Dr Alejandra Diaz De Rienzo M.A.DiazDeRienzo@salford.ac.uk
Lecturer
Biosurfactants are surface-active agents that are produced by a variety of microorganisms including yeasts, filamentous fungi and bacteria. In this work, we report on the ability of Pseudomonas aeruginosa ATCC 9027 and Burkholderia thailandensis E264 to produce rhamnolipids via a 10-L bioreactor and their recovery through foam fractionation studies in a continuous stripping mode. The recovery of Rha-C10-C10 (mono-rhamnolipids) produced by P. aeruginosa ATCC 9027 increased (from 6% to 96%), whilst the enrichment decreased (from 2.9 to 1.2) with the increasing airflow rate. These results are consistent with foam fractionation of a single surfactant system with stable foam. The recovery and enrichment of Rha-Rha-C14-C14 (di-rhamnolipids) produced by B. thailandensis E264 (and an unknown molecule) in a single-component system were found to display different characteristics. Both recovery and enrichment were found to decrease with the airflow rate. It is postulated that a competitive adsorption process could occur between the smaller molecule identified by electrospray ionisation–mass spectrometry (ESI–MS) and Rha-Rha-C14-C14.
de Rienzo, M., Kalalanathan, I., & Martin, P. (2016). Comparative study of the production of rhamnolipid biosurfactants by B. thailandensis E264 and P. aeruginosa ATCC 9027 using foam fractionation. Process Biochemistry, 51(7), 820-827. https://doi.org/10.1016/j.procbio.2016.04.007
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 8, 2016 |
Publication Date | May 31, 2016 |
Deposit Date | Jun 26, 2023 |
Publicly Available Date | Jun 26, 2023 |
Journal | Process Biochemistry |
Print ISSN | 1359-5113 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 51 |
Issue | 7 |
Pages | 820-827 |
DOI | https://doi.org/10.1016/j.procbio.2016.04.007 |
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