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Biological lignocellulose solubilization: comparative evaluation of biocatalysts and enhancement via cotreatment

Overview of attention for article published in Biotechnology for Biofuels, January 2016
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • One of the highest-scoring outputs from this source (#2 of 548)
  • High Attention Score compared to outputs of the same age (98th percentile)
  • High Attention Score compared to outputs of the same age and source (98th percentile)

Mentioned by

news
13 news outlets
blogs
1 blog
twitter
2 tweeters

Citations

dimensions_citation
75 Dimensions

Readers on

mendeley
138 Mendeley
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Title
Biological lignocellulose solubilization: comparative evaluation of biocatalysts and enhancement via cotreatment
Published in
Biotechnology for Biofuels, January 2016
DOI 10.1186/s13068-015-0412-y
Pubmed ID
Authors

Julie M. D. Paye, Anna Guseva, Sarah K. Hammer, Erica Gjersing, Mark F. Davis, Brian H. Davison, Jessica Olstad, Bryon S. Donohoe, Thanh Yen Nguyen, Charles E. Wyman, Sivakumar Pattathil, Michael G. Hahn, Lee R. Lynd

Abstract

Feedstock recalcitrance is the most important barrier impeding cost-effective production of cellulosic biofuels. Pioneer commercial cellulosic ethanol facilities employ thermochemical pretreatment and addition of fungal cellulase, reflecting the main research emphasis in the field. However, it has been suggested that it may be possible to process cellulosic biomass without thermochemical pretreatment using thermophilic, cellulolytic bacteria. To further explore this idea, we examine the ability of various biocatalysts to solubilize autoclaved but otherwise unpretreated cellulosic biomass under controlled but not industrial conditions. Carbohydrate solubilization of mid-season harvested switchgrass after 5 days ranged from 24 % for Caldicellulosiruptor bescii to 65 % for Clostridium thermocellum, with intermediate values for a thermophilic horse manure enrichment, Clostridium clariflavum, Clostridium cellulolyticum, and simultaneous saccharification and fermentation (SSF) featuring a fungal cellulase cocktail and yeast. Under a variety of conditions, solubilization yields were about twice as high for C. thermocellum compared to fungal cellulase. Solubilization of mid-season harvested switchgrass was about twice that of senescent switchgrass. Lower yields and greater dependence on particle size were observed for Populus as compared to switchgrass. Trends observed from data drawn from six conversion systems and three substrates, including both time course and end-point data, were (1) equal fractional solubilization of glucan and xylan, (2) no biological solubilization of the non-carbohydrate fraction of biomass, and (3) higher solubilization for three of the four bacterial cultures tested as compared to the fungal cellulase system. Brief (5 min) ball milling of solids remaining after fermentation of senescent switchgrass by C. thermocellum nearly doubled carbohydrate solubilization upon reinnoculation as compared to a control without milling. Greater particle size reduction and solubilization were observed for milling of partially fermented solids than for unfermented solids. Physical disruption of cellulosic feedstocks after initiation of fermentation, termed cotreatment, warrants further study. While the ability to achieve significant solubilization of minimally pretreated switchgrass is widespread, a fivefold difference between the most and least effective biocatalyst-feedstock combinations was observed. Starting with nature's best biomass-solubilizing systems may enable a reduction in the amount of non-biological processing required, and in particular substitution of cotreatment for pretreatment.

Twitter Demographics

The data shown below were collected from the profiles of 2 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 138 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Iran, Islamic Republic of 1 <1%
Mexico 1 <1%
United States 1 <1%
Brazil 1 <1%
Unknown 134 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 37 27%
Researcher 24 17%
Student > Master 19 14%
Student > Bachelor 11 8%
Professor 10 7%
Other 18 13%
Unknown 19 14%
Readers by discipline Count As %
Agricultural and Biological Sciences 40 29%
Biochemistry, Genetics and Molecular Biology 16 12%
Engineering 16 12%
Chemical Engineering 14 10%
Chemistry 8 6%
Other 11 8%
Unknown 33 24%

Attention Score in Context

This research output has an Altmetric Attention Score of 99. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 19 January 2016.
All research outputs
#62,475
of 6,992,211 outputs
Outputs from Biotechnology for Biofuels
#2
of 548 outputs
Outputs of similar age
#5,181
of 305,647 outputs
Outputs of similar age from Biotechnology for Biofuels
#1
of 95 outputs
Altmetric has tracked 6,992,211 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 548 research outputs from this source. They receive a mean Attention Score of 3.7. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 305,647 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 98% of its contemporaries.
We're also able to compare this research output to 95 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 98% of its contemporaries.