Rhamnolipids—Next generation surfactants?

Müller, Markus; Kügler, Johannes H.; Henkel, Marius; Gerlitzki, Melanie; Hörmann, Barbara; Pöhnlein, Martin; Syldatk, Christoph; Hausmann, Rudolf

doi:10.1016/j.jbiotec.2012.05.022

Cited by 286 publications

(209 citation statements)

References 143 publications

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“…Industrial interest in biosurfactants is not solely based on the bio-acitivity of these molecules, but is also due to the broader ecological awareness linked to their application, which in turn is driven by sustainability initiatives and green agendas . Biosurfactants can be applied in various areas such as the nutrient-, cosmetic-, textile-, varnish-, pharmaceutical-, mining-, and oil recovery industries Müller et al, 2012). …”

Section: Microbial Surfactants and Their Applicationsmentioning

confidence: 99%

Microbiotechnology Based Surfactants and Their Applications

Rahman¹

2016

Frontiers Research Topics

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PublisherFrontiers in Microbiology About FrontiersFrontiers is more than just an open-access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers Journal SeriesThe Frontiers Journal Series is a multi-tier and interdisciplinary set of open-access, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers Journal Series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to QualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: researchtopics@frontiersin.org 2 February 2016 | Microbiotechnology Based Surfactants and Their Applications Frontiers in MicrobiologyBiosurfactants are structurally diverse group of bioactive molecules produced by a variety of microorganisms. They are secondary metabolites that accumulate at interfaces, reduce surface tension and form micellar aggregates. This research topic describes few novel microbial strains with a focus on increasing our understanding of genetics, physiology, regulation of biosurfactant production and their commercial potentials. A major stumbling block in the commercialization of b...

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Section: Microbial Surfactants and Their Applicationsmentioning

confidence: 99%

Microbiotechnology Based Surfactants and Their Applications

Rahman¹

2016

Frontiers Research Topics

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“…In the result, research on environmentally sound surfactants -biosurfactantsincreased significantly between 2000 and 2010 [3]. Biosurfactants can be composed biologically by fermentation, by cell growth of microorganisms, and by bioconversion carried out via enzymes synthesized by bacteria or yeast (microbial cultivation) or from substances such as sugars, oils, alkanes, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from chemical and physical characterization, performance indicators also includes: haptic properties of surfactant, foaming abilities, odor and colour [3].…”

Section: Introductionmentioning

confidence: 99%

Full Factorial Design of Screening Experiments for Biosurfactant Enhanced Remediation of Hydrophobic Substances in Soil

Timma¹,

Sams²,

Valtere³

et al. 2014

JOCET

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“…O domínio apolar é geralmente uma cadeia hidrocarbonada e o domínio polar pode ser de caráter iônico, não iônico ou anfotérico (DESAI; BANAT, 1997;LUNA et al, 2013). A presença de um domínio hidrofóbico e um domínio hidrofílico na mesma molécula faz com que os surfatantes apresentem a tendência a distribuir-se na interface entre fases com diferentes polaridades (óleo/água ou ar/água) adquirindo a forma de um filme molecular ordenado que reduz a tensão interfacial, dando aos surfatantes suas características únicas CAMPOS et al, 2013;SATPUTE et al, 2010b Os ramnolipídeos são glicolipídeos formados pela união de uma ou dois moléculas de L-ramnose com uma ou duas cadeias de ácido graxo β-hidroxialifático, através de uma ligação β-glicosídica (MÜLLER et al, 2012). A variação estrutural faz que existam 4 tipos principais de ramnolipídeos: i) os mono-ramnolipídeos Rh1, os quais contém uma ramnose ligada a dois ácidos graxos β-hidroxialifático, ii) os di-ramnolipídeos Rh2 os quais contém duas ramnoses ligadas a dois ácidos graxos β-hidroxialifáticos, iii) os tri-ramnolipídeos Rh3 os quais contém uma ramnose ligada a um ácido graxo β-hidroxialifático, e iv) tetra-ramnolipídeos Rh4 os quais contém duas ramnoses ligadas a um ácido graxos β-hidroxialifático.…”

Section: Surfatantesunclassified

Produção e caracterização do biossurfatante produzido pela bactéria marinha Brevibacterium luteolum

Daza¹

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Biosurfactants (BS) are microbial-derived molecules showing tensoactive and emulsification properties. These compounds are candidates to replace synthetic surfactants for industrial applications due to their less toxicity, greater biodegradation capacity, greater chemical diversity and greater efficiency and effectiveness under extreme physical conditions of salinity, pressure and temperature. Commercial and industrial use of BS is not sustainable due their high production cost mainly related to low production yields. The use of low cost substrates and statistical tools to enhance the production yield of biosurfactants are two of the main strategies to deal with that problem. The objective of this work was to study the production and recovery of the BS produced by B. luteolum, aiming to enhance its production through a factorial experimental design, and to characterize the chemical structure of the BS. It was found that resin adsorption was more effective than acid precipitation to recover the BS. The production of BS was enhanced through a factorial experimental design 2 3 using the concentrations of the carbon source (mineral oil), the nitrogen source (ammonium nitrate) and artificial seawater as the factors and the surface tension of a solution 0,1% of BS as the response. The value of factors that enhanced the production of BS were 4% of carbon source, 2% of nitrogen source and 20% of artificial sea water showing a surface tension of 27mNm -1. The BS was characterized as a mix of lipopeptides with fatty acid chains varying between 10-18 carbon units and a total protein content of 5%. Three chemical structures were proposed for the active compounds: two proline-lipids with the fatty acid chains C 16:0 e C 18:0 respectively and a lipopeptide with a peptide sequence Phe-Al-X-X-Pro-Pro-Thr (X=Leu/Ile) linked to a fatty acid chain C 16:0 . BS did not show antimicrobial activity against S. aureus, E. coli, S. enteritidis, L. monocytogenes and S. mutans at concentration range tested. The use of mineral oil as a substrate for the production of the BS suggests that the bacteria and the BS can be explore for applications as bioremediation and enhanced oil recovery (EOR).

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Rhamnolipids—Next generation surfactants?

Cited by 286 publications

References 143 publications

Microbiotechnology Based Surfactants and Their Applications

Microbiotechnology Based Surfactants and Their Applications

Full Factorial Design of Screening Experiments for Biosurfactant Enhanced Remediation of Hydrophobic Substances in Soil

Produção e caracterização do biossurfatante produzido pela bactéria marinha Brevibacterium luteolum

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