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Ghafghazi L, Taghavi L, Rasekh B, Farahani H, Hassani AH. Application of compost assisted by Fe 3O 4 nanoparticles in di (2-ethylhexyl) phthalate-contaminated soil remediation: Biostimulation strategy, Soil responses, and RSM/CCD Optimization. Sci Total Environ 2024; 908:168029. [PMID: 37898188 DOI: 10.1016/j.scitotenv.2023.168029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/01/2023] [Accepted: 10/20/2023] [Indexed: 10/30/2023]
Abstract
Globally, contamination of agricultural soils by phthalate esters (PAEs) caused by direct consumption of plastic mulch films has been confirmed. The most widely used plasticizer is di (2-ethylhexyl) phthalate (DEHP), which is a more recalcitrant endocrine-disrupting chemical (EDC). Because of its low solubility and hydrophobicity, it remains in the soil longer, causes bioaccumulation in agricultural products, and has negative repercussions for food safety. In this study, the performance of kitchen organic waste compost assisted by Fe3O4 nanoparticles in DEHP removal efficiency (%) and soil C:N ratio (two responses) was optimized using Response Surface Methodology (RSM) based on Central Composite Design (CCD) in Design-Expert software (11.0.3.0). Under optimum conditions, a DEHP concentration of 10 mg·kg-1 (dw soil), a retention time of 35 days, an NPs dose of 0.99 g·kg-1 (media), a removal efficiency of 91.6 %, and a soil C:N ratio of 10.5 with a desirability of 0.963 were determined. A quadratic model (P-value <0.0001, adjusted R2 = 0.974 (Y1), 0.943 (Y2)) was used to predict the variables and their interactions. The agricultural soil responses in the treatments amended by compost and Fe3O4 NPs (SCN) showed a significant increase in SOM, TC, TN, AP, K, and Fe nutrients when compared to the control (P < 0.05). After 35 days, in the SC1N3 treatment (DEHP concentration = 10 mg·kg-1, NPs dose =1.2 g·kg-1), with higher DEHP removal efficiency (89.57 %), the C:N:P ratio was equal to 100: 9.75:0.69, and the total microbial colony count was 3.6 × 109 CFU/ml at pH 7.45. The study found that compost nutrients and Fe-based nanoparticle micronutrients can enhance DEHP degradation by stimulating the soil's native microflora. As a result, the synergistic potential of compost and Fe3O4 nanoparticles can be considered a promising, cost-effective, and agri-environmentally friendly approach in the "assisted bioremediation" strategy of DEHP-contaminated soils.
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Affiliation(s)
- Laleh Ghafghazi
- Department of Environmental Science and Forest, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University (SRBIAU), P. O. Box 14515-775, Tehran, Iran
| | - Lobat Taghavi
- Department of Environmental Science and Forest, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University (SRBIAU), P. O. Box 14515-775, Tehran, Iran.
| | - Behnam Rasekh
- Environment & Biotechnology Division, Research Institute of Petroleum Industry (RIPI), P. O. Box: 14665-137, Tehran, Iran
| | - Hadi Farahani
- Research Institute of Petroleum Industry (RIPI), P. O. Box 1485733111, Tehran, Iran
| | - Amir Hessam Hassani
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Ghaedizadeh S, Zeinali M, Dabirmanesh B, Rasekh B, Khajeh K, Banaei-Moghaddam AM. Rational design engineering of a more thermostable Sulfurihydrogenibium yellowstonense carbonic anhydrase for potential application in carbon dioxide capture technologies. Biochim Biophys Acta Proteins Proteom 2024; 1872:140962. [PMID: 37716447 DOI: 10.1016/j.bbapap.2023.140962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/18/2023] [Accepted: 09/06/2023] [Indexed: 09/18/2023]
Abstract
Implementing hyperthermostable carbonic anhydrases into CO2 capture and storage technologies in order to increase the rate of CO2 absorption from the industrial flue gases is of great importance from technical and economical points of view. The present study employed a combination of in silico tools to further improve thermostability of a known thermostable carbonic anhydrase from Sulfurihydrogenibium yellowstonense. Experimental results showed that our rationally engineered K100G mutant not only retained the overall structure and catalytic efficiency but also showed a 3 °C increase in the melting temperature and a two-fold improvement in the enzyme half-life at 85 °C. Based on the molecular dynamics simulation results, rearrangement of salt bridges and hydrogen interactions network causes a reduction in local flexibility of the K100G variant. In conclusion, our study demonstrated that thermostability can be improved through imposing local structural rigidity by engineering a single-point mutation on the surface of the enzyme.
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Affiliation(s)
- Shima Ghaedizadeh
- Laboratory of Genomics and Epigenomics (LGE), Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Majid Zeinali
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry (RIPI), Tehran, Iran.
| | - Bahareh Dabirmanesh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
| | - Khosrow Khajeh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Mohammad Banaei-Moghaddam
- Laboratory of Genomics and Epigenomics (LGE), Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran.
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3
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Ahsani Arani Y, Noormohammadi Z, Rasekh B, Yazdian F, kazemi H. Evaluation of SDS‐coated iron nanostructure on the gene expression of bio surfactant‐producing genes by
Pseudomonas aeruginosa. Eng Life Sci 2022; 22:584-593. [PMID: 36093361 PMCID: PMC9444714 DOI: 10.1002/elsc.202200002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 06/22/2022] [Accepted: 07/27/2022] [Indexed: 11/08/2022] Open
Abstract
Bio surfactants are natural surfactants that induce emulsification, displacement, increased solubility, and mobility of hydrophobic organic compounds. In this study, the gene expression of biosurfactant production genes by Pseudomonas aeruginosa in the presence of sodium dodecyl sulfate coated iron nanostructure (Fe/SDS) were evaluated. Emulsification Index and Surface Tension reduction test to check stability and emulsification the rhamnolipid were done. Purification was evaluated using thin layer chromatography (TLC) and expression of rhlA, mvfR, lasR, rhlR genes was determined using q‐PCR technique. Binding of nanoparticles to bio surfactants was confirmed by TEM. The best emulsification index, was by the sample that exposed to 1 mg/L Fe/SDS nanoparticles for 2 days. Rhamnolipid produced in the presence of nanoparticles had an acceptable ability to reduce surface tension. The Rf (retention factor) value obtained was 0.63 by chromatography. q‐PCR results showed that the expression of rhlA, mvfR, lasR, rhlR genes was significantly increased in Fe/SDS treated cells, which indicates the significant positive effect (P < 0.05) of nanoparticles on biosurfactant production of treated cells. While, SDS and Fe alone were not affected significantly (P > 0.05) on the expression of these genes. Our findings indicated the importance of nanoparticles in increasing the expression of genes involved in the bio surfactant production pathway of Pseudomonas aeruginosa.
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Affiliation(s)
- Yaser Ahsani Arani
- Department of Biology Science and Research Branch Islamic Azad University Tehran Iran
| | - Zahra Noormohammadi
- Department of Biology Science and Research Branch Islamic Azad University Tehran Iran
| | - Behnam Rasekh
- Environment & Biotechnology Research Division Research Institute of Petroleum Industry (RIPI) Tehran Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering Faculty of New Science and Technologies University of Tehran Tehran Iran
| | - Hojjat kazemi
- Analytical Chemistry Research Group Research Institute of Petroleum Industry (RIPI) Tehran Iran
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Kalajahi ST, Mofradnia SR, Yazdian F, Rasekh B, Neshati J, Taghavi L, Pourmadadi M, Haghirosadat BF. Inhibition performances of graphene oxide/silver nanostructure for the microbial corrosion: molecular dynamic simulation study. Environ Sci Pollut Res Int 2022; 29:49884-49897. [PMID: 35220537 DOI: 10.1007/s11356-022-19247-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 02/11/2022] [Indexed: 05/06/2023]
Abstract
Steel is one of the mainly used materials in the oil and gas industry. However, it is susceptible to the marine corrosion, which 20% of the total marine corrosion is caused by microbiologically influenced corrosion (MIC). The economic and environmental impacts of corrosion are significant, and it is crucial to fight against corrosion in a proper sustainability context and environmental-friendly methods. In this study, the graphene oxide/silver nanostructure (GO-Ag) inhibitory effect on the corrosion of steel in the presence of sulfate reducing bacteria (SRB) was investigated, via weight loss (WL) and Tafel polarization measurements. Moreover, molecular dynamic (MD) simulations were performed to obtain a deep understanding of the corrosion inhibition effect of GO-Ag. GO-Ag showed a significant antibacterial effect at 80 ppm. Moreover, WL and Tafel polarization measurements illustrated a great inhibition efficiency, which reached up to 84% reduction of WL and 98% reduction of corrosion current density (Icorr) after 7 days of incubation with GO-Ag. Based on MD simulations, bonding energy reached to the larger value in the presence of GO-Ag, which indicated the ability of graphene oxide nanosheets to be adsorbed on the steel surface and prevent the access of corrosive agents to the steel surface. The radial distribution function (RDF) results implied distance between corrosive agent (water and SRB) and steel surface (Fe atoms), which indicated protection of the steel surface due to the effective adsorption of GO nanosheets through the active sites of the steel surface. The mean square displacement (MSD) result showed smaller displacement of the corrosive particles on the surface of steel, resulting that the GO-Ag molecules bonded with Fe molecules on the surface of steel.
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Affiliation(s)
- Sara Taghavi Kalajahi
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Science and Technologies, University of Tehran, North Kargar Street, 1439957131, Tehran, Iran.
| | - Behnam Rasekh
- Environment and Biotechnology Division, West Blvd. of Azadi Sport Complex, Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-137, Tehran, Iran
| | - Jaber Neshati
- Energy and Environment Research Center, West Blvd. of Azadi Sport Complex, Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-137, Tehran, Iran
| | - Lobat Taghavi
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mehrab Pourmadadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Bibi Fatemeh Haghirosadat
- Medical Nanotechnology & Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Department of Advanced Medical Sciences and Technologies, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Akbari E, Rasekh B, Maal KB, Karbasiun F, Yazdian F, Emami-Karvani Z, Peighami R. A novel biosurfactant producing Kocuria rosea ABR6 as potential strain in oil sludge recovery and lubrication. AMB Express 2021; 11:131. [PMID: 34550485 PMCID: PMC8458513 DOI: 10.1186/s13568-021-01283-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/19/2021] [Indexed: 11/10/2022] Open
Abstract
Biosurfactants are amphiphilic molecules composed of a hydrophilic and hydrophobic moiety and had the ability to penetrate into different phases to reduce the surface tension. This features caused to oil recovery, lubrication and facilities of crude oil in pipeline. In current research Biosurfactant-producing strain was isolated from the storage tanks of the Isfahan Oil Refining Company in Iran, and screened by oil expansion test, droplet collapse, and surface tension reduction measurement. Hydrocarbon recovery from crude oil sludge was measured under constant conditions. The effect of factoring biosource lubrication on crude oil in pipelines was investigated in vitro. Also, the optimization of biosurfactant production in different conditions was measured as a single factor and using Response Surface Method (RSM). The best biosurfactant-producing bacterium was identified as Kocuria rosea ABR6, and its sequence was registered in the gene bank with access number of MK100469. Chemical analysis proved that the produced biosurfactant was a lipopeptide. 7% of crude oil was recovered from petroleum sludge by biosurfactant obtained from Kocuria rosea ABR6. Also, the speed of crude oil transfer in pipelines was upgraded as it could be said that for a certain distance the transfer time reduced from 64 to 35 s. The highest biosurfactant production was measured at pH 9, aeration rate of 120 rpm and 96 h after incubation. The use of biosurfactants produced by Kocuria rosea ABR6 is recommended to remove oil sludge and lubricate oil in pipelines recommended in the oil industry.
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Kalajahi ST, Rasekh B, Yazdian F, Neshati J, Taghavi L. Green mitigation of microbial corrosion by copper nanoparticles doped carbon quantum dots nanohybrid. Environ Sci Pollut Res Int 2020; 27:40537-40551. [PMID: 32666463 DOI: 10.1007/s11356-020-10043-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Recently, nanomaterials have been introduced as a new generation of inhibitors to control the microbiologically influenced corrosion (MIC). In this study, copper nanoparticles doped carbon quantum dots (Cu/CQDs) nanohybrid was used as an inhibitor to reduce the MIC. FESEM, EDS, FTIR, and XRD were used to characterize the nanohybrid. The dose-response test was performed to evaluate the inhibitory effect of Cu/CQDs against SRB. Design-Expert software was used to design the matrix of experiment and analyze the result. Cu/CQDs showed significant inhibitory effect against SRB compared to the copper nanoparticles (CuNPs) and carbon quantum dots (CQDs), at 50 ppm. Moreover, corrosion behavior of X60 steel was evaluated via electrochemical impedance spectroscopy (EIS) and Tafel polarization techniques in the presence of SRB and Cu/CQDs. The fitted result of EIS showed that the charge transfer resistance (Rct) value increased in the presence of Cu/CQDs owing to the enhancement in the thickness of the electrical double layer, indicating that Cu/CQDs is able to provide significant corrosion protection to X60 steel in the presence of SRB. In addition, FESEM, EDS, and XRD were used to study the formed corrosion products and biofilm on the surface of X60 steel. Corrosion test results indicated that the addition of the Cu/CQDs reduced the surface damage of X60 steel in the presence of SRB. It is attributed to the carbon dots adsorption film formation, which possessed a significant protective ability to inhibit the corrosion of steel in the presence of SRB.
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Affiliation(s)
- Sara Taghavi Kalajahi
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Behnam Rasekh
- Environment and Biotechnology Division, Research Institute of Petroleum Industry (RIPI), West Blvd. of Azadi Sport Complex, P.O. Box 14665-137, Tehran, Iran.
| | - Fateme Yazdian
- Department of Life Science Engineering, Faculty of New Science and Technologies, University of Tehran, Tehran, Iran.
| | - Jaber Neshati
- Energy and Environment Research Center, Research Institute of Petroleum Industry (RIPI), P.O. Box 14665-137, West Blvd. of Azadi Sport Complex, Tehran, Iran
| | - Lobat Taghavi
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
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7
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Ghasemipour P, Fattahi M, Rasekh B, Yazdian F. Developing the Ternary ZnO Doped MoS 2 Nanostructures Grafted on CNT and Reduced Graphene Oxide (RGO) for Photocatalytic Degradation of Aniline. Sci Rep 2020; 10:4414. [PMID: 32157131 PMCID: PMC7064525 DOI: 10.1038/s41598-020-61367-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 02/26/2020] [Indexed: 01/17/2023] Open
Abstract
Transition metal sulfide semiconductors have achieved significant attention in the field of photocatalysis and degradation of pollutants. MoS2 with a two dimensional (2D) layered structure, a narrow bandgap and the ability of getting excited while being exposed to visible light, has demonstrated great potential in visible-light-driven photocatalysts. However, it possesses fast-paced recombination of charges. In this study, the coupled MoS2 nanosheets were synthesized with ZnO nanorods to develop the heterojunctions photocatalyst in order to obtain superior photoactivity. The charge transfer in this composite is not adequate to achieve desirable activity. Therefore, heterojunction was modified by reduced graphene oxide (RGO) nanosheets and carbon nanotubes (CNTs) to develop the RGO/ZnO/MoS2 and CNTs/ZnO/MoS2 ternary nanocomposites. The structure, morphology, composition, optical and photocatalytic properties of the as-fabricated samples were characterized through X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM), Energy-Dispersive X-ray (EDX), elemental mapping, Photoluminescence (PL), Ultraviolet-Visible spectroscopy (UV-VIS), and Brunauer-Emmett-Teller (BET) techniques. The photo-catalytic performance of all samples was evaluated through photodegradation of aniline in aqueous solution. The combination of RGO or CNTs into the ZnO/MoS2 greatly promoted the catalytic activity. However, the resulting RGO/ZnO/MoS2 ternary nanocomposites showed appreciably increased catalytic performance, faster than that of CNTs/ZnO/MoS2. Charge carrier transfer studies, the BET surface area analysis, and the optical studies confirmed this superiority. The role of operational variables namely, solution pH, catalyst dosage amount, and initial concentration of aniline was then investigated for obtaining maximum degradation. Complete degradation was observed, in the case of pH = 4, catalyst dosage of 0.7 g/L and aniline concentration of 80 ppm, and light intensity of 100 W. According to the results of trapping experiments, hydroxyl radical was found to be the main active species in the photocatalytic reaction. Meanwhile, a plausible mechanism was proposed for describing the degradation of aniline upon ternary composite. Moreover, the catalyst showed excellent reusability and stability after five consecutive cycles due to the synergistic effect between its components. Total-Organic-Carbon concentration (TOC) results suggested that complete mineralization of aniline occurred after 210 min of irradiation. Finally, a real petrochemical wastewater sample was evaluated for testing the catalytic ability of the as-fabricated composites in real case studies and it was observed that the process successfully quenched 100% and 93% of Chemical Oxygen Demand (COD) and TOC in the wastewater, respectively.
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Affiliation(s)
- Parisa Ghasemipour
- Chemical Engineering Department, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
| | - Moslem Fattahi
- Chemical Engineering Department, Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran.
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, National Iranian Oil Company, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Science and Technologies, University of Tehran, Tehran, Iran
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Sabaghian S, Yazdian F, Rasekh B, Shekarriz M, Mansouri N. Investigating the effect of starch/Fe 3O 4 nanoparticles on biodesulfurization using molecular dynamic simulation. Environ Sci Pollut Res Int 2020; 27:1667-1676. [PMID: 31755060 DOI: 10.1007/s11356-019-06453-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
The application of dibenzothiophene (DBT) as a source of energy leads to air pollution. The key solution to overcome this drawback is desulfurization. Magnetic nanoparticles have shown an excellent performance in the desulfurization of dibenzothiophene. In this study, molecular dynamic (MD) simulation was considered for the first time to gain insight about the molecule interactions in the biodesulfurization (BDS) process of DBT using Rhodococcus erythropolis IGTS8, in the presence and absence of starch/magnetic nanoparticles. According to the MD simulation results, the density of the system in the presence of starch/Fe3O4 was ascending while in the absence of these nanoparticles, the density was descending. Starch/magnetic nanoparticles caused more rapid equilibrium state in the biodesulfurization process. The energy diagram showed that magnetic nanoparticles decrease the energy fluctuation and increase the difference of non-bounding energy and potential energy (8 times) compared to (BDS) without nanoparticle, which reflects higher bounded energy in the system using starch/magnetic nanoparticles. The height of RDF peak in the presence of starch/Fe3O4 was 4 times more than the RDF peak in the absence of nanoparticle. In addition, the nanoparticles decreased the fluctuations around optimal temperature in BDS up to 5% compared to other state.
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Affiliation(s)
- Soltan Sabaghian
- Department of Environmental Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Science and Technologies, University of Tehran, Tehran, Iran.
| | - Behnam Rasekh
- Research Institute of Petroleum Industry (RIPT), P.O. Box 1485733111, Tehran, Iran.
| | - Marziyeh Shekarriz
- Chemical, Polymeric and Petrochemical Technology Development Division, Faculty of Downstream Technology Development, Research Institute of Petroleum Industry, Tehran, Iran
| | - Nabiallah Mansouri
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Akbari E, Beheshti‐Maal K, Rasekh B, Emami‐Karvani Z, Omidi M. Isolation and Identification of Current Biosurfactant‐Producing
Microbacterium maritypicum
ABR5 as a Candidate for Oily Sludge Recovery. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Elham Akbari
- Department of Microbiology, Faculty of Biological Sciences, Falavarjan BranchIslamic Azad University Falavarjan, Isfahan Iran
| | - Keivan Beheshti‐Maal
- Department of Microbiology, Faculty of Biological Sciences, Falavarjan BranchIslamic Azad University Falavarjan, Isfahan Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research GroupResearch Institute of Petroleum Industry Tehran Iran
| | - Zarrindokht Emami‐Karvani
- Department of Microbiology, Faculty of Biological Sciences, Falavarjan BranchIslamic Azad University Falavarjan, Isfahan Iran
| | - Meisam Omidi
- Medical Nanotechnology and Tissue Engineering Research CenterShahid Beheshti University of Medical Sciences Tehran Iran
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Khoshkholgh Sima NA, Ebadi A, Reiahisamani N, Rasekh B. Bio-based remediation of petroleum-contaminated saline soils: Challenges, the current state-of-the-art and future prospects. J Environ Manage 2019; 250:109476. [PMID: 31476519 DOI: 10.1016/j.jenvman.2019.109476] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/17/2019] [Accepted: 08/25/2019] [Indexed: 06/10/2023]
Abstract
Exploiting synergism between plants and microbes offers a potential means of remediating soils contaminated with petroleum hydrocarbons (PHCs). Salinity alters the physicochemical characteristics of soils and suppresses the growth of both plants and soil microbes, so the bioremediation of saline soils requires the use of plants and in microbes which can tolerate salinity. This review focuses on the management of PHC-contaminated saline soils, surveying what is currently known with respect to the potential of halophytes (plants adapted to saline environments) acting in concert with synergistic microbes to degrade PHCs. The priority is to identify optimal combinations of halophyte(s) and the bacteria present as endophytes and/or associated with the rhizosphere, and to determine what are the factors which most strongly affect their viability.
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Affiliation(s)
- Nayer Azam Khoshkholgh Sima
- Agricultural Biotechnology Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Ali Ebadi
- Agricultural Biotechnology Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Narges Reiahisamani
- Agricultural Biotechnology Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, Tehran, Iran.
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11
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Tavakoli Z, Rasekh B, Yazdian F, Maghsoudi A, Soleimani M, Mohammadnejad J. One-step separation of the recombinant protein by using the amine-functionalized magnetic mesoporous silica nanoparticles; an efficient and facile approach. Int J Biol Macromol 2019; 135:600-608. [PMID: 31121232 DOI: 10.1016/j.ijbiomac.2019.05.114] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 05/16/2019] [Accepted: 05/19/2019] [Indexed: 12/14/2022]
Abstract
The separation process is the main stage of recombinant production. With the advancement of nanotechnology and the development of magnetic nanoparticles, these structures are increasingly used in different applications. In the present study, we produced the recombinant human growth hormone from Pichia pastoris and for protein separation provided the surfaces similar to chromatographic columns on the surface of magnetic nanoparticles. For this purpose, using a co-precipitation method, the core of Fe3O4 was prepared and coated by silica. To increase the protein availability, silica mesoporous formation and its amine functionalization were performed. The specific surface area and the pore size were determined 78.3189 m2/g and 7.44 nm. After the magnetic separation, the sample loading in SDS gel shows a reduction in protein band and the protein absorption at a wavelength of 280 nm. Finally, we evaluate the ability of amine functionalized nanoparticles for protein separation that demonstrate the adsorption capacity significantly increased compare with silica-coated nanoparticles. The amine functionalized nanoparticles provide the maximum adsorption capacity of 235.21 μg/mg and after the elution, protein concentration determined 476 mg/L. This work indicates the functionalized magnetic mesoporous silica nanoparticles can be used as the best candidate for the separation of different biological macromolecules.
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Affiliation(s)
- Zahra Tavakoli
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
| | | | - Mehdi Soleimani
- Department of Biotechnology, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Javad Mohammadnejad
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
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12
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Rezapour N, Rasekh B, Mofradnia SR, Yazdian F, Rashedi H, Tavakoli Z. Molecular dynamics studies of polysaccharide carrier based on starch in dental cavities. Int J Biol Macromol 2018; 121:616-624. [PMID: 30308285 DOI: 10.1016/j.ijbiomac.2018.10.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/22/2018] [Accepted: 10/07/2018] [Indexed: 12/28/2022]
Abstract
Health is an important element that influences the level of development in a community. Studies show that tooth decay has been prevalent recently. Starch incorporating curcumin can serve as an alternative approach in preventing the activity of Streptococcus mutans attributed to biofilm and plaque formation on teeth. In this research, the performance of starch nanoparticle as a carrier for curcumin, a natural anti-inflammatory and a strong antioxidant agent, in decreasing dental caries was simulated. In the first stage, the conformational rearrangements of molecules and their interactions with other molecular species in a range of environments were examined via computational techniques and molecular dynamics (MD) simulation. The charts of energy, temperature, density, cell size and the radial distribution function (RDF) derived from the simulation, confirmed that during 5 initial steps there was a stable binding between the curcumin and starch in the presence of bacteria. The energy released in the starch formed nanosphere is very high, and this indicates a full reaction in the system. However, the density-decreasing trend of nanosystem suggests that it can effectively inhibit the activity of microorganism.
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Affiliation(s)
- Nazli Rezapour
- Department of Chemical Engineering, Faculty of Engineering, Islamic Azad University North Tehran Branch, Tehran, Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, Tehran, Iran
| | - Soheil Rezazadeh Mofradnia
- Department of Chemical Engineering, Faculty of Engineering, Islamic Azad University North Tehran Branch, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
| | - Hamid Rashedi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran.
| | - Zahra Tavakoli
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
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13
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Khosravinia S, Mahdavi MA, Gheshlaghi R, Dehghani H, Rasekh B. Construction and Characterization of a New Recombinant Vector to Remove Sulfate Repression of dsz Promoter Transcription in Biodesulfurization of Dibenzothiophene. Front Microbiol 2018; 9:1578. [PMID: 30065711 PMCID: PMC6056628 DOI: 10.3389/fmicb.2018.01578] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/25/2018] [Indexed: 11/13/2022] Open
Abstract
Biodesulfurization (BDS) is an environmentally friendly desulfurizing process with the potential of replacing or adding to the current expensive technologies for sulfur removal from fossil fuels. The BDS, however, still suffers from low biocatalyst activity. One reason is repression of dsz promoter transcription in presence of inorganic sulfate that impedes translation of Dsz enzymes required for desulfurization pathway. One approach to solve this problem is replacing the native promoter with a new promoter that is no longer repressed. In this study, dsz genes from desulfurizing strain Rhodococcus sp. FUM94 was cloned in an alkane responsive promoter, pCom8, and expressed in Escherichia coli BL21 (DE3) as a host. The recombinant was not susceptible to inorganic sulfate in the culture medium. Desulfurizing activity of recombinant strain versus wild type indicated that in a sulfate containing medium, BDS yield of recombinant increased from 16.0% ± 0.9 to 34.0% ± 1.9% when dibenzothiophene (DBT) concentration (dissolved in ethanol) increased from 25 to 100 ppm. Also, 2-hydroxy biphenyl (2-HBP) production rate improved 8.5-fold (from 0.302 ± 0.020 to 2.57 ± 0.14 mmol 2-HBP (kg DCW)-1 h-1) at the same DBT concentration range. This is while no 2-HBP production was detected in FUM94 biphasic reaction. In a sulfate-free medium, wild type strain demonstrated desulfurization activity, but decreasing with the increase of DBT concentration dissolved in n-tetradecane. Whereas, the recombinant strain demonstrated increasing desulfurizing activity in a sulfate-containing high DBT concentration environment. Overall, the result of this molecular manipulation can be considered as a step forward toward commercialization of BDS technology.
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Affiliation(s)
- Somayeh Khosravinia
- Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mahmood A Mahdavi
- Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Reza Gheshlaghi
- Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Hesam Dehghani
- Stem Cells and Regenerative Medicine Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran.,Division of Biotechnology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, Tehran, Iran
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14
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Alamdar N, Rasekh B, Yazdian F. Effects of Fe/SDS and Au nanoparticles on P. aeruginosa bacterial growth and biosurfactant production. IET Nanobiotechnol 2018; 12:520-525. [PMID: 29768241 PMCID: PMC8675947 DOI: 10.1049/iet-nbt.2016.0260] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 11/30/2017] [Accepted: 12/15/2017] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to evaluate the effects of iron (Fe)/SDS and gold (Au) nanoparticles on growth and biosurfactant production of Pseudomonas aeruginosa PBCC5. The concentrations of the nanoparticles used were 1, 500 and 1000 mg/l. In this research, the surface tension of biosurfactant, dry weight of biosurfactant and biomass, emulsification indexes (E24) were measured and transmission electron microscopy analysis was used to monitor the nanoparticles. The test results showed that the effect of nanoparticles on the bacterial growth and biosurfactant production varied corresponding to the type and concentration of nanoparticles. Fe/SDS nanoparticles showed no bacterial toxicity when the concentration of nanoparticles was 1 mg/ml and increased the growth and biosurfactant production, 23.21 and 20.73%, respectively. While at higher concentrations (500, 1000 mg/l), the nanoparticles suppressed bacterial growth as well as biosurfactant production. Similarly, Au nanoparticles had no bacterial toxicity and also increased bacterial growth and biosurfactant production. The surface tensions of all samples decreased from 72 of distiled water to 32-35 mN/m.
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Affiliation(s)
- Neda Alamdar
- Department of Biotechnology, Faculty of Advanced Science & Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran (IAUPS)
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group, Research Institute of Petroleum Industry, Tehran, Iran.
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New sciences and Technologies, University of Tehran, Tehran, Iran
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15
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Mohammadnejad J, Yazdian F, Omidi M, Rostami AD, Rasekh B, Fathinia A. Graphene oxide/silver nanohybrid: Optimization, antibacterial activity and its impregnation on bacterial cellulose as a potential wound dressing based on GO-Ag nanocomposite-coated BC. Eng Life Sci 2018; 18:298-307. [PMID: 32624909 DOI: 10.1002/elsc.201700138] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/29/2017] [Accepted: 01/31/2018] [Indexed: 01/09/2023] Open
Abstract
Recently, bacterial cellulose (BC) based wound dressing have raised significant interests in medical fields. However, to our best knowledge, it is apparent that the BC itself has no antibacterial activity. In this study, we optimized graphene oxide-silver (GO-Ag) nanohybrid synthesis using Response Surface Methodology and impregnate it to BC and carefully investigate their antibacterial activities against both the Gram-negative bacteria Escherichia coli and the Gram-positive bacteria Staphylococcus aureus. We discover that, compared to silver nanoparticles, GO-Ag nanohybrid with an optimal GO suspension's pH and [ G O ] [ A g N O 3 ] ratio is much more effective and shows synergistically enhanced, strong antibacterial activities at rather low dose. The GO-Ag nanohybrid is more toxic to E. coli than that to S. aureus. The antibacterial and mechanical properties of BC/GO-Ag composite are further investigated.
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Affiliation(s)
- Javad Mohammadnejad
- Department of Life Science Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Meisam Omidi
- Department of Tissue Engineering and Regenerative Medicine School of Advanced Technologies in Medicine Shahid Beheshti University of Medical sciences Tehran Iran
| | - Arash Darzian Rostami
- Department of Life Science Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group Research Institute of Petroleum Industry Tehran Iran
| | - Atena Fathinia
- Department of Life Science Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Iran
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16
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Rajab Beigy M, Rasekh B, Yazdian F, Aminzadeh B, Shekarriz M. High nitrate removal by starch-stabilized Fe 0 nanoparticles in aqueous solution in a controlled system. Eng Life Sci 2017; 18:187-195. [PMID: 32624897 DOI: 10.1002/elsc.201700127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 10/22/2017] [Accepted: 11/20/2017] [Indexed: 11/07/2022] Open
Abstract
This study was conducted to investigate biodenitrification efficiency with starch-stabilized nano zero valent iron (S-nZVI) as the additional electron donor in the presence of S2O3 in aqueous solutions, under anaerobic conditions. The main challenge for nZVI application is their tendency to agglomeration, thereby resulting in loss of reactivity that necessitates the use of stabilizers to improve their stability. In this study, S-nZVI was synthesized by chemical reduction method with starch as a stabilizer. The synthesized nanoparticles were characterized by TEM, XRD, and FTIR. Transmission electron microscopy (TEM) image shows S-nZVI has a size in the range of 5-27.5 nanometer. Temperature and S-nZVI concentration were the important factors affecting nitrate removal. Biodenitrification increased at 35°C and 500 mg/L of S-nZVI, in these conditions, biodenitrification efficiency increased from 40.45 to 78.84%. Experimental results suggested that biodenitrification increased by decreasing initial nitrate concentration. In the bioreactor biodenitrification rate was 94.07% in the presence of S-nZVI. This study indicated that, Fe2+ could be used as the only electron donor or as the additional electron donor in the presence of S2O3 to increase denitrification efficiency.
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Affiliation(s)
- Mahdieh Rajab Beigy
- Department of Life Science Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group Research Institute of Petroleum Industry Tehran Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Behnoush Aminzadeh
- Department of Civil and Environmental Engineering Faculty of Environment University of Tehran Tehran Iran
| | - Marzieh Shekarriz
- Chemical, Polymeric and Petrochemical Technology Research Division Research Institute of Petroleum Industry Tehran Iran
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17
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Karimi E, Jeffryes C, Yazdian F, Akhavan Sepahi A, Hatamian A, Rasekh B, Rashedi H, Omidi M, Ebrahim-Habibi MB, Ashrafi SJ. DBT desulfurization by decorating Rhodococcus erythropolis IGTS8 using magnetic Fe 3O 4 nanoparticles in a bioreactor. Eng Life Sci 2016; 17:528-535. [PMID: 32624797 DOI: 10.1002/elsc.201600080] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 09/02/2016] [Accepted: 11/10/2016] [Indexed: 11/10/2022] Open
Abstract
Today, crude oil is an important source of energy and environmental contamination due to the continued use of petroleum products is a matter or urgent concern. In this work, two technological platforms, namely, the use of a robust desulfurizing bacteria and the use of nanotechnology to decorate the surface of the bacteria with nanoparticles (NP), were combined to enhance biodesulfurization (BDS). BDS is an ecologically friendly method for desulfurizing petroleum products while avoiding damage to the hydrocarbons due to the high temperatures normally associated with physical desulfurization methods. First, a bacterium known to be a good organism for desulfurization (Rhodococcus erythropolis IGTS8) was employed in cell culture to remove a recalcitrant sulfur molecule from a common sulfur-containing compound found in crude petroleum products (dibenzothiophene). 2-Hydroxybiphenyl (2-HBP) produced as a consequence of the BDS of dibenzothiophene was determined using Gibbs' assay. The synthesized NP were characterized by field emission scanning electron microscope, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy, and vibrating sample magnetometer. The field emission scanning electron microscope and transmission electron microscopy images showed the size of the NP is 7-8 nm. The decorated cells had a long lag phase, but the growth continued until 148 h (at OD600 = 3.408) while the noncoated bacteria grow until 96 h before entering the stationary phase at OD600 = 2.547. Gibbs' assay results showed that production of 2-HBP by decorated cells was 0.210 mM at t = 148 h, while 2-HBP production by nondecorated cells was 0.182 mM at t = 96 h. Finally, the experiments were repeated in a fermenter.
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Affiliation(s)
- Elham Karimi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Clayton Jeffryes
- Dan F. Smith Department of Chemical Engineering Lamar University Beaumont TX USA
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Abbas Akhavan Sepahi
- Microbiology and Biotechnology Research Group Islamic Azad University Tehran Iran
| | - Ash Hatamian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies University of Tehran Tehran Iran
| | - Behnam Rasekh
- Microbiology and Biotechnology Research Group Research Institute of Petroleum Industry Tehran Iran
| | - Hamid Rashedi
- School of Chemical Engineering, College of Engineering University of Tehran Tehran Iran
| | - Meisam Omidi
- Protein Research Centre Shahid Beheshti University, GC Velenjak Tehran Iran
| | | | - Seyed Jamal Ashrafi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies University of Tehran Tehran Iran
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18
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Rasekh B, Khajeh K, Ranjbar B, Mollania N, Almasinia B, Tirandaz H. Protein engineering of laccase to enhance its activity and stability in the presence of organic solvents. Eng Life Sci 2014. [DOI: 10.1002/elsc.201300042] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Behnam Rasekh
- Department of Biochemistry; Faculty of Biological Sciences; Tarbiat Modares University; Tehran Iran
| | - Khosro Khajeh
- Department of Biochemistry; Faculty of Biological Sciences; Tarbiat Modares University; Tehran Iran
| | - Bijan Ranjbar
- Department of Biochemistry; Faculty of Biological Sciences; Tarbiat Modares University; Tehran Iran
| | - Nasrin Mollania
- Department of Biology; Faculty of Science; Hakim Sabzevari University; Sabzevar Iran
| | - Banafsheh Almasinia
- Research and Technology Directorate; National Iranian Oil Company; Tehran Iran
| | - Hassan Tirandaz
- Microbiology and Biotechnology Research Group; Research Institute of Petroleum Industry; Tehran Iran
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19
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Bardania H, Raheb J, Mohammad-Beigi H, Rasekh B, Arpanaei A. Desulfurization activity and reusability of magnetite nanoparticle-coatedRhodococcus erythropolisFMF andR. erythropolisIGTS8 bacterial cells. Biotechnol Appl Biochem 2013; 60:323-9. [DOI: 10.1002/bab.1090] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 12/28/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Hassan Bardania
- Department of Industrial and Environmental Biotechnology; National Institute of Genetic Engineering and Biotechnology; Tehran; Iran
| | - Jamshid Raheb
- Department of Industrial and Environmental Biotechnology; National Institute of Genetic Engineering and Biotechnology; Tehran; Iran
| | - Hossein Mohammad-Beigi
- Department of Industrial and Environmental Biotechnology; National Institute of Genetic Engineering and Biotechnology; Tehran; Iran
| | - Behnam Rasekh
- Department of Petroleum Biotechnology; Biotechnology Research Center; Research Institute of Petroleum Industry; Tehran; Iran
| | - Ayyoob Arpanaei
- Department of Industrial and Environmental Biotechnology; National Institute of Genetic Engineering and Biotechnology; Tehran; Iran
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20
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Aminsefat A, Rasekh B, Ardakani MR. Biodesulfurization of dibenzothiophene by Gordonia sp. AHV-01 and optimization by using of response surface design procedure. Microbiology (Reading) 2012. [DOI: 10.1134/s0026261712020026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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21
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Aminsefat A, Rasekh B, Ardakani MR. Biodesulfurization of dibenzothiophene by Gordonia sp. AHV-01 and optimization by using of response surface design procedure. Mikrobiologiia 2012; 81:171-176. [PMID: 22693825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A novel desulfurizing bacterium has been isolated from oil-contaminated soils in Khuzestan. The ability for dibenzothiophene desulfurization and its biochemical pathway were investigated. The bacterium was identified as Gordonia sp. AHV-01 (Genbank Accession No HQ607780) by 16S rRNA gene sequencing. HPLC results and Gibb's assay were shown that dibenzothiophene desulfurized via 4S-pathway Maximum growth (0.426 g dry cells/L) and produced 2-hydroxybiphenyl (63.1 microM) were observed at 120 h of cultivation. By using of response surface design procedure the optimization of pH, temperature and rotary shaker round on the desulfurization reaction of isolate AHV-01 were performed. The optimum conditions were determined at pH of 7.0, temperature of 30 degrees C and rotary shaker round of 180 rpm. At these conditions, the dibenzothiophene desulfurization activity was increased and maximum 2-hydroxybiphenyl production was detected 70.29 microM at 96 h. According to these results, Isolate AHV-01 was capable to desulfurize dibenzothiophene via 4S-pathway and likely it can be useful to reduce organic sulfur contents of crude oil.
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Affiliation(s)
- Ayeh Aminsefat
- Department of Microbiology, Islamic Azad University, Masjedsoleyman Branch, Iran.
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22
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Irani ZA, Mehrnia MR, Yazdian F, Soheily M, Mohebali G, Rasekh B. Analysis of petroleum biodesulfurization in an airlift bioreactor using response surface methodology. Bioresour Technol 2011; 102:10585-10591. [PMID: 21945162 DOI: 10.1016/j.biortech.2011.08.120] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2011] [Revised: 08/26/2011] [Accepted: 08/29/2011] [Indexed: 05/31/2023]
Abstract
For the first time, growing cells of Gordonia alkanivorans RIPI90A were used for biodesulfurization (BDS) of diesel. This process was carried out in an internal airlift bioreactor. BDS parameters (oil/water phase ratio and initial sulfur concentration) were optimized in flasks using response surface methodology. Predicted results were found to be in good agreement with experimental results. Initial sulfur concentration had a remarkable effect on BDS process. Maximum removal of sulfur (21 mg/l) can be achieved at oil/water phase ratio of 25% (v/v) and initial sulfur concentration of 28 mg/l. Moreover, effect of superficial gas velocity (Ug) and working volume (v) on volumetric gas liquid mass transfer coefficient was studied in an airlift bioreactor for BDS of diesel. The best results were achieved at Ug and v of 2.5l/min and 6.6l, respectively. Subsequently, BDS of diesel was investigated in an airlift bioreactor under optimized conditions. Sulfur reduction after 30 h was 14 mg/l.
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Affiliation(s)
- Zahra Azimzadeh Irani
- School of Chemical Engineering, Department of Life Science Engineering, University College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran
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23
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Esmaeilzadeh P, Fakhroueian Z, Jahanshahi M, Chamani M, Zamanizadeh HR, Rasekh B. A Synthetic Garden of State of the Art Natural Protein Nanoarchitectures Dispersed in Nanofluids. J Biomed Nanotechnol 2011; 7:433-40. [DOI: 10.1166/jbn.2011.1304] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Raheb J, Hajipour MJ, Saadati M, Rasekh B, Memari B. The enhancement of biodesulfurization activity in a novel indigenous engineered Pseudomonas putida. Iran Biomed J 2009; 13:207-213. [PMID: 19946346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND The combustion of sulfur-rich fossil fuels leads to release of sulfur oxide pollution in the environment. In biodesulfurization process, an organism is able to remove sulfur from fossil fuels without decreasing the caloric value of those substrates. The main aim of this research was to design a recombinant microorganism to remove the highest amount of sulfur compounds in fossil fuels. METHODS Three genes (dszA,B,C) from dsz operon are responsible for the 4S pathway (biodesulfurization pathway) in Rhodococcus erythropolis IGTS8 were inserted into the chromosome of a novel indigenous Pseudomonas putida. The reaction catalyzed by products of dszA,B,C genes require FMNH2 supplied by dszD enzyme. Thus, pVLT31 vector harboring dszD gene was transferred into this recombinant strain. RESULTS The results demonstrated a higher biodesulfurization activity when the flavin reductase gene was transferred into recombinant P. putida harboring dszA,B,C. These results were approved by the Gibbs test and HPLC analysis. CONCLUSION These analyses showed that this novel indigenous engineered P. putida could be a promising candidate for an industrial and environmental application for Biodesulfurization process.
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Affiliation(s)
- Jamshid Raheb
- National Institute of Genetic Engineering and Biotechnology (NIGEB), P.O.Box.14155-6343, Tehran, Iran.
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25
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Mohebali G, Ball AS, Kaytash A, Rasekh B. Dimethyl sulfoxide (DMSO) as the sulfur source for the production of desulfurizing resting cells of Gordonia alkanivorans RIPI90A. Microbiology (Reading) 2008; 154:878-885. [PMID: 18310033 DOI: 10.1099/mic.0.2007/013011-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The sulfate repression of desulfurization (Dsz) phenotype represents a major barrier to the mass production of desulfurizing resting cells. This repression can be avoided by replacing sulfate with dibenzothiophene (DBT) as the main substrate for the 4S pathway. However, mass production of biocatalyst using DBT is impractical because of its high price, low water solubility, and growth inhibition by 2-hydroxybiphenyl (2-HBP), which is the end product of the 4S pathway. In this work, the results showed that readily bioavailable sulfur compounds led to repression of the desulfurization activity of Gordonia alkanivorans RIPI90A. However, the Dsz phenotype was expressed through the 4S pathway in the presence of DMSO as the sulfur source for growth. Resting cells grown on DMSO were more active than the resting cells grown on DBT. The growth rate of strain RIPI90A on DMSO was higher than when DBT was used as the sole sulfur source. DMSO concentration significantly influenced the growth pattern of the strain, and the highest growth rate was observed at a concentration of 200 microg ml(-1). Above this concentration, the growth rate gradually decreased. DBT was found to induce the Dsz phenotype, with no observed lag period, in cells grown on DMSO as the sole sulfur source. Prior to induction, the specific activity was detected as 1.4 micromol 2-HBP (g dry cell weight)(-1) h(-1), and following incubation (5 h) the highest specific activity was observed as 5.11 micromol 2-HBP (g dry cell weight)(-1 )h(-1). This study identified that resting cells can be prepared in a two-step process. First, resting cells can be produced using DMSO as the sulfur source for growth; in the second step, improvements to their desulfurizing activity can be made using DBT as an inducer. DMSO is recommended as an appropriate sulfur source for the mass production of G. alkanivorans RIPI90A.
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Affiliation(s)
- Ghasemali Mohebali
- Department of Petroleum Biotechnology, Biotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
| | - Andrew S Ball
- School of Biological Sciences, Flinders University of South Australia, Adelaide SA 5001, Australia
| | - Ashk Kaytash
- Department of Petroleum Biotechnology, Biotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
| | - Behnam Rasekh
- Department of Petroleum Biotechnology, Biotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
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26
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Mohebali G, Ball A, Kaytash A, Rasekh B. Stabilization of water/gas oil emulsions by desulfurizing cells of Gordonia alkanivorans RIPI90A. Microbiology (Reading) 2007; 153:1573-1581. [PMID: 17464072 DOI: 10.1099/mic.0.2006/002543-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
It has been previously reported that resting-cells, non-proliferating cells, of Gordonia alkanivorans RIPI90A can convert dibenzothiophene (DBT) to 2-hydroxybiphenyl (2-HBP) via the 4S pathway in a biphasic system. The main goal of the current work was to study the behaviour of resting-cells of this strain in biphasic organic media. Resting-cells showed strong affinity for sulfurous organic substrates and were able to stabilize water/gas oil emulsions by attaching to the interface without decreasing the surface tension of their environment. This was consistent with the behaviour of the whole cells but not the surfactants, suggesting that microbial cell-mediated emulsification occurs. It was found that the emulsion-stabilizing activity of the resting-cells was influenced by the growth stage, but was not directly influenced by the metabolic activity of the resting-cells. This activity may be related to cell-surface hydrophobicity, which results from the unique chemical structure of the cell surface. In some biphasic biodesulfurization (BDS) bioreactors, emulsions are created without addition of any surfactant. Cell surface-mediated stabilization helps prolong the emulsions and therefore overcomes mass-transfer limitations in bioreactors. The simultaneous occurrence of emulsion-stabilizing and desulfurization activities of resting-cells was observed for what is believed to be the first time. The results suggest that this strain may have potential for the BDS of diesel oils.
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Affiliation(s)
- Ghasemali Mohebali
- Department of Petroleum Biotechnology, Biotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
| | - Andrew Ball
- School of Biological Sciences, Flinders University of South Australia, Adelaide SA 5001, Australia
| | - Ashk Kaytash
- Department of Petroleum Biotechnology, Biotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
| | - Behnam Rasekh
- Department of Petroleum Biotechnology, Biotechnology Research Center, Research Institute of Petroleum Industry, Tehran, Iran
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Mohebali G, Ball A, Rasekh B, Kaytash A. Biodesulfurization potential of a newly isolated bacterium, Gordonia alkanivorans RIPI90A. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.05.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rashtchi M, Mohebali G, Akbarnejad M, Towfighi J, Rasekh B, Keytash A. Analysis of biodesulfurization of model oil system by the bacterium, strain RIPI-22. Biochem Eng J 2006. [DOI: 10.1016/j.bej.2005.08.034] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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