| Title |
N2 gas is an effective fertilizer for bioethanol production by Zymomonas mobilis
|
|---|---|
| Published in |
Proceedings of the National Academy of Sciences of the United States of America, February 2015
|
| DOI | 10.1073/pnas.1420663112 |
| Pubmed ID | |
| Authors |
Timothy A. Kremer, Breah LaSarre, Amanda L. Posto, James B. McKinlay |
| Abstract |
A nascent cellulosic ethanol industry is struggling to become cost-competitive against corn ethanol and gasoline. Millions of dollars are spent on nitrogen supplements to make up for the low nitrogen content of the cellulosic feedstock. Here we show for the first time to our knowledge that the ethanol-producing bacterium, Zymomonas mobilis, can use N2 gas in lieu of traditional nitrogen supplements. Despite being an electron-intensive process, N2 fixation by Z. mobilis did not divert electrons away from ethanol production, as the ethanol yield was greater than 97% of the theoretical maximum. In a defined medium, Z. mobilis produced ethanol 50% faster per cell and generated half the unwanted biomass when supplied N2 instead of ammonium. In a cellulosic feedstock-derived medium, Z. mobilis achieved a similar cell density and a slightly higher ethanol yield when supplied N2 instead of the industrial nitrogen supplement, corn steep liquor. We estimate that N2-utilizing Z. mobilis could save a cellulosic ethanol production facility more than $1 million/y. |
X Demographics
The data shown below were collected from the profiles of 21 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 6 | 29% |
| Netherlands | 3 | 14% |
| United Kingdom | 2 | 10% |
| Chile | 1 | 5% |
| Venezuela, Bolivarian Republic of | 1 | 5% |
| Spain | 1 | 5% |
| Latvia | 1 | 5% |
| Unknown | 6 | 29% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 12 | 57% |
| Scientists | 9 | 43% |
Mendeley readers
The data shown below were compiled from readership statistics for 161 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 2 | 1% |
| Canada | 1 | <1% |
| Mexico | 1 | <1% |
| Japan | 1 | <1% |
| United States | 1 | <1% |
| Unknown | 155 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 35 | 22% |
| Researcher | 27 | 17% |
| Student > Bachelor | 20 | 12% |
| Student > Master | 15 | 9% |
| Student > Doctoral Student | 9 | 6% |
| Other | 26 | 16% |
| Unknown | 29 | 18% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 50 | 31% |
| Biochemistry, Genetics and Molecular Biology | 28 | 17% |
| Engineering | 14 | 9% |
| Environmental Science | 9 | 6% |
| Chemical Engineering | 8 | 5% |
| Other | 18 | 11% |
| Unknown | 34 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 108. 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 07 November 2022.
All research outputs
#373,183
of 24,770,025 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#6,796
of 101,755 outputs
Outputs of similar age
#4,758
of 362,526 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#123
of 961 outputs
Altmetric has tracked 24,770,025 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 98th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 101,755 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 38.8. This one has done particularly well, scoring higher than 93% 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 362,526 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 961 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 87% of its contemporaries.