Biological activities of a mixture of biosurfactant from Bacillus subtilis and alkaline lipase from Fusarium oxysporum

Quadros, Cedenir Pereira de; Duarte, Marta Cristina Teixeira; Pastore, Gláucia Maria

doi:10.1590/s1517-83822011000100045

Cited by 16 publications

(5 citation statements)

References 23 publications

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“…They could be produced from renewable resources (micro-organisms, plants and animal oils) and petrochemical feedstock [1] as well as reduced surface tension in both aqueous and hydrocarbon [2]. Biosurfactants possess many advantages such as selectivity, diversity, appropriate for large-scale production and environment-friendly nature over their chemically synthesized counterparts [3]. Amani et al [4]; Singh et al [5]; Kruijt et al [6], reported a considerable number of rhizosphere and plant associated microbes involved in biosurfactant production and their application in agriculture.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Biosurfactant Using Different Extraction Solvent by Rhizospheric Bacteria Isolated from Rice-husk and Poultry Waste Biochar Amended Soil

Adebajo

Akintokun

Ojo

et al. 2020

Egyptian Journal of Basic and Applied Sciences

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Biochar is a stable solid material made from biomass via pyrolysis and can endure in soil for thousands of years. The present study aimed to evaluate the potential of rhizospheric microorganisms in rice-husk and poultry waste biochar-amended soil for biosurfactant production. Rhizospheric microorganisms in biochar-amended soil were isolated and screened for biosurfactant production using different screening methods. Potential rhizospheric bacteria was used to produce biosurfactant using different recovery techniques and its hydrocarbon degrading efficiency was determined. A total of 41 rhizospheric bacteria were recovered from biochar-amended soil. Pseudomonas and Bacillus spp were the dominant isolates. Pseudomonas putida showed best biosurfactant potential isolates from the different screening results and was used to produce biosurfactant. Chloroform-methanol showed good recovery solvent for biosurfactant extraction. Chloroform/methanol (2:1) gave the highest quantity (3.15 ± 0.26) g/L of biosurfactant while ethyl acetate produced the least yield of biosurfactant (1.13 ± 0.82) g/L. Pseudomonas putida also showed the potential to degrade hydrocarbon over a period of 10 days. The results obtained revealed that potential isolates for biosurfactant production and efficient hydrocarbon degraders could be recovered from rice-husk and poultry waste biochar-amended soil.

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Section: Introductionmentioning

confidence: 99%

Recovery of Biosurfactant Using Different Extraction Solvent by Rhizospheric Bacteria Isolated from Rice-husk and Poultry Waste Biochar Amended Soil

Adebajo

Akintokun

Ojo

et al. 2020

Egyptian Journal of Basic and Applied Sciences

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“…Although the ideal condition for biosurfactant production is a medium like MSSO, Bacillus can still produce biosurfactants in the BHI medium, as reported previously 75 . Moreover, numerous studies have employed BHI as an effective medium for biosurfactant production by different bacteria types [76][77][78][79] . In previous investigations, BHI was proven to be effective in cultivating G. Stearothermophilus under harsh conditions 13,69,71,72 .…”

Section: Cultivation Of Bacteriamentioning

confidence: 99%

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

Abdi,

Ranjbar,

Kazemzadeh

et al. 2024

Sci Rep

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In the enhanced oil recovery (EOR) process, interfacial tension (IFT) has become a crucial factor because of its impact on the recovery of residual oil. The use of surfactants and biosurfactants can reduce IFT and enhance oil recovery by decreasing it. Asphaltene in crude oil has the structural ability to act as a surface-active material. In microbial-enhanced oil recovery (MEOR), biosurfactant production, even in small amounts, is a significant mechanism that reduces IFT. This study aimed to investigate fluid/fluid interaction by combining low biosurfactant values and low-salinity water using NaCl, MgCl2, and CaCl2 salts at concentrations of 0, 1000, and 5000 ppm, along with Geobacillus stearothermophilus. By evaluating the IFT, this study investigated different percentages of 0, 1, and 5 wt.% of varying asphaltene with aqueous bulk containing low-salinity water and its combination with bacteria. The results indicated G. Stearothermophilus led to the formation of biosurfactants, resulting in a reduction in IFT for both acidic and basic asphaltene. Moreover, the interaction between asphaltene and G. Stearothermophilus with higher asphaltene percentages showed a decrease in IFT under both acidic and basic conditions. Additionally, the study found that the interaction between acidic asphaltene and G. stearothermophilus, in the presence of CaCl2, NaCl, and MgCl2 salts, resulted in a higher formation of biosurfactants and intrinsic surfactants at the interface of the two phases, in contrast to the interaction involving basic asphaltene. These findings emphasize the dependence of the interactions between asphaltene and G. Stearothermophilus, salt, and bacteria on the specific type and concentration of asphaltene.

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“…Useful microorganisms from the rhizo- and phyllospheres are capable of synthesizing complex active BAS, including antibiotics of various chemical classes, enzymes and metabolites with signaling and hormonal functions [ 81 , 82 , 83 , 84 ]. Auxins, gibberellins, cytokin-ins, abscisic (ABA), salicylic and jasmonic acids synthesized by microbial strains are found to be natural growth regulators [ 85 , 86 ].…”

Section: Discussionmentioning

confidence: 99%

New Polyfunctional Biorationals Use to Achieve Competitive Yield of Organic Potatoes in the North-West Russian Ecosystem

Novikova

Minin

Titova

et al. 2022

Plants

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To increase the organic potato yield, it is necessary to provide the crop with sufficient nutrients and effective means of biocontrol the diseases. The research goal was to characterize the biorationals’ efficacy to achieve competitive organic potatoes’ yield under various weather conditions. A 4-year trial was carried out in the Leningrad region using Udacha variety potatoes. The tests used liquid forms of new polyfunctional biologicals Kartofin based on highly active Bacillus subtilis I-5-12/23 and organic fertilizer BIAGUM obtained from poultry manure by aerobic fermentation in a closed biofermenter. Significant stimulation in plant growth and development to the flowering phase regardless of the hydrothermal conditions of the growing season was noted. The stimulating effect was determined by the combined use of biorationals pro rata to BIAGUM dose. Kartofin biologicals and BIAGUM almost doubled the potato tubers’ yield compared to the control, regardless of the growing season conditions. At the flowering phase, the biological efficacy in potato fungal diseases incidence and development was near 90% under optimal and 50–75% under drought hydrothermal conditions. At the end of vegetation, the efficiency in fungal diseases incidence and development made up 45–65% under optimal and 45–70% under dry conditions. BIAGUM effectiveness in reducing disease development reached 45–50% regardless of growing season conditions.

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Biological activities of a mixture of biosurfactant from Bacillus subtilis and alkaline lipase from Fusarium oxysporum

Abstract: In this study, we investigate the antimicrobial effects of a mixture of a biosurfactant from Bacillus subtilis

Cited by 16 publications

References 23 publications

Recovery of Biosurfactant Using Different Extraction Solvent by Rhizospheric Bacteria Isolated from Rice-husk and Poultry Waste Biochar Amended Soil

Recovery of Biosurfactant Using Different Extraction Solvent by Rhizospheric Bacteria Isolated from Rice-husk and Poultry Waste Biochar Amended Soil

Investigating the mechanism of interfacial tension reduction through the combination of low-salinity water and bacteria

New Polyfunctional Biorationals Use to Achieve Competitive Yield of Organic Potatoes in the North-West Russian Ecosystem

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