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Krivdin LB. Liquid-phase NMR of asphaltenes. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2024. [PMID: 38807559 DOI: 10.1002/mrc.5454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/30/2024]
Abstract
The present review focuses on the most recent advances in liquid-phase NMR of asphaltenes, leaving apart an overwhelming amount of publications dealing with solid-state NMR investigations in this field. Owing to the complexity of the coal-derived products, and in particular, asphaltenes, their 1H and 13C NMR spectra consist of a number of overlapping signals belonging to different hydrocarbon types. Comprehensive studies of asphaltenes by means of NMR reveal the characteristic functional groups of their fractions together with the spectral regions in which they resonate. NMR studies of asphaltenes provide a straightforward guideline for their chemical composition and that of the related coal-derived products.
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Affiliation(s)
- Leonid B Krivdin
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
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2
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Abbas AM, Elkhatib WF, Aboulwafa MM, Hassouna NA, Aboshanab KM. Characterization of vitamin D3 biotransformation by the cell lysate of Actinomyces hyovaginalis CCASU-A11-2. AMB Express 2024; 14:43. [PMID: 38658456 PMCID: PMC11043238 DOI: 10.1186/s13568-024-01694-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/04/2024] [Indexed: 04/26/2024] Open
Abstract
A former work conducted in our Lab, lead to in a effective scale up of vitamin D3 bioconversion into calcitriol by Actinomyces (A.) hyovaginalis isolate CCASU-A11-2 in Lab fermenter (14 L) resulting in 32.8 µg/100 mL of calcitriol. However, the time needed for such a bioconversion process was up to 5 days. Therefore, the objective of this study was to shorten the bioconversion time by using cell-free lysate and studying different factors influencing bioconversion. The crude cell lysate was prepared, freeze-dried, and primarily fractionated into nine fractions, of which, only three fractions, 50, 100, and 150 mM NaCl elution buffers showed 22, 12, and 2 µg/10 mL, calcitriol production, respectively. Ammonium sulfate was used for protein precipitation, and it did not affect the bioconversion process except at a concentration of 10%w/v. Secondary fractionation was carried out using 80 mL of the 50 mM NaCl elution buffer and the results showed the 80 mL eluent volume was enough for the complete elution of the active protein. The pH 7.8, temperature 28 °C, and 6 h reaction time were optimum for maximum calcitriol production (31 µg/10 mL). In conclusion, the transformation of vitamin D3 into calcitriol was successfully carried out within 6 h and at pH 7.8 and 28 °C using fractionated cell lysate. This process resulted in a 10-fold increase in calcitriol as compared to that produced in our previous study using a 14 L fermenter (32.8 µg/100 mL). Therefore, cell-free lysate should be considered for industrial and scaling up vitamin D3 bioconversion into calcitriol.
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Affiliation(s)
- Ahmad M Abbas
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, African Union Organization St. Abbassia, Abbassia, Cairo, 11566, Egypt
- Department of Microbiology & Immunology, Faculty of Pharmacy, King Salman International University (KSIU), Ras Sudr, South Sinai, Egypt
| | - Walid F Elkhatib
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, African Union Organization St. Abbassia, Abbassia, Cairo, 11566, Egypt
- Department of Microbiology & Immunology, Faculty of Pharmacy, Galala University, New Galala City, Suez, Egypt
| | - Mohammad M Aboulwafa
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, African Union Organization St. Abbassia, Abbassia, Cairo, 11566, Egypt
- Department of Microbiology & Immunology, Faculty of Pharmacy, King Salman International University (KSIU), Ras Sudr, South Sinai, Egypt
| | - Nadia A Hassouna
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, African Union Organization St. Abbassia, Abbassia, Cairo, 11566, Egypt
| | - Khaled M Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, African Union Organization St. Abbassia, Abbassia, Cairo, 11566, Egypt.
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Das S, Das N, Choure K, Pandey P. Biodegradation of asphaltene by lipopeptide-biosurfactant producing hydrocarbonoclastic, crude oil degrading Bacillus spp. BIORESOURCE TECHNOLOGY 2023; 382:129198. [PMID: 37201870 DOI: 10.1016/j.biortech.2023.129198] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 05/20/2023]
Abstract
Asphaltene is the most recalcitrant compound in crude oil. Bacteria were isolated from crude oil contaminated soil and their efficiency for hydrocarbon degradation was determined using GC-MS and isolates were screened for biosurfactant production using FT-IR. Two Bacillus spp. having hydrocarbonoclastic and lipo-peptide biosurfactant-producing abilities were experimented for their asphaltene removal potential through oil removal efficiency (ORE%) and asphaltene degradation efficiency (ADE%). B. thuringeinsis SSL1 and B. cereus SSL3 could degrade 76.4% and 67.4% of asphaltene (20gL-1), in vitro, respectively, which is much higher than previous reports. B. thuringiensis SSL1 is recommended for effective breakdown of asphaltene, total petroleum hydrocarbon, and polyaromatic hydrocarbon degradation, aided by its biosurfactants, which is useful for crude oil cleanup. Biosurfactants are important for enhancing the availability of hydrophobic hydrocarbons to bacteria, which is beneficial for efficient crude oil remediation. These findings could lead to more effective strategies for complete clean-up of crude oil pollution.
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Affiliation(s)
- Sandeep Das
- Soil and Environment Microbiology Laboratory, Department of Microbiology, Assam University, Silchar 788011, Assam, India
| | - Nandita Das
- Soil and Environment Microbiology Laboratory, Department of Microbiology, Assam University, Silchar 788011, Assam, India
| | - Kamlesh Choure
- Department of Biotechnology, AKS University, Satna 485001, Madhya Pradesh, India
| | - Piyush Pandey
- Soil and Environment Microbiology Laboratory, Department of Microbiology, Assam University, Silchar 788011, Assam, India.
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Wei F, Xu R, Rao Q, Zhang S, Ma Z, Ma Y. Biodegradation of asphaltenes by an indigenous bioemulsifier-producing Pseudomonas stutzeri YWX-1 from shale oil in the Ordos Basin: Biochemical characterization and complete genome analysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 251:114551. [PMID: 36669280 DOI: 10.1016/j.ecoenv.2023.114551] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Crude oil pollution is environmentally ubiquitous and has become a global public concern about its impact on human health. Asphaltenes are the key components of heavy crude oil (HCO) that are underutilized due to their high viscosity and density, and yet, the associated information about biodegradation is extremely limited in the literature. In the present study, an indigenous bacterium with effective asphaltene-degrading activity was isolated from oil shale and identified as Pseudomonas stutzeri by a polyphasic taxonomic approach, named YWX-1. Supplemented with 75 g L-1 heavy crude oil as the sole carbon source for growth in basic mineral salts liquid medium (MSM), strain YWX-1 was able to remove 49% of asphaletene fractions within 14 days, when it was cultivated with an initial inoculation size of 1%. During the degradation process, the bioemulsifier produced by strain YWX-1 could emulsify HCO obviously into particles, as well as it had the ability to solubilize asphaletenes. The bioemulsifier was identified to be a mixture of polysaccharide and protein through Fourier transform infrared spectroscopy (FT-IR). The genome of strain YWX-1 contains one circular chromosome of 4488441 bp with 63.98% GC content and 4145 protein coding genes without any plasmid. Further genome annotation indicated that strain YWX-1 possesses a serial of genes involved in bio-emulsification and asphaltenes biodegradation. This work suggested that P. stutzeri YWX-1 could be a promising species for bioremediation of HCO and its genome analysis provided insight into the molecular basis of asphaltene biodegradation and bioemulsifier production.
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Affiliation(s)
- Fengdan Wei
- College of Life Science, Northwest University, Xi´an, China
| | - Rui Xu
- College of Life Science, Northwest University, Xi´an, China
| | - Qingyan Rao
- College of Life Science, Northwest University, Xi´an, China
| | - Shuqi Zhang
- College of Life Science, Northwest University, Xi´an, China
| | - Zhiwei Ma
- College of Life Science, Northwest University, Xi´an, China
| | - Yanling Ma
- Shaanxi Provincial Key Laboratory of Biotechnology, Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi´an, Shaanxi 710069, China; College of Life Science, Northwest University, 229 Tai bai North Rd, Xi´an, Shaanxi 710069, China.
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Chand P, Dutta S, Mukherji S. Slurry phase biodegradation of heavy oily sludge and evidence of asphaltene biotransformation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116315. [PMID: 36183530 DOI: 10.1016/j.jenvman.2022.116315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/02/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Oily sludge management is a global environmental concern due to its hazardous nature. Oily sludge obtained from a refinery in India had 19-21% oil content. The oil was highly enriched in the asphaltene fraction. Slurry phase biodegradation of this oily sludge in presence of a 3-membered bacterial consortium was optimized in presence of Triton X-100 to increase the bioavailability of hydrocarbons. Triton X-100 at 4 times the critical micelle concentration (CMC) showed the highest degradation where oil removal of 53.1% was achieved from a 10% sludge slurry over 90 days. GCxGC analysis of n-alkanes present in the oily sludge after the biodegradation study showed an increase in the lower n-alkanes, i.e., dodecane and tridecane over the first 30 days, whereas the higher n-alkanes were removed to a much higher extent. Heptadecane showed the maximum extent of degradation with 94.9% removal in 90 days and an initial degradation rate of 0.079 day-1. The, maximum rate of degradation was observed for pentacosane (0.083 day-1) with 93.7% removal in 90 days. The increase in the lower n-alkanes may be attributed to biotic transformation of the asphaltene fraction which was also confirmed through FTIR and pyrolysis GCxGC analysis. Biodegradation was found to cause changes in the pyrolysis product of asphaltenes where four and three-ring pyrolysis products decreased while the one and two-ring pyrolysis products increased. In presence of the consortium asphaltene removal over 90 days was 12% whereas only 0.4% removal was obtained in the abiotic controls.
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Affiliation(s)
- Priyankar Chand
- Environmental Science and Engineering Department, IIT Bombay, Powai, Mumbai, India
| | - Suryendu Dutta
- Department of Earth Sciences, IIT Bombay, Powai, Mumbai, India
| | - Suparna Mukherji
- Environmental Science and Engineering Department, IIT Bombay, Powai, Mumbai, India.
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Delegan Y, Petrikov K, Frantsuzova E, Rudenko N, Solomentsev V, Suzina N, Travkin V, Solyanikova IP. Complete Genome Analysis of Rhodococcus opacus S8 Capable of Degrading Alkanes and Producing Biosurfactant Reveals Its Genetic Adaptation for Crude Oil Decomposition. Microorganisms 2022; 10:microorganisms10061172. [PMID: 35744693 PMCID: PMC9229178 DOI: 10.3390/microorganisms10061172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/23/2022] [Accepted: 06/01/2022] [Indexed: 02/05/2023] Open
Abstract
Microorganisms capable of decomposing hydrophobic substrates in cold climates are of considerable interest both in terms of studying adaptive reactions to low temperatures and in terms of their application in biotechnologies for cleaning up oil spills in a crude-oil polluted soil. The aim of this work was to investigate the genome of Rhodococcus opacus S8 and explore behavior traits of this strain grown in the presence of hexadecane. The genome size of strain S8 is 8.78 Mb, of which the chromosome size is 7.75 Mb. The S8 strain contains 2 circular plasmids of 135 kb and 105 kb and a linear plasmid with a size of 788 kb. The analysis of the genome revealed the presence of genes responsible for the degradation of alkanes and synthesis of biosurfactants. The peculiarities of morphology of microbial cells when interacting with a hydrophobic substrate were revealed. An adaptive mechanism responsible in the absence of oxygen for maintaining the process of degradation of hexadecane is discussed. The data obtained show that the strain S8 has great potential to be used in biotechnologies.
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Affiliation(s)
- Yanina Delegan
- Laboratory of Physiology of Microorganisms, Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia; (Y.D.); (E.F.)
- State Research Center for Applied Microbiology and Biotechnology, 142279 Obolensk, Moscow Region, Russia;
| | - Kirill Petrikov
- Laboratory of Plasmid Biology, Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia;
| | - Ekaterina Frantsuzova
- Laboratory of Physiology of Microorganisms, Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia; (Y.D.); (E.F.)
- The Federal State Budget Educational Institution of Higher Education Pushchino State Institute of Natural Science, 142290 Pushchino, Moscow Region, Russia
| | - Natalia Rudenko
- Institute of Basic Biological Problems of Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia;
| | - Viktor Solomentsev
- State Research Center for Applied Microbiology and Biotechnology, 142279 Obolensk, Moscow Region, Russia;
| | - Nataliya Suzina
- Laboratory of Cytology of Microorganisms, Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia;
| | - Vasili Travkin
- Regional Microbiological Center, Belgorod National Research University, 308015 Belgorod, Belgorod Region, Russia;
| | - Inna P. Solyanikova
- The Federal State Budget Educational Institution of Higher Education Pushchino State Institute of Natural Science, 142290 Pushchino, Moscow Region, Russia
- Regional Microbiological Center, Belgorod National Research University, 308015 Belgorod, Belgorod Region, Russia;
- Laboratory of Microbial Enzymology, Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia
- Correspondence:
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Draft Genome Sequence of Bacillus sp. Strain IITD106, Isolated from Oil-Contaminated Soil. Microbiol Resour Announc 2021; 10:e0098221. [PMID: 34854725 PMCID: PMC8638583 DOI: 10.1128/mra.00982-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Here, we report the whole-genome sequence of Bacillus sp. strain IITD106. The bacterium has the unique ability to produce saponins. The complete nucleotide sequence will provide insights into the various genes and regulators involved in the biosynthesis of saponin.
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