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So far Lucy has created 23 blog entries.

Surface-active biopolymers from marine bacteria for potential biotechnological applications

Authors

Karina Sałek and Tony Gutierrez

Abstract

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

Authors

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

Abstract

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

Authors

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

Abstract

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

Authors

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

Abstract

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

Authors

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

Abstract

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

Authors

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

Abstract

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

Authors

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

Abstract

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

Author

Ibrahim M. Banat 

Abstract

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: , |

Potential commercial applications of microbial surfactants

Authors

I. M. Banat á R. S. Makkar á S. S. Cameotra

Abstract

Surfactants are surface-active compounds capable of reducing surface and interfacial tension at the interfaces between liquids, solids and gases, thereby al- lowing them to mix or disperse readily as emulsions in water or other liquids. The enormous market demand for surfactants is currently met by […]

23 November 2015|Tags: , |

Microbial biosurfactants production, applications and future potential

Authors

Ibrahim M. Banat & Andrea Franzetti & Isabella Gandolfi & Giuseppina Bestetti & Maria G. Martinotti & Letizia Fracchia & Thomas J. Smyth & Roger Marchant

Abstract

Microorganisms synthesise a wide range of surface-active compounds (SAC), generally called biosurfactants. These compounds are mainly classified according to their molecular weight, physico-chemical properties and mode of action. The low-molecular-weight […]

23 November 2015|Tags: , , , |