更新日期:2016-03-29 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-019-1378-y
更新日期:2019-02-27 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-6-154
更新日期:2013-10-25 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-017-0884-z
更新日期:2017-08-17 00:00:00
abstract:BACKGROUND:Lignocellulosic materials are abundant and among the most important potential sources for bioethanol production. Although the pretreatment of lignocellulose is necessary for efficient saccharification and fermentation, numerous by-products, including furan derivatives, weak acids, and phenolic compounds, are...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-1-3
更新日期:2008-04-15 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-6-15
更新日期:2013-01-28 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-016-0664-1
更新日期:2016-11-15 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-019-1574-9
更新日期:2019-09-30 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-017-0932-8
更新日期:2017-10-30 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-017-0961-3
更新日期:2017-11-30 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-014-0126-6
更新日期:2014-08-27 00:00:00
abstract:Background:There is an urgent requirement for second-generation bio-based industries for economical yet efficient enzymatic cocktail to convert diverse cellulosic biomass into fermentable sugars. In our previous study, secretome of Penicillium funiculosum NCIM1228 showed high commercial potential by exhibiting high bio...
journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-018-1011-5
更新日期:2018-01-25 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-015-0370-4
更新日期:2015-11-25 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-017-0923-9
更新日期:2017-10-11 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/s13068-016-0427-z
更新日期:2016-02-02 00:00:00
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journal_title:Biotechnology for biofuels
pub_type: 杂志文章
doi:10.1186/1754-6834-7-16
更新日期:2014-01-29 00:00:00