Chemical characterization and physicochemical behavior of biosurfactants

Parra, J. L.; Guinea, J.; Manresa, Ángeles; Robert, M.; Mercadé, Montse; Comelles, F.; Bosch, María

doi:10.1007/bf02661805

Cited by 109 publications

(46 citation statements)

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“…Pseudomonas species is well known for its capability to produce rhamnolipid biosurfactant with potential surface active properties when grown on different carbon substrates (Parra et al, 1989;Koch et al, 1988;Mercade et al, 1993). Reports have been published on production of rhamnolipid biosurfactant from pure substrate (Santos er al., 1984;Mercade et ul., 1988;Santos et al, 1986), but kinetic studies on biosurfactant production from wastes are rarely published.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of biosurfactant production by Pseudomonas aeruginosa strain BS2 from industrial wastes

et al. 1996

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Batch kinetic studies were carried out on rhamnolipid biosurfactant production from synthetic medium, industrial wastes viz. distillery and whey waste as substrates. The results indicated that the specific growth rates & max) and specific product formation rates (V max) from both the wastes are comparatively better than the synthetic medium, revealing that both the industrial wastes (distillery and whey) can be successfully utilized as substrates for hiosurfactant production.

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Section: Introductionmentioning

confidence: 99%

Kinetics of biosurfactant production by Pseudomonas aeruginosa strain BS2 from industrial wastes

et al. 1996

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“…7,10-DHOD prepared in the Pseudomonas sp. 42A2 system exhibited a surface tension of 30 mN/m at 50 7C in distilled water [8] and, like 7,10-DHOD prepared in our laboratory [5], did not display the unusual surface tension as shown by 7,10,12-THOD. A detailed investigation of the surface tension properties of hydroxy fatty acids is in progress and will be reported later.…”

Section: Thementioning

confidence: 98%

“…We therefore began to investigate a reactor process designed for 7,10-DHOD [5] to produce gram quantities of 7,10,12-THOD by P. aeruginosa strain NRRL B-23260. In the production of 7,10-DHOD, a new aeration mechanism was used to deal with the coexistence of a hydrophobic substrate (OA) and the surface-active property of 7,10-DHOD [7,8], which were prone to foam formation. Namely, the typical aeration through a bottom sparger in a reactor vessel was replaced by a new arrangement that combined a constant airflow from two ports on the headplate and, when needed, through a bottom sparger, in conjunction with the use of marine impellers for agitation.…”

Section: Production Of 71012-thod In a Bioreactormentioning

confidence: 99%

“…Recently, the bioconversion reaction was scaled up in a 7-L bench-top, stirred-batch reactor to produce 7,10-DHOD in sufficient quantity for testing of potential industrial uses [5], such as the formation of rigid urethane foams from a soy polyol/7,10-DHOD hybrid [6]. Other properties associated with 7,10-DHOD are its ability to lower surface tension [7,8] and the inhibition of growth by Candida albicans [9].…”

Section: Introductionmentioning

confidence: 99%

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Production and properties of 7,10,12‐trihydroxy‐8(E)‐octadecenoic acid from ricinoleic acid conversion by Pseudomonas aeruginosa

Kuo

Knothe

2004

Euro J Lipid Sci & Tech

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Production and properties of 7,10,12-trihydroxy-8(E)-octadecenoic acid from ricinoleic acid conversion by Pseudomonas aeruginosa*This study was undertaken to produce a novel antifungal compound, 7,10,12-trihydroxy-8(E)-octadecenoic acid (7,10,, in large quantities for determining its properties by use of crude ricinoleic acid as converted by Pseudomonas aeruginosa NRRL B-23260. A useful reactor process was developed by employing a unique aeration mechanism and a new agitation device. The aeration mechanism involved a filtered airflow constantly supplied from the top through two ports on the headplate at 220 mL/min and at varied rates as needed and regulated through a bottom sparger, to control foaming. The agitation device combined a marine impeller and an open turbine to overcome the early phase of oxygen depletion and enhance production yields. A yield of 40% was achieved after 77 h of reaction when down-stream processing of the bioproduct was most suitable. 7,10,12-THOD was crystallized from ethyl acetate extracts of the reactor broth following a sequential cooling process to 220 7C. The melting point of 7,10,12-THOD was 94.5-95.0 7C. The 1 H-and 13C-NMR signals of all protons and carbons in the 2(E)-ene-1,4,6-triol moiety of 7,10,12-THOD were now assigned, also with the aid of various 2D techniques. 7,10,12-THOD was found to exhibit a unique surface-active property. This study provides basic information and process technology for potential new uses of 7,10,12-THOD.

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“…Different bacteria produce different classes of biosurfactants which serve varied purposes in the producer strains . Rhamnolipids are glycolipids biosurfactants produced by Pseudomonas aeruginosa, which emulsify oil and reduce the surface tension of water from 72 mN m −1 to around 25-30 mN m −1 (Itoh et al, 1971;Parra et al, 1989). They find applications in tertiary petroleum recovery , decontamination of marine oil pollution, soil remediation (Banat, 1995;Lotfabad et al, 2009) and crop protection (Stanghellini and Miller, 1997).…”

Section: Future Prospectsmentioning

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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Chemical characterization and physicochemical behavior of biosurfactants

Cited by 109 publications

References 10 publications

Kinetics of biosurfactant production by Pseudomonas aeruginosa strain BS2 from industrial wastes

Kinetics of biosurfactant production by Pseudomonas aeruginosa strain BS2 from industrial wastes

Production and properties of 7,10,12‐trihydroxy‐8(E)‐octadecenoic acid from ricinoleic acid conversion by Pseudomonas aeruginosa

Microbiotechnology Based Surfactants and Their Applications

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