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Microbiotechnology Based Surfactants and Their Applications MICROBIOTECHNOLOGY BASED SURFACTANTS AND THEIR APPLICATIONS EDITED BY : Pattanathu K.S.M. Rahman PUBLISHED IN : Frontiers in Microbiology Frontiers Copyright Statement About Frontiers © Copyright 2007-2016 Frontiers Media SA. All rights reserved. Frontiers is more than just an open-access publisher of scholarly articles: it is a pioneering All content included on this site, approach to the world of academia, radically improving the way scholarly research such as text, graphics, logos, button icons, images, video/audio clips, is managed. The grand vision of Frontiers is a world where all people have an equal downloads, data compilations and software, is the property of or is opportunity to seek, share and generate knowledge. Frontiers provides immediate and licensed to Frontiers Media SA permanent online open access to all its publications, but this alone is not enough to (“Frontiers”) or its licensees and/or subcontractors. 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With their The above represents a summary unique mix of varied contributions from Original Research to Review Articles, Frontiers only. For the full conditions see the Research Topics unify the most influential researchers, the latest key findings and historical Conditions for Authors and the Conditions for Website Use. advances in a hot research area! Find out more on how to host your own Frontiers ISSN 1664-8714 Research Topic or contribute to one as an author by contacting the Frontiers Editorial ISBN 978-2-88919-752-1 DOI 10.3389/978-2-88919-752-1 Office:[email protected] Frontiers in Microbiology 1 February 2016 | Microbiotechnology Based Surfactants and Their Applications MICROBIOTECHNOLOGY BASED SURFACTANTS AND THEIR APPLICATIONS Topic Editor: Pattanathu K.S.M. Rahman, Technology Futures Institute / TeeGene Biotech Ltd., Teesside University, Cleveland, UK Biosurfactants are structurally diverse group of bioactive molecules produced by a variety of microorganisms. They are secondary metabolites that accumulate at interfaces, reduce surface ten- sion 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 biosurfactants is their high cost of production. Many factors play a significant role in making the process cost-effective and the most important one being the use of low-cost substrates such as agricultural residues for the production of bio- surfactants. With the stringent government regu- lations coming into effect in favor of production and usage of the bio-based surfactants, many new companies aim to commercialize technologies Structure of micelles produced by biosurfactant. used for the production of biosurfactants and Image by Dr Pattanathu K.S.M. Rahman to bring down costs. This Research Topic covers a compilation of original research articles, reviews and research commentary submitted by researchers enthusiastically working in the field of biosurfactants and highlights recent advances in our knowledge of the biosurfactants and understanding of the biochemical and molecular mechanisms involved in their production, scale-up and industrial applications. Apart from their diverse applications in the field of bioremediation, enhanced oil recovery, cosmetic, food and medical industries, biosurfactants can also boast off their unique eco-friendly nature to attract consumers and give the chemical surfactants a tough competition in the global market. Frontiers in Microbiology 2 February 2016 | Microbiotechnology Based Surfactants and Their Applications This biosurfactant focused research topic aims to summarize the current achievements and explore the direction of development for the future generation of biosurfactants and bioemulsi- fiers. Some of the biosurfactant optimization processes presented are well-structured and already have a well-established research community. We wish to stimulate on-going discussions at the level of the biosurfactant production including common challenges in the process development, novel organisms and new feedstock and technologies for maximum benefit, key features of next generation biosurfactants and bioemulsifiers. We have compiled the research outputs of interna- tional leaders in the filed of biosurfactant particularly on the development of a state-of-the-art and highly-efficient process platform. Citation: Rahman, P. K. S. M., ed. (2016). Microbiotechnology Based Surfactants and Their Applications. Lausanne: Frontiers Media. doi: 10.3389/978-2-88919-752-1 Frontiers in Microbiology 3 February 2016 | Microbiotechnology Based Surfactants and Their Applications Table of Contents 05 Editorial: Microbiotechnology Based Surfactants and Their Applications Pattanathu K. S. M. Rahman and Kamaljeet K. Sekhon Randhawa 08 Biosurfactant production from marine hydrocarbon-degrading consortia and pure bacterial strains using crude oil as carbon source Eleftheria Antoniou, Stilianos Fodelianakis, Emmanouela Korkakaki and Nicolas Kalogerakis 22 Cost effective technologies and renewable substrates for biosurfactants’ production Ibrahim M. Banat, Surekha K. Satpute, Swaranjit S. Cameotra, Rajendra Patil and Narendra V. Nyayanit 40 Analysis of biosurfactants from industrially viable Pseudomonas strain isolated from crude oil suggests how rhamnolipids congeners affect emulsification property and antimicrobial activity Palashpriya Das, Xin-Ping Yang and Luyan Z. Ma 48 Biosurfactant production by Bacillus subtilis using corn steep liquor as culture medium Eduardo J. Gudiña, Elisabete C. Fernandes, Ana I. Rodrigues, José A. Teixeira and Lígia R. Rodrigues 55 Sulfur source-mediated transcriptional regulation of the rhlABC genes involved in biosurfactants production by Pseudomonas sp. strain AK6U Wael Ismail, Ashraf M. El Nayal, Ahmed R. Ramadan and Nasser Abotalib 62 Surfactants tailored by the class Actinobacteria Johannes H. Kügler, Marilize Le Roes-Hill, Christoph Syldatk and Rudolf Hausmann 85 The anionic biosurfactant rhamnolipid does not denature industrial enzymes Jens K. Madsen, Rasmus Pihl, Anders H. Møller, Anne T. Madsen, Daniel E. Otzen and Kell K. Andersen 98 Rhamnolipid biosurfactants—past, present, and future scenario of global market Kamaljeet K. Sekhon Randhawa and Pattanathu K. S. M. Rahman 105 Rhamnolipids: Solution against Aedes aegypti? Vinicius L. Silva, Roberta B. Lovaglio, Claudio J. Von Zuben and Jonas Contiero 110 Bioemulsifiers are not biosurfactants and require different screening approaches Chibuzo Uzoigwe, J. Grant Burgess, Christopher J. Ennis and Pattanathu K. S. M. Rahman 116 Oil degradation and biosurfactant
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