Funded by the European Union Framework Programme for research and innovation, Horizon 2020 under grant agreement No 635340|

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So far Lucy has created 35 blog entries.

End of year 2 update

The Marisurf project is progressing as planned.  Screening was finished in mid 2017 and the consortium has selected 4 of the most promising strains to test further. These strains have desirable characteristics such as the ability to reduce surface tension and to produce foam and or  act as an emulsifier. Our end users – Macphie, […]

31 January 2018|
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1st review period – What has been achieved?

During the first reporting period Sep 15 through to Feb 17) , the MARISURF team has developed an innovative screening programme to identify surfactants from a large bacterial collection (greater than 500 strains) housed at HWU.

The industrial partners have identified the desirable properties for the bio-surfactants […]

24 July 2017|

Surface-active biopolymers from marine bacteria for potential biotechnological applications


Karina Sałek and Tony Gutierrez


Surface-active agents are amphiphilic chemicals that are used in almost every sector of modern industry, the bulk of which are produced by organo-chemical synthesis. Those produced from biological sources (biosurfactants and bioemulsifiers), however, have gained increasing interest in recent years due to their wide structural and functional diversity, lower […]

Genome Sequence of Halomonas sp. Strain MCTG39a, a Hydrocarbon-Degrading and Exopolymeric Substance-Producing Bacterium


Tony Gutierrez, William B. Whitman, Marcel Huntemann, Alex Copeland, Amy Chen, Nikos Kyrpides, Victor Markowitz, Manoj Pillay, Natalia Ivanova, Natalia Mikhailova, Galina Ovchinnikova, Evan Andersen, Amrita Pati, Dimitrios Stamatis, T. B. K. Reddy, Chew Yee Ngan, Mansi Chovatia, Chris Daum, Nicole Shapiro, Michael N. Cantor, Tanja Woyke


Halomonas sp. strain MCTG39a was isolated from coastal sea […]

11 July 2016|Tags: , |

Role of Bacterial Exopolysaccharides (EPS) in the Fate of the Oil Released during the Deepwater Horizon Oil Spill


Tony Gutierrez, David Berry, Tingting Yang, Sara Mishamandani, Luke McKay, Andreas Teske, Michael D. Aitken


Halomonas species are recognized for producing exopolysaccharides (EPS) exhibiting amphiphilic properties that allow these macromolecules to interface with hydrophobic substrates, such as hydrocarbons. There remains a paucity of knowledge, however, on the potential of Halomonas EPS to influence the […]

11 July 2016|Tags: , , |

Metal binding properties of the EPS produced by Halomonas sp. TG39 and its potential in enhancing trace element bioavailability to eukaryotic phytoplankton


Tony Gutierrez, Dondra V. Biller, Tracy Shimmield, David H. Green


An emergent property of exopolysaccharides (EPS) produced by marine bacteria is their net negative charge, predominantly conferred by their high uronic acids content. Here, we investigated the EPS produced by an algal-associated marine bacterium, Halomonas sp. strain TG39, for its capacity to sequester trace […]

Emulsifying properties of a glycoprotein extract produced by a marine Flexibacter species strain TG382


Tony Gutiérreza, Vincent V. Leob, Graeme M.Walkerb, David H. Green


We report, for the first time, on the production of an emulsifying polymer produced by a Flexibacter species (designated strain TG382). This polymer, E-382,was produced extracellularly during growth of the organism in a marine broth amended with glucose. After cold ethanol precipitation, extensive dialysis […]

Glycoprotein emulsifiers from two marine Halomonas species: chemical and physical characterization


T. Gutierrez, B. Mulloy, K. Black and D. H. Green


Aims: To partially purify and characterize bioemulsifiers produced by two new marine Halomonas species, TG39 and TG67, and to compare their emulsifying activities with those of commercial emulsifiers. Methods and Results: The production of emulsifiers HE39 and HE67 was achieved from glucose-supplemented marine broth, and recovered […]

Microbial Biosurfactants as Additives for Food Industries


Jenyffer Medeiros Campos,  Tania Lucia Montenegro Stamford, Leonie Asfora Sarubbo, Juliana Moura de Luna, Raquel Diniz Rufino, Ibrahim M. Banat


Microbial biosurfactants with high ability to reduce surface and interfacial surface tension and conferring important properties such as emulsification, detergency, solubilization, lubrication and phase dispersion have a wide range of potential applications in many industries. Significant […]

23 November 2015|Tags: , , , , , |

Les biosurfactants, plus que jamais sollicités


Ibrahim M. Banat 


Les recherches sur les surfactants, agents utilisés comme émulsifiants ou dispersants, sont stimulées par les préoccupations écologiques. De nombreux microorganismes producteurs de surfactants biodégradables pourraient permettre, à l’ avenir, de mieux lutter contre les pollutions.

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23 November 2015|Tags: , |