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Enhancement of Surfactin yield by improving the medium composition and fermentation process

Overview of attention for article published in AMB Express, August 2015
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1 tweeter

Citations

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115 Mendeley
Title
Enhancement of Surfactin yield by improving the medium composition and fermentation process
Published in
AMB Express, August 2015
DOI 10.1186/s13568-015-0145-0
Pubmed ID
Authors

Judit Willenbacher, Wladimir Yeremchuk, Teresa Mohr, Christoph Syldatk, Rudolf Hausmann

Abstract

Surfactin is one of the most promising biosurfactants due to its extraordinary surface activity. Commonly, the well-established Cooper medium, a glucose-based mineral salt medium, is utilized for the microbial production of Surfactin. The current study investigated the enhancement of Surfactin yields by analyzing the effects of different glucose concentrations, next to the introduction of an alternative chelating agent and nitrogen source. The utilization of 8 g/L glucose, 0.008 mM Na3citrate and 50 mM (NH4)2SO4 increased Surfactin yields from 0.7 to 1.1 g/L during shake flask experiments applying Bacillus subtilis DSM10(T). Consequentially conducted shake flask experiments, employing five other Surfactin producer strains during cultivation in the former and enhanced version of the Cooper medium, suggest a general enhancement of Surfactin yields during application of the enhanced version of the Cooper medium. The enhancement of the medium composition is therefore most likely independent from the employed producer strain. The following utilization of the enhanced medium composition during fed-batch fermentation with integrated foam fractionation yielded 30 % more Surfactin in comparison to batch fermentations with integrated foam fractionation employing the former version of the Cooper medium.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter 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 115 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 1 <1%
Denmark 1 <1%
Poland 1 <1%
Unknown 112 97%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 18 16%
Student > Bachelor 18 16%
Student > Master 16 14%
Researcher 12 10%
Student > Doctoral Student 8 7%
Other 24 21%
Unknown 19 17%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 33 29%
Agricultural and Biological Sciences 25 22%
Engineering 8 7%
Unspecified 8 7%
Immunology and Microbiology 5 4%
Other 13 11%
Unknown 23 20%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. 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 22 August 2015.
All research outputs
#2,930,619
of 5,570,860 outputs
Outputs from AMB Express
#127
of 268 outputs
Outputs of similar age
#104,528
of 192,697 outputs
Outputs of similar age from AMB Express
#15
of 24 outputs
Altmetric has tracked 5,570,860 research outputs across all sources so far. This one is in the 33rd percentile – i.e., 33% of other outputs scored the same or lower than it.
So far Altmetric has tracked 268 research outputs from this source. They receive a mean Attention Score of 2.1. This one is in the 14th percentile – i.e., 14% of its peers scored the same or lower than it.
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 192,697 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 35th percentile – i.e., 35% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 24 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.