Chemical characterization and surface properties of a new bioemulsifier produced by Pedobacter sp. strain MCC-Z

Beltrani, Tiziana; Chiavarini, Salvatore; Cicero, Do; Grimaldi, Maria Grazia; Ruggeri, Claudio; Tamburini, Elena; Cremisini, Carlo

doi:10.1016/j.ijbiomac.2014.10.025

Cited by 20 publications

(12 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Extended stability in time has been previously observed for the BE produced by marine Pedobacter sp. strain MCC-Z where the emulsions remained stable for 4 months [ 42 ] and for the bioemulsifiers produced by a marine Antarctobacter [ 32 ]. However, to the best of our knowledge, no reports on extended stability under low water activity, after thermal treatment conditions or 30 months are available and especially from nonpathogenic marine bacteria such as Marinobacter sp.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, they are in agreement with BE/BS produced by different bacterial species like the purified bioemulsifier produced by Pedobacter sp. strain MCC-Z, a glycolipids-protein complex, that showed high emulsifying activity (EI 24 = 64%) and reduced the surface tension of water up to 41 mN/m with a critical micelle concentration value of 2600 mg/l [ 42 ]. The comparison with Marinobacter sp.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Marinobacter sp. from marine sediments produce highly stable surface-active agents for combatting marine oil spills

et al. 2017

View full text Add to dashboard Cite

BackgroundThe application of chemical dispersants as a response to marine oil spills is raising concerns related to their potential toxicity also towards microbes involved in oil biodegradation. Hence, oil spills occurring under marine environments necessitate the application of biodispersants that are highly active, stable and effective under marine environment context. Biosurfactants from marine bacteria could be good candidates for the development of biodispersant formulations effective in marine environment. This study aimed at establishing a collection of marine bacteria able to produce surface-active compounds and evaluating the activity and stability of the produced compounds under conditions mimicking those found under marine environment context.ResultsA total of 43 different isolates were obtained from harbor sediments. Twenty-six of them produced mainly bioemulsifiers when glucose was used as carbon source and 16 were biosurfactant/bioemulsifiers producers after growth in the presence of soybean oil. Sequencing of 16S rRNA gene classified most isolates into the genus Marinobacter. The produced emulsions were shown to be stable up to 30 months monitoring period, in the presence of 300 g/l NaCl, at 4 °C and after high temperature treatment (120 °C for 20 min). The partially purified compounds obtained after growth on soybean oil-based media exhibited low toxicity towards V. fischeri and high capability to disperse crude oil on synthetic marine water.ConclusionsTo the best of our knowledge, stability characterization of bioemulsifiers/biosurfactants from the non-pathogenic marine bacterium Marinobacter has not been previously reported. The produced compounds were shown to have potential for different applications including the environmental sector. Indeed, their high stability in the presence of high salt concentration and low temperature, conditions characterizing the marine environment, the capability to disperse crude oil and the low ecotoxicity makes them interesting for the development of biodispersants to be used in combatting marine oil spills.Electronic supplementary materialThe online version of this article (10.1186/s12934-017-0797-3) contains supplementary material, which is available to authorized users.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Marinobacter sp. from marine sediments produce highly stable surface-active agents for combatting marine oil spills

et al. 2017

View full text Add to dashboard Cite

show abstract

“…A summary of such ndings is shown in Table 1, along with their identied bioemulsier compositions. Bacterial trains belonging to genera including Acinetobacter, 12 Aeribacillus, 13 Alcaligenes, 14 Amycolatopsis, 15 Azotobacter, 16 Bacillus, 17 Beijerinckia, 18 Corynebacterium, 19 Enterobacter, 20 Geobacillus, 13 Halomonas, 21 Klebsiella, 22 Myroides, 23 Pedobacter, 24 Propionibacterium, 25 Pseudomonas, 26 Solibacillus, 27 Streptomyces, 28 Variovorax, 29 have been reported to be bioemulsier producers (Table 1). To date, however, no strains belong to the genus of Exiguobacterium have been reported as bioemulsier producers.…”

Section: Introductionmentioning

confidence: 99%

A novel bioemulsifier produced by Exiguobacterium sp. strain N4-1P isolated from petroleum hydrocarbon contaminated coastal sediment

et al. 2017

View full text Add to dashboard Cite

In this study, Exiguobacterium N4-1P is reported as a bioemulsifier producer for the first time. The strain was found to be closely related to E. oxidotolerans strain T-2-2 T , E. antarcticum B7 T , and E. antarcticum B7 T with similarities of 99.47, 98.70 and 98.63%, respectively. Its phenotypic properties such as metabolic fingerprints, membrane composition, and cell morphology were determined. Different carbon sources were used for bioemulsifier production and diesel was confirmed to stimulate the yield effectively. The produced bioemulsifier is a complex mainly composed of lipopeptides with C16:0 (32.18%) and C18:0 (40.99%) as the primary fatty acids. The produced bioemulsifier could form emulsions effectively with diverse hydrocarbons. No foams were formed during the production and applications, which would facilitate its commercialization. The bioemulsifier was stable over a wide range of salinity (0-25%), pH (2-12), and temperature (below 50 C). Exiguobacterium N4-1P and the produced bioemulsifier fills knowledge gaps and has promising application potential in diverse fields, especially in environmental engineering.

show abstract

“…Los BE tienen varias ventajas sobre los emulsificantes sintéticos. Los BEs son biodegradables y no representan riesgo al ambiente, además, existe evidencia que estos no son tóxicos para otros microorganismos y por lo tanto no inhiben la biodegradación de los contaminantes orgánicos (Beltrani et al 2015).…”

Section: Biorremediación De Sitios Contaminados Con Hidrocarburosunclassified

“…Las lecturas se realizaron a) 600 nm; y b) 276 nm, cada valor corresponde a la media de seis réplicas ± desviaciones estándar (barras de error), con post-hoc Tukey, en donde letras diferentes (mayúsculas y minúsculas) indican diferencia significativa (α = 0.05); y c) Barrido espectrofotométrico de las mezclas de hidrocarburos. Beltrani et al, (2015) también reportaron especificidad por ciertos hidrocarburos cuando utilizaron Tween 80 y Triton X-100 y los compararon contra el BE EPS, Pdb-Z, producido por Pedobacter sp. MCC-Z.…”

Section: Emulsificación De Hpas Y Estabilidad Cinética De Emulsionesunclassified

Producción, caracterización parcial y evaluación de la capacidad emulsificante de hidrocarburos del biomulsificante de acinetobacter bouvetii UAM25

Vázquez

View full text Add to dashboard Cite

A mi amada madre, por su sabiduría y oración. A Harlen, por siempre estar a mi lado en las buenas y en las malas. A Marianito, por creer en mí, ser un guía y mostrarme lo que es vivir la ciencia con pasión. A mis hermanitos académicos; Nes, Peusa y Vik, por apoyarme y darme ánimos, sin importar la distancia. A Tania, por siempre estar cuando necesité consejo. Al CONACyT por el apoyo económico. Y a todo aquel que confió y me apoyó para lograr este paso, cuyo nombre esta noche no recuerdo, si lees esto haz reclamo con una sonrisa cuando me veas y te agradeceré con una mueca.

show abstract

Chemical characterization and surface properties of a new bioemulsifier produced by Pedobacter sp. strain MCC-Z

Cited by 20 publications

References 38 publications

Marinobacter sp. from marine sediments produce highly stable surface-active agents for combatting marine oil spills

Marinobacter sp. from marine sediments produce highly stable surface-active agents for combatting marine oil spills

A novel bioemulsifier produced by Exiguobacterium sp. strain N4-1P isolated from petroleum hydrocarbon contaminated coastal sediment

Producción, caracterización parcial y evaluación de la capacidad emulsificante de hidrocarburos del biomulsificante de acinetobacter bouvetii UAM25

Contact Info

Product

Resources

About