Isolation and characterization of trehalose tetraester biosurfactants from a soil strain Micrococcus luteus BN56

Tuleva, Borjana; Christova, Nelly; Cohen, R.; Antonová, Daniela; Todorov, Tihomir; Stoineva, Ivanka

doi:10.1016/j.procbio.2008.09.016

Cited by 51 publications

(23 citation statements)

References 25 publications

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“…previous literature (Tuleva et al 2009;Singh et al 2011). However, the cell-free supernatant could merely reduce the SFT of MS medium from 70AE5 ± 0AE1 to 45AE7 ± 0AE1 mN m )1 .…”

Section: Production and Isolation Of Bioemulsifiermentioning

confidence: 74%

Characterization and emulsifying property of a novel bioemulsifier by Aeribacillus pallidus YM-1

Chang

et al. 2012

Journal of Applied Microbiology

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Aims: Biosurfactants and bioemulsifiers commonly have the advantages of biodegradability, low toxicity, selectivity and biocompatibility over chemically synthesized surfactants. The goal of the study is to present a novel bioemulsifier with great application potential. Methods and Results: Aeribacillus pallidus YM‐1, isolated from crude oil contaminated soil, was found to produce a novel high molecular bioemulsifier with an emulsification index of 60 ± 1% without remarkable surface tension reduction (45·7 ± 0·1 mN m−1). The number‐average molecular weight was determined as 526 369 Da by gel permeation chromatography analysis. Bioemulsifier was subjected to FT‐IR and a complex of carbohydrates (41·1%), lipids (47·6%) and proteins (11·3%) was determined. Conclusions: The bioemulsifier of A. pallidus YM‐1 was isolated from the glucose‐based culture medium and characterized with the help of chemical analytical techniques. The bioemulsifier exhibited a promising emulsifying property for biotechnology application potential in bioremediation and microbial enhanced oil recovery. Significance and Impact of the Study: This is the first report of the bioemulsifier production by A. pallidus. The potential emulsifying activity of the bioemulsifier in the present study may be explored in various biotechnological and industrial applications.

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“…previous literature (Tuleva et al 2009;Singh et al 2011). However, the cell-free supernatant could merely reduce the SFT of MS medium from 70AE5 ± 0AE1 to 45AE7 ± 0AE1 mN m )1 .…”

Section: Production and Isolation Of Bioemulsifiermentioning

confidence: 74%

Characterization and emulsifying property of a novel bioemulsifier by Aeribacillus pallidus YM-1

Chang

et al. 2012

Journal of Applied Microbiology

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“…Several authors have reported diesel oil and crude oil as excellent substrates for microbial growth and also for biosurfactant production (Ilori et al, 2005;Adebusoye, Ilori, Amund, Teniola, & Olatope, 2007). Tuleva et al (2009) reported the production of rhamnolipids by P. putida 21BN when grown on n-hexadecane, while Kumar et al (2006) showed that P. putidaIR1 also produced biosurfactants upon its growth on 2-, 3-and 4-ring PAHs, but not hexadecane and octadecane, as a sole carbon and energy source. Partial biochemical characterization of the biosurfactants produced by these isolates indicated they were heteropolymers.…”

Section: Discussionmentioning

confidence: 99%

The emulsifying effect of biosurfactants produced by food spoilage organisms in Nigeria

Ogunmola

Aboaba²

2016

IJFS

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Food spoilage organisms were isolated using standard procedures on Nutrient Agar, Cetrimide Agar and Pseudomonas Agar Base (supplemented with CFC). The samples were categorized as animal products (raw fish, egg, raw chicken, corned beef, pasteurized milk) and plant products (vegetable salad, water leaf (Talinium triangulare), boiled rice, tomatoes and pumpkin leaf (Teifairia occidentalis).They were characterised as Pseudomonas

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“…Surfactants able to decrease the surface tension can have several effects. Micelle action increases the solubility of the pollutants and the reduction of the interfacial tension between the aqueous and non-aqueous phases increases the contact surface area (Tuleva et al 2009). Apart from the industrial applications of biosurfactants envisaged, their application in the oil industry is one of the potential uses, which require lower purity specifications so that whole culture broth could be used (Van Hamme et al 2006).…”

Section: Preliminary Chemical Characteristics Of Biosurfactantmentioning

confidence: 99%

Laboratory production and characterization of a new biosurfactant from Candida glabrata UCP1002 cultivated in vegetable fat waste applied to the removal of hydrophobic contaminant

Gusmão

Rufino

Sarubbo

2010

World J Microbiol Biotechnol

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Biosurfactant production by Candida glabrata was studied using vegetable fat waste as substrate. A factorial design was initially carried out to investigate the effects and interactions of waste, yeast extract and glucose on the surface tension after 144 h cultivation. Maximum surface tension reduction was achieved with vegetable fat waste at 5% and yeast extract at 0.2%. The biosurfactant containing cell-free broth retained its surface-active properties after incubation at high temperatures, at a wide range of pH values and salt concentrations. Comparison between three solvent systems for surfactant recovery showed that ethyl acetate extracted both crude extracellular and intracellular biosurfactant with high product recovery. The isolated extracellular biosurfactant showed a CMC of 1% and the surface tension at that point was 24 mN m -1 . Preliminary chemical composition revealed the presence of carbohydrates, proteins and lipids. The application of the crude biosurfactant to a soil-water-hydrophobic contaminant system was investigated and the apparent critical micelle concentration was determined at 7% of the broth, although the best oil removal (92.6%) had been obtained with 10% of the cell-free broth. The cost of application of the biosurfactant in soils was estimated based on the cost of a commercial biosurfactant.

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Isolation and characterization of trehalose tetraester biosurfactants from a soil strain Micrococcus luteus BN56

Cited by 51 publications

References 25 publications

Characterization and emulsifying property of a novel bioemulsifier by Aeribacillus pallidus YM-1

Characterization and emulsifying property of a novel bioemulsifier by Aeribacillus pallidus YM-1

The emulsifying effect of biosurfactants produced by food spoilage organisms in Nigeria

Laboratory production and characterization of a new biosurfactant from Candida glabrata UCP1002 cultivated in vegetable fat waste applied to the removal of hydrophobic contaminant

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