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Variants of lipopeptides and glycolipids produced by Bacillus amyloliquefaciens and Pseudomonas aeruginosa cultured in different carbon substrates

Overview of attention for article published in AMB Express, May 2017
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Title
Variants of lipopeptides and glycolipids produced by Bacillus amyloliquefaciens and Pseudomonas aeruginosa cultured in different carbon substrates
Published in
AMB Express, May 2017
DOI 10.1186/s13568-017-0367-4
Pubmed ID
Authors

Thando Ndlovu, Marina Rautenbach, Sehaam Khan, Wesaal Khan, Thando Ndlovu, Marina Rautenbach, Sehaam Khan, Wesaal Khan

Abstract

The quantitative and qualitative effect of water immiscible and miscible carbon-rich substrates on the production of biosurfactants, surfactin and rhamnolipids, by Bacillus amyloliquefaciens ST34 and Pseudomonas aeruginosa ST5, respectively, was analysed. A small-scale high throughput 96 deep-well micro-culture method was utilised to cultivate the two strains in mineral salt medium (MSM) supplemented with the water miscible (glucose, glycerol, fructose and sucrose) and water immiscible carbon sources (diesel, kerosene and sunflower oil) under the same growth conditions. The biosurfactants produced by the two strains were isolated by acid precipitation followed by an organic solvent extraction. Ultra-performance liquid chromatography coupled to electrospray ionisation mass spectrometry was utilised to analyse yields and characterise the biosurfactant variants. For B. amyloliquefaciens ST34, maximum surfactin production was observed in the MSM supplemented with fructose (28 mg L(-1)). In addition, four surfactin analogues were produced by ST34 using the different substrates, however, the C13-C15 surfactins were dominant in all extracts. For P. aeruginosa ST5, maximum rhamnolipid production was observed in the MSM supplemented with glucose (307 mg L(-1)). In addition, six rhamnolipid congeners were produced by ST5 using different substrates, however, Rha-Rha-C10-C10 and Rha-C10-C10 were the most abundant in all extracts. This study highlights that the carbon sources utilised influences the yield and analogues/congeners of surfactin and rhamnolipids produced by B. amyloliquefaciens and P. aeruginosa, respectively. Additionally, glucose and fructose were suitable substrates for rhamnolipid and surfactin, produced by P. aeruginosa ST5 and B. amyloliquefaciens ST34, which can be exploited for bioremediation or as antimicrobial agents.

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Mendeley readers

The data shown below were compiled from readership statistics for 64 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 64 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 14 22%
Student > Ph. D. Student 9 14%
Researcher 6 9%
Student > Doctoral Student 5 8%
Student > Master 5 8%
Other 12 19%
Unknown 13 20%
Readers by discipline Count As %
Agricultural and Biological Sciences 16 25%
Biochemistry, Genetics and Molecular Biology 10 16%
Chemical Engineering 5 8%
Chemistry 5 8%
Immunology and Microbiology 4 6%
Other 3 5%
Unknown 21 33%

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 01 June 2017.
All research outputs
#6,948,654
of 11,218,652 outputs
Outputs from AMB Express
#282
of 649 outputs
Outputs of similar age
#149,992
of 266,463 outputs
Outputs of similar age from AMB Express
#40
of 71 outputs
Altmetric has tracked 11,218,652 research outputs across all sources so far. This one is in the 23rd percentile – i.e., 23% of other outputs scored the same or lower than it.
So far Altmetric has tracked 649 research outputs from this source. They receive a mean Attention Score of 2.2. This one is in the 6th percentile – i.e., 6% 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 266,463 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 34th percentile – i.e., 34% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 71 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.