Rhamnolipid Biosurfactants Produced by Pseudomonas Species

Kaşkatepe, Banu; Yıldız, Sulhiye

doi:10.1590/1678-4324-2016160786

Cited by 42 publications

(19 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The COD/BOD ratio of 1.34 indicates high biodegradability and that the vinasse constituents may be used by bacteria as substrate for biosurfactant production. Kaskatepe and Yildiz [ 14 ] reported some studies on rhamnolipid production using agroindustry residues as substrates, mostly conducted with molasses, a sugar production industry byproduct with high sucrose concentration (50–55% w/w). The use of vinasse as a substrate was only found in the study by Oliveira and Garcia-Cruz [ 30 ], which obtained 27.7 g/L of biosurfactant in the fermentation of Bacillus pumilus with 5% vinasse after 48 h.…”

Section: Resultsmentioning

confidence: 99%

“…The use of vinasse as raw material for biosurfactant production (rhamnolipids) in the stage previous to its treatment and disposal seems to be an interesting alternative technology, since it helps reduce the organic matter concentration introduced into the soil and, at the same time, obtains a high-value product with vast potential in industrial applications [ 12 , 13 ]. In general, agroindustrial waste containing high levels of carbohydrates can serve as a carbon source for biosurfactant production [ 14 ]. The use of these alternative substrates presents some challenges, such as the difficulty of finding the right nutrient composition that enables the synthesis of the product of interest, residue standardization (due to natural composition variations), and costs inherent to the process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bioconversion of Sugarcane Vinasse into High-Added Value Products and Energy

Naspolini

Machado

Cravo

et al. 2017

BioMed Research International

View full text Add to dashboard Cite

Vinasse, a residue from bioethanol production containing high organic matter concentration, was used as substrate in submerged fermentation of Pseudomonas aeruginosa PA1 for biosurfactant production. About 2.7 g/L of rhamnolipids was obtained, with surface tension of 29.2 mN/m and critical micelle concentration of 80.3 mg/L. After separation of rhamnolipid and biomass, residual fermentation media were submitted to anaerobic biodegradation in mesophilic conditions. The residual medium derived from fermentation with vinasse diluted to 1 : 1, without addition of nitrogen, C : N 21, and for 168 h, led to 63.2% chemical oxygen demand (COD) removal and 97.6 mL CH4/g CODremoved. Compared to results obtained with fresh vinasse (73.7% COD removal and 112.4 mL CH4/g CODremoved), it could be concluded that both processes can be integrated in order to add value to the residue and obtain energy, reducing production costs and at the same time environmental impacts related to vinasse disposal.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bioconversion of Sugarcane Vinasse into High-Added Value Products and Energy

Naspolini

Machado

Cravo

et al. 2017

BioMed Research International

View full text Add to dashboard Cite

show abstract

“…One of the most important strategies for increasing the production of bacterial biosurfactants is by optimizing the culture medium in which the mixture of oily compounds, carbon sources, and nitrogen sources are evaluated to increase biosurfactant synthesis (Kaskatepe and Yildiz, ). The microorganisms producing biosurfactants are only effective if ideal nutritional and environmental conditions are maintained (Najafi et al, ).…”

Section: Introductionmentioning

confidence: 99%

Biosurfactants Production Using Permeate from Whey Ultrafiltration and Bioproduct Recovery by Membrane Separation Process

Decesaro

Machado

Cappellaro

et al. 2020

J Surfact & Detergents

View full text Add to dashboard Cite

The management of whey is a challenge for dairy products where the volume produced is remarkable. This problem is minimized through membrane separation processes (MSP) to obtain whey protein concentrate, which has high added value. However, a permeate effluent stream is still generated that is composed of lactose, vitamins, and minerals, which can serve as raw material for the production of biotechnological compounds. Thus, this study aimed to produce biosurfactants using the permeate from whey ultrafiltration as part of the culture media of the bioprocess, to recover the biosurfactant produced using MSP, and to identify the biocompound. The production was carried out using Bacillus methylotrophicus and Bacillus pumilus. The variables nitrogen source (urea or ammonium sulfate), nitrogen source concentration (0.5% or 1.0%), inducer (soybean oil or biodiesel), inducer concentration (1% or 2%), and the addition of micronutrients (with our without) were studied using a fractional factorial experimental design 2 5-1 IV . In the fermentation processes, it was possible to verify the biosurfactant production through the reduction of surface tension, obtaining a minimum value of 35.07 mN/m for B. methylotrophicus and 26.02 mN/m for B. pumilus. Recovery via MSP was an efficient strategy for biosurfactant purification, which was concentrated in the fraction of the retentate. We produced a high-value-added biocompound identified as surfactin, valuing the permeate residue from whey ultrafiltration.Results of mean AE standard deviation. Equal letters in the same column indicate that they did not present a significant difference at the 95% confidence level. RBC, relation between final and initial biomass concentration; RST, relation between initial and final surface tension; T, treatment. J Surfact DetergJ Surfact Deterg (2020) 23: 539-551Equal letters in the same column and for each microorganism indicate that they did not present a significant difference at the 95% confidence level. MSP, membrane separation processes. 547 J Surfact Deterg J Surfact Deterg (2020) 23: 539-551

show abstract

“…They contain synthetic chemicals and can cause skin irritation or harm the environment. Rhamnolipids are biosurfactants, which are of biological origin and have many advantages over synthetic counterparts, such as low toxicity and high biodegradability (Jahan et al, 2020;Kaskatepe and Yildiz, 2016;Madrid et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Rhamnolipids for the Inactivation of Enveloped Viruses

Jin

Black

Sawyer

2020

Preprint

View full text Add to dashboard Cite

Abstract In the face of new emerging respiratory viruses, such as SARS-CoV2, vaccines, and drug therapies are not immediately available to curb the spread of the infection. Non-pharmaceutical interventions, such as mask-wearing and social distance, can slow the transmission. However, both mask and social distance are not 100% effective at preventing the spread of respiratory viruses, such as SARS-CoV2 and influenza viruses. There is an urgent need to develop an intervention that could reduce the spread of respiratory viruses. Rhamnolipids are environmentally friendly and biologically safe surfactants that can kill enveloped viruses. Two rhamnolipid products, 222A and 222B, were investigated in this study to determine their ability to inactivate two enveloped viruses, bovine coronavirus and herpes simplex virus 1. We found that 222B at 0.005%, which has no toxicity to cells, can inactivate 105 PFU/ml enveloped viruses in 3-5 min. Moreover, 50-100µl of 222B at 0.005% on 1 cm2 mask fabrics can inactivate ~ 103 PFU /10 µl in 3-5 min. These results suggest that 222B can be coated on masks to prevent or reduce the spread of enveloped viruses.

show abstract

Rhamnolipid Biosurfactants Produced by Pseudomonas Species

Abstract: Surfactants are chemical products widely used in our daily

Cited by 42 publications

References 86 publications

Bioconversion of Sugarcane Vinasse into High-Added Value Products and Energy

Bioconversion of Sugarcane Vinasse into High-Added Value Products and Energy

Biosurfactants Production Using Permeate from Whey Ultrafiltration and Bioproduct Recovery by Membrane Separation Process

Characterization of Rhamnolipids for the Inactivation of Enveloped Viruses

Contact Info

Product

Resources

About