1
|
Arenas S, Rivera N, Méndez Casallas FJ, Galvis B. Assessing Diesel Tolerance of Chromobacterium violaceum: Insights from Growth Kinetics, Substrate Utilization, and Implications for Microbial Adaptation. ACS OMEGA 2024; 9:23741-23752. [PMID: 38854507 PMCID: PMC11154896 DOI: 10.1021/acsomega.4c01698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/30/2024] [Accepted: 05/09/2024] [Indexed: 06/11/2024]
Abstract
This study aimed to determine the tolerance of Chromobacterium violaceum ATCC 12472 to diesel. The growth of the strain was evaluated through exposure to various diesel concentrations (1, 2.5, 5, 7.5, and 10% v/v), with continuous monitoring of growth via optical density measurements until the death phase was reached. Employing a logistic model, we analyzed the growth kinetics of C. violaceum and compared them with five other models to comprehend substrate utilization dynamics. Our results indicate that optimal bacterial growth occurred at 2.5% (v/v) or 18,125 mg/L diesel, while both higher and lower concentrations manifested inhibitory and increasingly stressful effects. The Aiba model emerged as the most fitting representation of substrate utilization by C. violaceum. In addition, our findings underscore the remarkable diesel tolerance of C. violaceum ATCC 12472, despite the inherently stressful nature of the medium. This study contributes to the understanding of microbial responses to environmental stressors and highlights the pivotal role of the substrate concentration in influencing microbial growth. These insights have implications for bioremediation strategies and enhance our understanding of bacterial ecological resilience in the presence of hydrocarbon pollutants.
Collapse
Affiliation(s)
- Sebastián Arenas
- Programa
de Ingeniería ambiental y Sanitaria, Universidad de La Salle, Bogotá 110231, Colombia
| | - Nathaly Rivera
- Programa
de Ingeniería ambiental y Sanitaria, Universidad de La Salle, Bogotá 110231, Colombia
| | | | - Boris Galvis
- Escuela
de Ingeniería de los Recursos Naturales y del Ambiente—EIDENAR, Universidad del Valle, Cali 760042, Colombia
| |
Collapse
|
2
|
Ahmed EM, F Alsanie W, Alhomrani M. Cyanide removal from aqueous environment by resting cells and PTFE immobilized cells of Sphingobacterium spp. J Basic Microbiol 2021; 62:444-454. [PMID: 34870865 DOI: 10.1002/jobm.202100292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 11/02/2021] [Accepted: 11/13/2021] [Indexed: 11/11/2022]
Abstract
Microbial detoxification of cyanide offered an inexpensive, safe, and viable alternative to physiochemical processes for the treatment of cyanide in industrial effluents or contaminated sites. This study involved isolation of novel strain with high resistance against cyanide toxicity and able to degrade the cyanide radical. The strain was isolated from rocky area and identified as Sphingobacterium multivorium using 16S ribosomal RNA. Resting pregrown cells were used in simple reaction mixture to avoid the complication associated with the media. One-gram fresh weight of this bacteria was able to remove 98.5% from 1.5 g/L cyanide which is a unique result. Factor affecting the biochemical process such as pH, temperature, agitation, glucose concentration was examined. The optimum conditions were, pH 6-7, 30-40°C, and 100-150 rpm shaking speed and 0.25% glucose. Furthermore, the cells were used after immobilization in polytetrafluoroethylene (PTFE) polymer. The PTFE is very safe carrier and the cells withstand the entrapment process and were able to remove 92% (1 g/L cyanide). The immobilized cells were used for six successive cycles with about 50% removal efficiency. The storage life extended to 14 days. No previous work studied the cyanide removal by Sphingobacterium spp. The strain showed good applicable characters.
Collapse
Affiliation(s)
- Essam M Ahmed
- Microbial Products Department, National Research Centre, Dokki, Egypt
| | - Walaa F Alsanie
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Majid Alhomrani
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| |
Collapse
|
3
|
Terada A, Komatsu D, Ogawa T, Flamandita D, Sahlan M, Nishimura M, Yohda M. Isolation of cyanide-degrading bacteria and molecular characterization of its cyanide-degrading nitrilase. Biotechnol Appl Biochem 2020; 69:183-189. [PMID: 33377552 DOI: 10.1002/bab.2095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/25/2020] [Indexed: 11/07/2022]
Abstract
Hydrogen cyanide is an industrially important chemical, and its annual production is more than 1.5 million tons. Because of its toxicity, the cyanide-containing effluents from industries have caused many environmental problems. Among various methods to treat the contaminated soils or water, the biological degradation is regarded to be promising. We isolated two cyanide-degrading microorganisms, Pedobacter sp. EBE-1 and Bacillus sp. EBE-2, from soil contaminated with cyanide. Among these bacteria, Bacillus sp. EBE-2 exhibited significantly a high cyanide-degrading ability. Bacillus sp. EBE-2 might be used for the remediation of cyanide contaminated water or soil. A nitrilase gene was cloned from Bacillus sp. EBE-2. Bacillus nitrilase was expressed in Escherichia coli and purified. Bacillus nitrilase exhibited cyanide-degrading activity as a large oligomer. Since formic acid formation from cyanide was observed, Bacillus nitrilase is likely to be a cyanide hydrolase. Although there exist various homologous enzymes annotated as carbon-nitrogen family hydrolases, this is the first report on the cyanide degrading activity. The structure and catalytic site of Bacillus nitrilase were studied by homology modeling and molecular docking simulation.
Collapse
Affiliation(s)
- Ayane Terada
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
| | - Daisuke Komatsu
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
- EnBio Engineering, Chiyoda, Tokyo, Japan
| | - Takahiro Ogawa
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
| | - Darin Flamandita
- Department of Chemical Engineering, Universitas Indonesia, Depok, Indonesia
| | - Muhamad Sahlan
- Department of Chemical Engineering, Universitas Indonesia, Depok, Indonesia
| | | | - Masafumi Yohda
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
| |
Collapse
|
4
|
Ibrahim S, Abdul Khalil K, Zahri KNM, Gomez-Fuentes C, Convey P, Zulkharnain A, Sabri S, Alias SA, González-Rocha G, Ahmad SA. Biosurfactant Production and Growth Kinetics Studies of the Waste Canola Oil-Degrading Bacterium Rhodococcus erythropolis AQ5-07 from Antarctica. Molecules 2020; 25:E3878. [PMID: 32858796 PMCID: PMC7503493 DOI: 10.3390/molecules25173878] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 11/26/2022] Open
Abstract
With the progressive increase in human activities in the Antarctic region, the possibility of domestic oil spillage also increases. Developing means for the removal of oils, such as canola oil, from the environment and waste "grey" water using biological approaches is therefore desirable, since the thermal process of oil degradation is expensive and ineffective. Thus, in this study an indigenous cold-adapted Antarctic soil bacterium, Rhodococcus erythropolis strain AQ5-07, was screened for biosurfactant production ability using the multiple approaches of blood haemolysis, surface tension, emulsification index, oil spreading, drop collapse and "MATH" assay for cellular hydrophobicity. The growth kinetics of the bacterium containing different canola oil concentration was studied. The strain showed β-haemolysis on blood agar with a high emulsification index and low surface tension value of 91.5% and 25.14 mN/m, respectively. Of the models tested, the Haldane model provided the best description of the growth kinetics, although several models were similar in performance. Parameters obtained from the modelling were the maximum specific growth rate (qmax), concentration of substrate at the half maximum specific growth rate, Ks% (v/v) and the inhibition constant Ki% (v/v), with values of 0.142 h-1, 7.743% (v/v) and 0.399% (v/v), respectively. These biological coefficients are useful in predicting growth conditions for batch studies, and also relevant to "in field" bioremediation strategies where the concentration of oil might need to be diluted to non-toxic levels prior to remediation. Biosurfactants can also have application in enhanced oil recovery (EOR) under different environmental conditions.
Collapse
Affiliation(s)
- Salihu Ibrahim
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia; (S.I.); (K.N.M.Z.)
| | - Khalilah Abdul Khalil
- School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor 40450, Malaysia;
| | - Khadijah Nabilah Mohd Zahri
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia; (S.I.); (K.N.M.Z.)
| | - Claudio Gomez-Fuentes
- Department of Chemical Engineering, Universidad de Magallanes, Avda. Bulnes 01855, Punta Arenas, Región de Magallanes y Antártica Chilena, Chile;
| | - Peter Convey
- British Antarctic Survey, NERC, High Cross, Madingley Road, Cambridge CB3 0ET, UK;
| | - Azham Zulkharnain
- Department of Bioscience and Engineering, College of system Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan;
| | - Suriana Sabri
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia;
| | - Siti Aisyah Alias
- National Antarctic Research Centre, B303 Level 3, Block B, IPS Building, Universiti Malaya, Kuala Lumpur 50603, Malaysia;
- Institute of Ocean and Earth Sciences, Universiti Malaya, B303 Level 3, Block B, Lembah Pantai, Kuala Lumpur 50603, Malaysia
| | - Gerardo González-Rocha
- Laboratorio de Investigacion en Agentes Antibacterianos, Facultad de Ciencias Biologicas, Universidad de Concepcion, Concepcion 4070386, Chile;
| | - Siti Aqlima Ahmad
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia; (S.I.); (K.N.M.Z.)
- National Antarctic Research Centre, B303 Level 3, Block B, IPS Building, Universiti Malaya, Kuala Lumpur 50603, Malaysia;
| |
Collapse
|
5
|
Wu H, Feng YL, Li HR, Wang HJ, Wang JJ. Co-metabolism kinetics and electrogenesis change during cyanide degradation in a microbial fuel cell. RSC Adv 2018; 8:40407-40416. [PMID: 35558197 PMCID: PMC9091495 DOI: 10.1039/c8ra08775j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 11/28/2018] [Indexed: 11/21/2022] Open
Abstract
The co-metabolic degradation kinetics, microbial growth kinetics and electricity generation capacity were researched of strain MC-1 in a MFC (microbial fuel cell). The results show that Haldane and Aiba models suit the growth kinetics of a single substrate (sodium acetate) MFC with 0.995 correlation coefficient. Moreover, the Haldane model was appropriate to describe the growth kinetics of a single substrate (sodium cyanide) MFC with 0.986 correlation coefficient. The growth kinetics of a mixed substrate MFC can be explained well by the SKIP model with correlation coefficient 0.995. Second order and three-half order models were found to suitably describe the cyanide degradation process. The maximum output voltage of MFC and the cyanide degradation efficiency were significantly enhanced by using sodium acetate and cyanide as mixed substrates. Also, the trend of electricity production is related to the growth cycle of microorganisms in a MFC. The co-metabolic degradation kinetics, microbial growth kinetics and electricity generation capacity were researched for strain MC-1 in a MFC.![]()
Collapse
Affiliation(s)
- Hao Wu
- School of Civil and Resource Engineering
- University of Science and Technology Beijing
- Beijing
- China
- State Key Laboratory of Biochemical Engineering
| | - Ya-li Feng
- School of Civil and Resource Engineering
- University of Science and Technology Beijing
- Beijing
- China
| | - Hao-ran Li
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering Chinese Academy of Sciences
- Beijing
- China
| | - Hong-jun Wang
- School of Civil and Resource Engineering
- University of Science and Technology Beijing
- Beijing
- China
| | - Jun-jie Wang
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering Chinese Academy of Sciences
- Beijing
- China
| |
Collapse
|