1
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Lau SH, Su CL, Yu TY, Zhong Y, Xu X, Jane WN, Chang YT. The use of immobilised bacteria cross-linked within magnetic alginate beads enhances the treatment of benzophenone-type UV filter chemicals by the SBR system. CHEMOSPHERE 2023; 334:139038. [PMID: 37244550 DOI: 10.1016/j.chemosphere.2023.139038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 05/29/2023]
Abstract
Benzophenone-n compounds (BPs) are applied in a broad spectrum of commercial products, one of which is sunscreen. These chemicals are frequently detected in a variety of environmental matrices worldwide, especially water bodies. BPs are defined as emerging contaminants as well as endocrine-disrupting contaminants; thus, it has become necessary to develop aggressive and green treatments to remove BPs. In this study, we used immobilised BP-biodegrading bacteria linked to reusable magnetic alginate beads (MABs). The MABs were added to a sequencing batch reactor (SBR) system to enhance the removal of 2,4-dihydroxybenzophenone (BP-1) and oxybenzone (BP-3) from sewage. The BP-1 and BP-3 biodegrading bacteria in the MABs consisted of strains from up to three genera to allow for efficient biodegradation. The strains used were Pseudomonas spp., Gordonia sp., and Rhodococcus sp. The optimal composition of the MABs consisted of 3% (w/v) alginate and 10% (w/v) magnetite. The MABs resulted in 60.8%-81.7% recovery by weight after 28 days, and there was a continuous release of bacteria. Moreover, the biological treatment of the BPs sewage improved after adding 100 g of BP1-MABs (1:27) and also 100 g BP3-MABs (1:27) into the SBR system at a hydraulic retention time (HRT) of 8 h. Compared with the SBR system without MABs, the removal rates of BP-1 and BP-3 increased from 64.2% to 71.5% and from 78.1% to 84.1%, respectively. Furthermore, the COD removal increased from 36.1% to 42.1%, and total nitrogen increased from 30.5% to 33.2%. Total phosphorus remained constant at 29%. The bacterial community analysis showed that the Pseudomonas population was <2% before the MAB addition, but increased to 56.1% by day 14. In contrast, the Gordonia sp. And Rhodococcus sp. Populations (<2%) remained unchanged throughout the 14-day treatment period.
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Affiliation(s)
- Sai Hung Lau
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan
| | - Ching-Lun Su
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan
| | - Ting-Yu Yu
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan
| | - YuYing Zhong
- School of Ocean, Fuzhou University, Fuzhou, 362200, China
| | - XinYuan Xu
- School of Ocean, Fuzhou University, Fuzhou, 362200, China
| | - Wann-Neng Jane
- Institute of Plant and Microbial Biology, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Yi-Tang Chang
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan.
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2
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Phenol Degradation Performance in Batch and Continuous Reactors with Immobilized Cells of Pseudomonas putida. Processes (Basel) 2023. [DOI: 10.3390/pr11030739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
Abstract
Phenol is a highly persistent environmental pollutant and is toxic to living organisms. The main objective of this study is to observe the phenol degradation performance by free and immobilized Pseudomonas putida (P. putida) in batch and continuous reactors, respectively. Batch experiments were evaluated to determine the maximum specific growth rate, saturation constant, inhibition constant, and cell yield. These kinetic parameters were used as the input values for the continuous-flow immobilized cells model. The immobilized cells model was validated by experimental results obtained from an immobilized cells continuous reactor. The model-predicted and experimental results showed good agreement for phenol effluent concentration in the continuous mode. In the steady-state condition, high phenol removal was achieved under various hydraulic retention times. The corresponding removal of phenol ranged from 93.3 to 95.9%, while the hydraulic retention times were maintained at 3.1–10.5 h. Furthermore, polyvinyl alcohol-immobilized cells with nanoscale particles were also prepared. The polyvinyl alcohol-immobilized P. putida cells with nanoscale Fe3O4 enhanced the ability of phenol degradation. The experimental results revealed that immobilized cells with nano-Fe3O4 had the highest phenol degradation performance at a low salinity of 1%. However, the advantage of the addition of nano-Fe3O4 was insignificant for phenol degradation at a higher salinity of 5%. The approaches of the batch and continuous column tests were practical in the treatment of actual phenol-containing wastewater.
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3
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Niu L, Qin X, Wang L, Guo N, Cao H, Li H, Zhao C, Wang H, Fu Y. Upgrading the accumulation of ginsenoside Rd in Panax notoginseng by a novel glycosidase-producing endophytic fungus G11-7. Folia Microbiol (Praha) 2022; 68:441-452. [PMID: 36571675 DOI: 10.1007/s12223-022-01020-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 11/18/2022] [Indexed: 12/27/2022]
Abstract
A novel endophytic fungus producing beta-glucosidase was isolated and characterized from pigeon pea (Cajanus cajan [L.] Millsp.), which has excellent properties in converting ginsenoside Rb1 to ginsenoside Rd in Panax notoginseng. According to the 16S rDNA gene sequence, the G11-7 strain was identified as Fusarium proliferatum, and the accession number KY303906 was confirmed in GenBank. The G11-7 immobilized spores, in which the activity of beta-glucosidase could reach 0.95 U/mL, were co-cultured with P. notoginseng plant material to obtain a continuous beta-glucosidase supply for the biotransformation of ginsenoside Rb1 to Rd. Under the liquid-solid ratio (20:1), initial pH (6.0), and temperature (30 °C) constituents, the maximum ginsenoside Rd yield was obtained as 9.15 ± 0.65 mg/g, which was 3.67-fold higher than that without fungal spore co-culture (2.49 ± 0.98 mg/g). Furthermore, immobilized G11-7 spores showed significant beta-glucosidase producing ability which could be recovered and reused for 6 cycles. Overall, these results suggested that immobilized G11-7 offered a promising and effective approach to enhance the production of ginsenoside Rd for possible nutraceutical and pharmaceutical uses.
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Affiliation(s)
- Lili Niu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China.,Medicinal Plant Cultivation Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Haidian District, Beijing, 100193, China
| | - Xiangyu Qin
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China
| | - Litao Wang
- The College of Forestry, Beijing Forestry University, Beijing, 100083, People's Republic of China
| | - Na Guo
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China
| | - Hongyan Cao
- The College of Forestry, Beijing Forestry University, Beijing, 100083, People's Republic of China
| | - Hanghang Li
- The College of Forestry, Beijing Forestry University, Beijing, 100083, People's Republic of China
| | - Chunjian Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China
| | - Huimei Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China
| | - Yujie Fu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China. .,The College of Forestry, Beijing Forestry University, Beijing, 100083, People's Republic of China.
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Wang H, Qi X, Zhang L, Zhang X, Xu P, Wang X. Efficient bioelectricity generation and carbazole biodegradation using an electrochemically active bacterium Sphingobium yanoikuyae XLDN2-5. CHEMOSPHERE 2022; 307:135986. [PMID: 35970217 DOI: 10.1016/j.chemosphere.2022.135986] [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: 03/02/2022] [Revised: 07/04/2022] [Accepted: 08/06/2022] [Indexed: 06/15/2023]
Abstract
Carbazole and its derivatives are polycyclic aromatic heterocycles with unusual toxicity and mutagenicity. However, disposal of these polycyclic aromatic heterocycles remains a significant challenge. This study focused on efficient resource recovery from carbazole using an obligate aerobe, Sphingobium yanoikuyae XLDN2-5, in microbial fuel cells (MFCs). S. yanoikuyae XLDN2-5 successfully achieved carbazole degradation and simultaneously electricity generation in MFCs with a maximum power density of 496.8 mW m-2 and carbazole degradation rate of 100%. It is the first time that S. yanoikuyae XLDN2-5 was discovered as an electrochemically active bacterium with high extracellular electron transfer (EET) capability. Redox mediator analysis indicated that no self-produced redox mediators were found for S. yanoikuyae XLDN2-5 under analysis conditions, and the exogenous redox mediators used in this study did not promote its EET. The nanowires produced by S. yanoikuyae XLDN2-5 cells were found in the biofilm by morphology characterization and the growth process of the nanowires was consistent with the discharge process of the MFC. Conductivity determination further verified that the nanowires produced by S. yanoikuyae XLDN2-5 cells were electrically conductive. Based on these results, it is speculated that S. yanoikuyae XLDN2-5 may mainly utilize conductive nanowires produced by itself rather than redox mediators to meet the requirements of normal energy metabolism when it grows in the low dissolved oxygen zone of the anodic biofilm. These novel findings on the EET mechanism of S. yanoikuyae XLDN2-5 lay a foundation for further exploration of polycyclic aromatic heterocyclic pollutants treatment in electrochemical devices, which may create new biotechnology processes for these pollutants control.
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Affiliation(s)
- Huimin Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, PR China; Department of Microbiology, College of Life Science, Key Laboratory for Agriculture Microbiology, Shandong Agricultural University, Taian, 271018, PR China
| | - Xiaoyan Qi
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, PR China
| | - Lei Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, PR China
| | - Xueli Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, PR China
| | - Ping Xu
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Xia Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, PR China.
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5
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Lau SH, Lin IC, Su CL, Chang YT, Jane WN. Synthesis of cross-linked magnetic chitosan beads immobilised with bacteria for aerobic biodegrading benzophenone-type UV filter. CHEMOSPHERE 2022; 307:136010. [PMID: 35973493 DOI: 10.1016/j.chemosphere.2022.136010] [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: 04/20/2022] [Revised: 07/21/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
Bacterial immobilisation is a technique by which bacteria are embedded into or adsorbed onto a carrier material thereby increasing bacterial tolerance to harsh environments. This technique can be used to enhance bacterial activity and to degrade pollutants. Immobilised bacterial beads that contain nanomagnetic particles allow bead recycling and reuse. In this study, our objective was to produce cross-linked nanomagnetic chitosan beads (MCBs) for the biodegradation of benzophenone-type UV filter chemicals such as 2,4-dihydroxybenzophenone (BP-1) and oxybenzone (BP-3). We found that the optimal concentration for creating these MCBs to be 1.2% by weight chitosan and 10% by weight nano-magnetite. We selected and isolated six benzophenone-n (BPs)-biodegrading bacteria identified to be various Pseudomonas spp., a Gordonia sp., and Rhodococcus zopfii; these were used to create MCBs that were able to effectively biodegrade BP-1 or BP-3 as a sole carbon source. Both BPs were effectively biodegraded and mineralised over 8 days in the presence of the selected MCB-immobilised bacterial strains. The highest pseudo-first-order constant rates for BP biodegradation were 8.7 × 10-3 h-1 for BP-1 (strain BP1-D) and 1.02 × 10-3 h-1 for BP-3 (strain BP3-1). The mechanical strength of the MCBs was measured to be above 90% based on recovered weight. The MCBs released their bacteria at rates in the range of 104-105 CFU/day. We also determined the pathway through which the BPs were being aerobically biodegraded based on the GC/MS profiles of the intermediates. Our findings provide a novel strategy for treating BPs via the use of reusable and recyclable MCBs that are cheap, easy and fast to synthesise.
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Affiliation(s)
- Sai Hung Lau
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan
| | - I-Chen Lin
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan
| | - Ching-Lun Su
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan
| | - Yi-Tang Chang
- Department of Microbiology, Soochow University, Taipei, 11102, Taiwan.
| | - Wann-Neng Jane
- Institute of Plant and Microbial Biology, Academia Sinica. Nankang, Taipei, 11529, Taiwan
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6
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Hidangmayum A, Debnath A, Guru A, Singh BN, Upadhyay SK, Dwivedi P. Mechanistic and recent updates in nano-bioremediation for developing green technology to alleviate agricultural contaminants. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY : IJEST 2022; 20:1-26. [PMID: 36196301 PMCID: PMC9521565 DOI: 10.1007/s13762-022-04560-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/29/2022] [Accepted: 09/17/2022] [Indexed: 05/09/2023]
Abstract
The rise in environmental pollutant levels in recent years is mostly attributable to anthropogenic activities such as industrial, agricultural and other activities. Additionally, these activities may produce excessive levels of dangerous toxicants such as heavy metals, organic pollutants including pesticide and herbicide chemicals, and sewage discharges from residential and commercial sources. With a focus on environmentally friendly, sustainable technology, new technologies such as combined process of nanotechnology and bioremediation are urgently needed to accelerate the cost-effective remediation process to alleviate toxic contaminants than the conventional remediation methods. Numerous studies have shown that nanoparticles possess special qualities including improved catalysis and adsorption as well as increased reactivity. Currently, microorganisms and their extracts are being used as promising, environmentally friendly catalysts for engineered nanomaterial. In the long term, this combination of both technologies called nano-bioremediation may significantly alter the field of environmental remediation since it is more intelligent, safe, environmentally friendly, economical and green. This review provides an overview of soil and water remediation techniques as well as the use of nano-bioremediation, which is made from various living organisms. Additionally, current developments related to the mechanism, model and kinetic studies for remediation of agricultural contaminants have been discussed.
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Affiliation(s)
- A. Hidangmayum
- Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - A. Debnath
- Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi, India
| | - A. Guru
- Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - B. N. Singh
- Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - S. K. Upadhyay
- Department of Environmental Science, V.B.S. Purvanchal University, Jaunpur, India
| | - P. Dwivedi
- Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
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7
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Vilela JAP, Bonsanto FP, Cunha RL. Mechanical properties of gellan gum beads prepared with potassium or calcium ions. J Texture Stud 2022; 53:531-539. [DOI: 10.1111/jtxs.12684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/03/2022] [Accepted: 04/06/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Joice Aline Pires Vilela
- Department of Food Engineering and Technology, School of Food Engineering University of Campinas (UNICAMP) Campinas SP Brazil
| | - Fabiana Perrechil Bonsanto
- Department of Chemical Engineering, Institute of Environmental, Chemical and Pharmaceutical Sciences Federal University of São Paulo (UNIFESP) Diadema SP Brazil
| | - Rosiane Lopes Cunha
- Department of Food Engineering and Technology, School of Food Engineering University of Campinas (UNICAMP) Campinas SP Brazil
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8
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Shahabivand S, Mortazavi SS, Mahdavinia GR, Darvishi F. Phenol biodegradation by immobilized Rhodococcus qingshengii isolated from coking effluent on Na-alginate and magnetic chitosan-alginate nanocomposite. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 307:114586. [PMID: 35085972 DOI: 10.1016/j.jenvman.2022.114586] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 01/02/2022] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Phenol is a hazardous organic solvent to living organisms, even in its small amounts. In order to bioremediation of phenol from aqueous solution, a novel bacterial strain was isolated from coking wastewater, identified as Rhodococcus qingshengii based on 16S rRNA sequence analysis and named as strain Sahand110. The phenol-biodegrading capabilities of the free and immobilized cells of Sahand110 on the beads of Na-alginate (NA) and magnetic chitosan-alginate (MCA) nanocomposite were evaluated under different initial phenol concentrations (200, 400, 600, 800 and 1000 mg/L). Results illustrated that Sahand110 was able to grow and complete degrade phenol up to 600 mg/L, as the sole carbon and energy source. Immobilized cells of Sahand110 on NA and MCA were more competent than its free cells in degradation of high phenol concentrations, 100% of 1000 mg/L phenol within 96 h, indicating the improved tolerance and performance of the immobilized cells against phenol toxicity. Therefore, the immobilized Sahand110 on the studied beads, especially MCA bead regarding its suitable properties, has significant potential to enhanced bioremediation of phenol-rich wastewaters.
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Affiliation(s)
- Saleh Shahabivand
- Department of Biology, Faculty of Science, University of Maragheh, Maragheh, Iran.
| | | | | | - Farshad Darvishi
- Department of Biology, Faculty of Science, University of Maragheh, Maragheh, Iran; Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
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Chen Y, Zhao M, Hu L, Wang Z, Hrynsphan D, Chen J. Characterization and Functional Analysis of Bacillus aryabhattai CY for Acrylic Acid Biodegradation: Immobilization and Metabolic Pathway. BIOTECHNOL BIOPROC E 2021. [DOI: 10.1007/s12257-021-0025-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Ghosh P, Mukherji S. Environmental contamination by heterocyclic Polynuclear aromatic hydrocarbons and their microbial degradation. BIORESOURCE TECHNOLOGY 2021; 341:125860. [PMID: 34614557 DOI: 10.1016/j.biortech.2021.125860] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Heterocyclic polynuclear aromatic hydrocarbons (PAHs) have been detected in all environmental matrices at few ppb to several ppm concentrations and they are characterized by high polarity. Some heterocyclic PAHs are mutagenic and carcinogenic to humans and various organisms. Despite being potent environmental pollutants, these compounds have received less attention. This paper focuses on the sources and occurrence of these compounds and their microbial degradation using diverse species of bacteria, fungi, and algae. Complete removal of 1.8 to 2614 mg/L of nitrogen heterocyclic PAH (PANH), 0.27 to 184 mg/L of sulfur heterocyclic PAH (PASH), and 0.6 to 120 mg/L of oxygen heterocyclic PAH (PAOH) compounds by various microbial species was observed between 3 h and 18 days, 8 h to 6 days, and 4 h to 250 h, respectively under aerobic condition. Strategies for enhancing the removal of heterocyclic PAHs from aquatic systems are also discussed along with the challenges.
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Affiliation(s)
- Prasenjit Ghosh
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Powai, Mumbai 400076, India; Department of Civil Engineering, NIT Tiruchirappalli, Tiruchirappalli, Tamil Nadu 620015, India
| | - Suparna Mukherji
- Environmental Science and Engineering Department (ESED), Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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11
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Chen Z, Yang G, Hao X, Samak NA, Jia Y, Peh S, Mu T, Yang M, Xing J. Recent advances in microbial capture of hydrogen sulfide from sour gas via sulfur-oxidizing bacteria. Eng Life Sci 2021; 21:693-708. [PMID: 34690639 PMCID: PMC8518563 DOI: 10.1002/elsc.202100006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/23/2021] [Accepted: 04/30/2021] [Indexed: 01/05/2023] Open
Abstract
Biological desulfurization offers several remarkably environmental advantages of operation at ambient temperature and atmospheric pressure, no demand of toxic chemicals as well as the formation of biologically re-usable sulfur (S0), which has attracted increasing attention compared to conventionally physicochemical approaches in removing hydrogen sulfide from sour gas. However, the low biomass of SOB, the acidification of process solution, the recovery of SOB, and the selectivity of bio-S0 limit its industrial application. Therefore, more efforts should be made in the improvement of the BDS process for its industrial application via different research perspectives. This review summarized the recent research advances in the microbial capture of hydrogen sulfide from sour gas based on strain modification, absorption enhancement, and bioreactor modification. Several efficient solutions to limitations for the BDS process were proposed, which paved the way for the future development of BDS industrialization.
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Affiliation(s)
- Zheng Chen
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Gama Yang
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Xuemi Hao
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Nadia A. Samak
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
- Processes Design and Development DepartmentEgyptian Petroleum Research InstituteCairoEgypt
| | - Yunpu Jia
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Sumit Peh
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Tingzhen Mu
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
| | - Maohua Yang
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
| | - Jianmin Xing
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
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12
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Abdul Manaf SA, Mohamad Fuzi SFZ, Abdul Manas NH, Md Illias R, Low KO, Hegde G, Che Man R, Wan Azelee NI, Matias-Peralta HM. Emergence of nanomaterials as potential immobilization supports for whole cell biocatalysts and cell toxicity effects. Biotechnol Appl Biochem 2020; 68:1128-1138. [PMID: 32969042 DOI: 10.1002/bab.2034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/12/2020] [Indexed: 12/21/2022]
Abstract
The traditional approach of fermentation by a free cell system has limitations of low productivity and product separation that need to be addressed for production enhancement and cost effectiveness. One of potential methods to solve the problems is cell immobilization. Microbial cell immobilization allows more efficient up-scaling by reducing the nonproductive growth phase, improving product yield and simplifying product separation. Furthermore, the emergence of nanomaterials such as carbon nanotubes, graphene, and metal-based nanomaterials with excellent functional properties provides novel supports for cell immobilization. Nanomaterials have catalytic properties that can provide specific binding site with targeted cells. However, the toxicity of nanomaterials towards cells has hampered its application as it affects the biological system of the cells, which cannot be neglected in any way. This gray area in immobilization is an important concern that needs to be addressed and understood by researchers. This review paper discusses an overview of nanomaterials used for cell immobilization with special focus on its toxicological challenges and how by understanding physicochemical properties of nanomaterials could influence the toxicity and biocompatibility of the cells.
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Affiliation(s)
- Shoriya Aruni Abdul Manaf
- Department of Technology and Natural Resources, Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
| | - Siti Fatimah Zaharah Mohamad Fuzi
- Department of Technology and Natural Resources, Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia
| | - Nor Hasmaliana Abdul Manas
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malasiya.,Institute of Bioproduct Development, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Rosli Md Illias
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malasiya
| | | | - Gurumurthy Hegde
- Centre for Nanomaterials and Displays, BMS College of Engineering, Bangalore, India
| | - Rohaida Che Man
- Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Pahang, Malaysia
| | - Nur Izyan Wan Azelee
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malasiya.,Institute of Bioproduct Development, Universiti Teknologi Malaysia, Johor, Malaysia
| | - Hazel Monica Matias-Peralta
- Freshwater Aquaculture Center-College of Fisheries, Central Luzon State University, Nueva Ecija, Philippines
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Mitra M, Nguyen KMAK, Box TW, Gilpin JS, Hamby SR, Berry TL, Duckett EH. Isolation and characterization of a novel Sphingobium yanoikuyae strain variant that uses biohazardous saturated hydrocarbons and aromatic compounds as sole carbon sources. F1000Res 2020; 9:767. [PMID: 32934808 PMCID: PMC7477647 DOI: 10.12688/f1000research.25284.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/14/2020] [Indexed: 01/09/2023] Open
Abstract
Background: Green micro-alga,
Chlamydomonas reinhardtii (a Chlorophyte), can be cultured in the laboratory heterotrophically or photo-heterotrophically in
Tris-
Phosphate-
Acetate (TAP) medium, which contains acetate as the carbon source.
Chlamydomonas can convert acetate in the TAP medium to glucose via the glyoxylate cycle, a pathway present in many microbes and higher plants. A novel bacterial strain, CC4533, was isolated from a contaminated TAP agar medium culture plate of a
Chlamydomonas wild type strain. In this article, we present our research on the isolation, and biochemical and molecular characterizations of CC4533. Methods: We conducted several microbiological tests and spectrophotometric analyses to biochemically characterize CC4533. The 16S rRNA gene of CC4533 was partially sequenced for taxonomic identification. We monitored the growth of CC4533 on Tris-Phosphate (TP) agar medium (lacks a carbon source) containing different sugars, aromatic compounds and saturated hydrocarbons, to see if CC4533 can use these chemicals as the sole source of carbon. Results: CC4533 is a Gram-negative, non-enteric yellow pigmented, aerobic, mesophilic bacillus. It is alpha-hemolytic and oxidase-positive. CC4533 can ferment glucose, sucrose and lactose, is starch hydrolysis-negative, resistant to penicillin, polymyxin B and chloramphenicol. CC4533 is sensitive to neomycin. Preliminary spectrophotometric analyses indicate that CC4533 produces b-carotenes. NCBI-BLAST analyses of the partial 16S rRNA gene sequence of CC4533 show 99.55% DNA sequence identity to that of
Sphingobium yanoikuyae strain PR86 and
S. yanoikuyae strain NRB095. CC4533 can use cyclo-chloroalkanes, saturated hydrocarbons present in car motor oil, polyhydroxyalkanoate, and mono- and poly-cyclic aromatic compounds, as sole carbon sources for growth. Conclusions: Taxonomically, CC4533 is very closely related to the alpha-proteobacterium
S. yanoikuyae, whose genome has been sequenced. Future research is needed to probe the potential of CC4533 for environmental bioremediation. Whole genome sequencing of CC4533 will confirm if it is a novel strain of
S. yanoikuyae or a new
Sphingobium species.
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Affiliation(s)
- Mautusi Mitra
- Biology Department, University of West Georgia, Carrollton, GA, 30118, USA
| | - Kevin Manoap-Anh-Khoa Nguyen
- Biology Department, University of West Georgia, Carrollton, GA, 30118, USA.,Department of Mechanical Engineering, Kennesaw State University, Marietta, GA, 30060, USA
| | - Taylor Wayland Box
- Biology Department, University of West Georgia, Carrollton, GA, 30118, USA
| | - Jesse Scott Gilpin
- Biology Department, University of West Georgia, Carrollton, GA, 30118, USA
| | - Seth Ryan Hamby
- Biology Department, University of West Georgia, Carrollton, GA, 30118, USA
| | - Taylor Lynne Berry
- Carrollton High School, Carrollton, GA, 30117, USA.,Department of Chemistry and Biochemistry, University of North Georgia, Dahlonega, GA, 30597, USA
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Manjunatha JG. Poly (Adenine) Modified Graphene-Based Voltammetric Sensor for the Electrochemical Determination of Catechol, Hydroquinone and Resorcinol. ACTA ACUST UNITED AC 2020. [DOI: 10.2174/1874123102014010052] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Objective:
This paper presents the application of Poly (Adenine) Modified Graphene Paste Electrode (PAMGPE) for the analysis of Catechol (CC) with Resorcinol (RC) and Hydroquinone (HQ) by a voltammetric technique.
Methods:
Electropolymerization technique was utilized for the modification of the sensor surface. The electrode surface was characterized by Field Emission Scanning Electron Microscopy (FE-SEM). Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV) were used to study the redox behavior of CC, RC and HQ.
Results:
Oxidation peak current of CC increased linearly with the concentration of CC in the range from 2×10-6- 8×10-6 M and 1×10-5-1.5 ×10-4 M with a detection limit of 2.4×10-7 M. The practical application of the developed sensor was verified as exact for the determination of CC in water sample.
Conclusion:
The stability, repeatability, and reproducibility of the developed electrode were studied and established good characteristics. Furthermore, the PAMGPE was examined for the simultaneous determination of CC, RC and HQ.
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15
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Giese EC, Silva DDV, Costa AFM, Almeida SGC, Dussán KJ. Immobilized microbial nanoparticles for biosorption. Crit Rev Biotechnol 2020; 40:653-666. [DOI: 10.1080/07388551.2020.1751583] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ellen C. Giese
- Service of Extractive Metallurgy and Bioprocesses, Centre for Mineral Technology, CETEM, Rio de Janeiro, Brazil
| | - Debora D. V. Silva
- Department of Biochemistry and Organic Chemistry, Institute of Chemistry, São Paulo State University-UNESP, Araraquara, São Paulo, Brazil
| | | | - Sâmilla G. C. Almeida
- Department of Engineering, Physics and Mathematics, Institute of Chemistry, São Paulo State University-UNESP, Araraquara, São Paulo, Brazil
| | - Kelly J. Dussán
- Department of Engineering, Physics and Mathematics, Institute of Chemistry, São Paulo State University-UNESP, Araraquara, São Paulo, Brazil
- Bioenergy Research Institute (IPBEN), São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
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16
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Liu L, Zhang H, He J, Dong S. Investigation on the stress response of microbes in acute toxicity assay. Anal Chim Acta 2020; 1099:46-51. [DOI: 10.1016/j.aca.2019.11.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 10/30/2019] [Accepted: 11/14/2019] [Indexed: 02/07/2023]
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17
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Lyu CJ, Liu L, Huang J, Zhao WR, Hu S, Mei LH, Yao SJ. Biosynthesis of γ-aminobutyrate by engineered Lactobacillus brevis cells immobilized in gellan gum gel beads. J Biosci Bioeng 2019; 128:123-128. [DOI: 10.1016/j.jbiosc.2019.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 01/03/2019] [Accepted: 01/17/2019] [Indexed: 01/07/2023]
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18
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Optimization of fermentation parameters with magnetically immobilized Bacillus natto on Ginkgo seeds and evaluation of bioactivity and safety. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.06.046] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Hou N, Xia Y, Wang X, Liu H, Liu H, Xun L. H 2S biotreatment with sulfide-oxidizing heterotrophic bacteria. Biodegradation 2018; 29:511-524. [PMID: 30141069 PMCID: PMC6245092 DOI: 10.1007/s10532-018-9849-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 08/10/2018] [Indexed: 12/17/2022]
Abstract
Many industrial activities produce H2S, which is toxic at high levels and odorous at even very low levels. Chemolithotrophic sulfur-oxidizing bacteria are often used in its remediation. Recently, we have reported that many heterotrophic bacteria can use sulfide:quinone oxidoreductase and persulfide dioxygenase to oxidize H2S to thiosulfate and sulfite. These bacteria may also potentially be used in H2S biotreatment. Here we report how various heterotrophic bacteria with these enzymes were cultured with organic compounds and the cells were able to rapidly oxidize H2S to zero-valence sulfur and thiosulfate, causing no apparent acidification. Some also converted the produced thiosulfate to tetrathionate. The rates of sulfide oxidation by some of the tested bacteria in suspension, ranging from 8 to 50 µmol min−1 g−1 of cell dry weight at pH 7.4, sufficient for H2S biotreatment. The immobilized bacteria removed H2S as efficiently as the bacteria in suspension, and the inclusion of Fe3O4 nanoparticles during immobilization resulted in increased efficiency for sulfide removal, in part due to chemical oxidation H2S by Fe3O4. Thus, heterotrophic bacteria may be used for H2S biotreatment under aerobic conditions.
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Affiliation(s)
- Ningke Hou
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, People's Republic of China
| | - Yongzhen Xia
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, People's Republic of China
| | - Xia Wang
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, People's Republic of China
| | - Huaiwei Liu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, People's Republic of China
| | - Honglei Liu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, People's Republic of China.
| | - Luying Xun
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, People's Republic of China.
- School of Molecular Biosciences, Washington State University, Pullman, WA, 99164-7520, USA.
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20
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Ghorbannezhad H, Moghimi H, Taheri RA. Enhanced biodegradation of phenol by magnetically immobilized Trichosporon cutaneum. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1353-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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21
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Zamani H, Rakhshaee R, Garakoui SR. Two contrary roles of Fe 3O 4 nanoparticles on kinetic and thermodynamic of Paclitaxel degradation by Citrobacter amalonaticus Rashtia immobilized on sodium alginate gel beads. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:566-575. [PMID: 29102639 DOI: 10.1016/j.jhazmat.2017.10.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 10/23/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
Roles of Fe3O4 nanoparticles (NPs) on biodegradation of Paclitaxel by Citrobacter amalonaticus immobilized on alginate gel beads were investigated. Limitation in substrate diffusion is the major drawback of the cell immobilization method. To overcome this problem, bacterial cells were immobilized on the gel beads containing different concentrations (5-20mg/mL) of Fe3O4 NPs and their Paclitaxel degrading potential at different temperatures was investigated using kinetic and thermodynamic modeling. Co-immobilization of bacterial cells with 5, 10 and 20mg/mL Fe3O4 NPs enhanced biodegradation efficiencies to 66%, 80% and 78%, respectively, compared to the NPs free immobilized cells (41.9%). The optimum concentration of Fe3O4 NPs (10mg/mL) had both inhibitory and accelerating effects on paclitaxel degradation depending on the incubation time and temperature. Increasing dose of Fe3O4 NPs could increase paclitaxel degradation, despite increasing of thermodynamic inhibitory factors, only when longer time and higher temperature were used. ΔG values increased about 11.2 KJ/mol at all temperatures of 285, 295 and 305K, and ΔH increased 54.4%, in comparison with the treatment without NPs. This indicates that, inclusion of Fe3O4 NPs into the immobilization gels can increase the local concentration of Paclitaxel (with OH2+ groups) and bacterial accessibility to the substrate and thus enhance biodegradation efficiency.
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Affiliation(s)
- Hojjatolah Zamani
- Department of Biology, Faculty of Science, University of Guilan, Iran.
| | - Roohan Rakhshaee
- Department of Chemistry, Faculty of Science, University of Guilan, Iran
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22
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Zhao Q, Yue S, Bilal M, Hu H, Wang W, Zhang X. Comparative genomic analysis of 26 Sphingomonas and Sphingobium strains: Dissemination of bioremediation capabilities, biodegradation potential and horizontal gene transfer. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 609:1238-1247. [PMID: 28787798 DOI: 10.1016/j.scitotenv.2017.07.249] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 07/27/2017] [Accepted: 07/28/2017] [Indexed: 05/12/2023]
Abstract
Bacteria belonging to the genera Sphingomonas and Sphingobium are known for their ability to catabolize aromatic compounds. In this study, we analyzed the whole genome sequences of 26 strains in the genera Sphingomonas and Sphingobium to gain insight into dissemination of bioremediation capabilities, biodegradation potential, central pathways and genome plasticity. Phylogenetic analysis revealed that both Sphingomonas sp. strain BHC-A and Sphingomonas paucimobilis EPA505 should be placed in the genus Sphingobium. The bph and xyl gene cluster was found in 6 polycyclic aromatic hydrocarbons-degrading strains. Transposase and IS coding genes were found in the 6 gene clusters, suggesting the mobility of bph and xyl gene clusters. β-ketoadipate and homogentisate pathways were the main central pathways in Sphingomonas and Sphingobium strains. A large number of oxygenase coding genes were predicted in the 26 genomes, indicating a huge biodegradation potential of the Sphingomonas and Sphingobium strains. Horizontal gene transfer related genes and prophages were predicted in the analyzed strains, suggesting the ongoing evolution and shaping of the genomes. Analysis of the 26 genomes in this work contributes to the understanding of dispersion of bioremediation capabilities, bioremediation potential and genome plasticity in strains belonging to the genera Sphingomonas and Sphingobium.
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Affiliation(s)
- Qiang Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shengjie Yue
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muhammad Bilal
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hongbo Hu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; National Experimental Teaching Center for Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xuehong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
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23
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Jiang J, Liu Y, Liu Y, Hou S. A Novel ZnONPs/PVA-Functionalized Biomaterials for Bacterial Cells Immobilization and its Strengthening Effects on Quinoline Biodegradation. Curr Microbiol 2017; 75:316-322. [DOI: 10.1007/s00284-017-1382-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/23/2017] [Indexed: 11/29/2022]
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24
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Ramachandran S, Sivasamy A. Nanocrystalline ZnO as a Visible Active Photocatalyst for the Degradation of Benzene-1,4-diol. INTERNATIONAL JOURNAL OF NANOSCIENCE 2017. [DOI: 10.1142/s0219581x17600080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We have synthesized nanocrystalline ZnO by a simple precipitation method. The prepared ZnO was found to be highly phase pure and nanocrystalline hexagonal wurtzite structure. UV–Visible–DRS spectroscopy showed the material to have bandgap energy of 3.22[Formula: see text]eV. HR-SEM image revealed the material to be made up of distinct hexagonal particles with a highly porous surface. AFM analysis was employed to confirm the high surface roughness and porosity of the material. The photocatalytic activity of the prepared ZnO was evaluated by the degradation of benzene-1,4-diol (hydroquinone), under visible light irradiation. Preliminary experiments showed the catalyst to be effective at neutral pH with an optimum catalyst dosage of 4[Formula: see text]g/L. Kinetic studies showed the degradation reaction to follow pseudo-first-order kinetics. In the presence of commonly used industrial electrolytes, the catalyst exhibited a decrease in efficiency. Reusability studies showed the catalytic efficiency of ZnO to diminish marginally after the third cycle of reuse.
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Affiliation(s)
- Saranya Ramachandran
- Chemical Engineering Area, CSIR-Central Leather Research Institute, Adyar, Chennai-600020, Tamil Nadu, India
| | - A. Sivasamy
- Chemical Engineering Area, CSIR-Central Leather Research Institute, Adyar, Chennai-600020, Tamil Nadu, India
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25
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Zang Y, Guo N, Jiao J, Wang X, Gai Q, Xu W, Fu Y. Application of magnetically immobilized edible fungus for the biotransformation of panax notoginseng saponin Rb1 to Rd and Rg3. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1061-1062:306-313. [DOI: 10.1016/j.jchromb.2017.07.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 07/10/2017] [Accepted: 07/21/2017] [Indexed: 11/15/2022]
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26
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Yin C, Zheng T, Chang X. Biosynthesis of S-Adenosylmethionine by Magnetically Immobilized Escherichia coli Cells Highly Expressing a Methionine Adenosyltransferase Variant. Molecules 2017; 22:E1365. [PMID: 28820476 PMCID: PMC6152220 DOI: 10.3390/molecules22081365] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 08/16/2017] [Accepted: 08/16/2017] [Indexed: 11/19/2022] Open
Abstract
S-Adenosylmethionine (SAM) is a natural metabolite having important uses in the treatment of various diseases. To develop a simple and effective way to produce SAM, immobilized Escherichia coli cells highly expressing an engineered variant of methionine adenosyltransferase (MAT) were employed to synthesize SAM. The recombinant I303V MAT variant was successfully produced at approximately 900 mg/L in a 10-L bioreactor and exhibited significantly less product inhibition and had a four-fold higher specific activity (14.2 U/mg) than the wild-type MAT (3.6 U/mg). To reduce the mass transfer resistance, the free whole-cells were permeabilized and immobilized using gellan gum gel as support in the presence of 100 mg/L Fe₃O₄ nanoparticles, and the highest activity (4152.4 U/L support) was obtained, with 78.2% of the activity recovery. The immobilized cells were more stable than the free cells under non-reactive conditions, with a half-life of 9.1 h at 50 °C. Furthermore, the magnetically immobilized cells were employed to produce SAM at a 40-mM scale. The residual activity of the immobilized cells was 67% of its initial activity after 10 reuses, and the conversion rate of ATP was ≥95% in all 10 batches. These results indicated that magnetically immobilized cells should be a promising biocatalyst for the biosynthesis of SAM.
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Affiliation(s)
- Chunli Yin
- School of Biological and Environmental Engineering, Xi'an University, Xi'an 710065, China.
| | - Tao Zheng
- School of Biological and Environmental Engineering, Xi'an University, Xi'an 710065, China.
| | - Xin Chang
- School of Biological and Environmental Engineering, Xi'an University, Xi'an 710065, China.
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27
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Xue L, Liu J, Li M, Tan L, Ji X, Shi S, Jiang B. Enhanced treatment of coking wastewater containing phenol, pyridine, and quinoline by integration of an E-Fenton process into biological treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9765-9775. [PMID: 28251539 DOI: 10.1007/s11356-017-8644-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
In this study, the pyridine and quinoline could be cometabolically degraded by phenol-cultivated Comamonas sp. strain JB(strain JB). The integration of magnetically immobilized cells of JB and an E-Fenton process into one entity has been designed to prepare a novel integration system to improve the treatment efficiency of phenol, pyridine, and quinoline in coking wastewater. The optimal pH for the integration system was 3.5. Degradation rates of phenol, pyridine, quinoline, and COD by the integration system were significantly exceeded the sum degradation rates of the single E-Fenton process and magnetically immobilized cells at the optimal voltage of 1 V. During the 6 cycles, the integration system still showed higher degradation rates than that by the single magnetically immobilized cells for all the compounds. These findings demonstrated that a synergistic effect existed between the biological treatment and the E-Fenton process, and the applied voltage in the integration system played the key roles in the synergistic effect, which not only electrogenerated H2O2 but also improved the activity of phenol hydroxylase and strain JB concentration.
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Affiliation(s)
- Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Xiangyu Ji
- School of Life Science, Liaoning Normal University, Dalian, 116081, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
| | - Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian, 116081, China.
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, 116023, China.
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Horemans B, Raes B, Vandermaesen J, Simanjuntak Y, Brocatus H, T'Syen J, Degryse J, Boonen J, Wittebol J, Lapanje A, Sørensen SR, Springael D. Biocarriers Improve Bioaugmentation Efficiency of a Rapid Sand Filter for the Treatment of 2,6-Dichlorobenzamide-Contaminated Drinking Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:1616-1625. [PMID: 28027645 DOI: 10.1021/acs.est.6b05027] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Aminobacter sp. MSH1 immobilized in an alginate matrix in porous stones was tested in a pilot system as an alternative inoculation strategy to the use of free suspended cells for biological removal of micropollutant concentrations of 2,6-dichlorobenzamide (BAM) in drinking water treatment plants (DWTPs). BAM removal rates and MSH1 cell numbers were recorded during operation and assessed with specific BAM degradation rates obtained in lab conditions using either freshly grown cells or starved cells to explain reactor performance. Both reactors inoculated with either suspended or immobilized cells showed immediate BAM removal under the threshold of 0.1 μg/L, but the duration of sufficient BAM removal was 2-fold (44 days) longer for immobilized cells. The longer sufficient BAM removal in case of immobilized cells compared to suspended cells was mainly explained by a lower initial loss of MSH1 cells at operational start due to volume replacement and shear. Overall loss of activity in the reactors though was due to starvation, and final removal rates did not differ between reactors inoculated with immobilized and suspended cells. Management of assimilable organic carbon, in addition to cell immobilization, appears crucial for guaranteeing long-term BAM degradation activity of MSH1 in DWTP units.
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Affiliation(s)
- Benjamin Horemans
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
| | - Bart Raes
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
| | - Johanna Vandermaesen
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
| | - Yanti Simanjuntak
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
| | - Hannelore Brocatus
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
| | - Jeroen T'Syen
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
| | - Julie Degryse
- De Watergroep , Vooruitgangstraat 189, 1030 Brussels, Belgium
| | - Jos Boonen
- De Watergroep , Vooruitgangstraat 189, 1030 Brussels, Belgium
| | | | - Ales Lapanje
- Josef Stefan Institute , Jamova 49, 1000 Ljubljana, Slovenia
- National Research Saratov State University , Astrakhanskaya 83, 410012 Saratov, Russian Federation
| | - Sebastian R Sørensen
- Department of Geochemistry, Geological Survey of Denmark and Greenland , Øster Voldgade 10, 1350 Copenhagen K, Denmark
| | - Dirk Springael
- Division of Soil and Water Management, Department of Earth and Environmental Sciences, Faculty of Bioscience Engineering, KU Leuven , Kasteelpark Arenberg 20 bus 2459, 3001 Heverlee, Belgium
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Fan Y, Yi J, Hua X, Zhang Y, Yang R. Preparation and characterization of gellan gum microspheres containing a cold-adapted β-galactosidase from Rahnella sp. R3. Carbohydr Polym 2017; 162:10-15. [PMID: 28224885 DOI: 10.1016/j.carbpol.2017.01.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/01/2017] [Accepted: 01/06/2017] [Indexed: 11/24/2022]
Abstract
R-β-Gal is a cold-adapted β-galactosidase that is able to hydrolyze lactose and has the potential to produce low-lactose or lactose-free dairy products at low temperatures (4°C). Cold-adapted enzymes unfold at moderate temperatures due to the lower intramolecular stabilizing interactions necessary for flexibility at low temperatures. To increase stability and usage-performance, R-β-Gal was encapsulated in gellan gum by injecting an aqueous solution into two different hardening solutions (10mM CaCl2 or 10mM MgCl2). Enzyme characteristics of both free and encapsulated R-β-Gal were carried out, and the different effects of two cations were investigated. R-β-Gal showed better thermal and pH stability after encapsulation. Ca2+ gels had higher encapsulation efficiency (71.4%) than Mg2+ (66.7%) gels, and Ca2+ formed larger inner and surface pores. R-β-Gal was released from the Ca2+ hydrogel beads more rapidly than the Mg2+ hydrogels during storage in aqueous solution due to the larger inner/surface pores of the matrix.
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Affiliation(s)
- Yuting Fan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 214122 Wuxi, China; US Department of Agriculture, Agriculture Research Service, Pacific West Area, Western Regional Research Center, Albany, CA 94710, USA.
| | - Jiang Yi
- College of Chemistry and Environmental Engineering, Shenzhen University, 518060 Shenzhen, China
| | - Xiao Hua
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 214122 Wuxi, China
| | - Yuzhu Zhang
- US Department of Agriculture, Agriculture Research Service, Pacific West Area, Western Regional Research Center, Albany, CA 94710, USA
| | - Ruijin Yang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 214122 Wuxi, China.
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Jiang B, Shi S, Song L, Tan L, Li M, Liu J, Xue L. Efficient treatment of phenolic wastewater with high salinity using a novel integrated system of magnetically immobilized cells coupling with electrodes. BIORESOURCE TECHNOLOGY 2016; 218:108-114. [PMID: 27347805 DOI: 10.1016/j.biortech.2016.06.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 06/17/2016] [Accepted: 06/19/2016] [Indexed: 06/06/2023]
Abstract
A novel integrated system in which magnetically immobilized cells coupled with a pair of stainless iron meshes-graphite plate electrodes has been designed and operated to enhance the treatment performance of phenolic wastewater under high salinity. With NaCl concentration increased, phenol, o-cresol, m-cresol, p-cresol and COD removal rates by integrated system increased significantly, which were obviously higher than the sum of removal rates by single magnetically immobilized cells and electrode reaction. This integrated system exhibited higher removal rates for all the compounds than that by single magnetically immobilized cells during six cycles for reuse, and it still performed better, even when the voltage was cut off. These results indicated that there was a coupling effect between biodegradation and electrode reaction. The investigation of phenol hydroxylase activity and cells concentration confirmed that electrode reaction played an important role in this coupling effect.
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Affiliation(s)
- Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
| | - Lun Song
- Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Meidi Li
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Jiaxin Liu
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Lanlan Xue
- School of Life Science, Liaoning Normal University, Dalian 116081, China
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Jiang B, Tan L, Ning S, Shi S. A novel integration system of magnetically immobilized cells and a pair of graphite plate-stainless iron mesh electrodes for the bioremediation of coking wastewater. BIORESOURCE TECHNOLOGY 2016; 216:684-690. [PMID: 27289060 DOI: 10.1016/j.biortech.2016.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
Magnetically immobilized cells of Comamonas sp. JB coupling with electrode reaction was developed to enhance the treatment efficiency of coking wastewater containing phenol, carbazole (CA), dibenzofuran (DBF), and dibenzothiophene (DBT). The pair of graphite plate-stainless iron mesh electrodes was chosen as the most suitable electrodes. Magnetically immobilized cells coupling with graphite plate-stainless iron mesh electrodes (coupling system) exhibited high degradation activity for all the compounds, which were significantly higher than the sum by single magnetically immobilized cells and electrode reaction at the optimal voltage. Recycling experiments demonstrated that the degradation activity of coupling system increased gradually during eight recycles, indicating that there was a coupling effect between the biodegradation and electrode reaction. Phenol hydroxylase and qPCR assays confirmed that appropriate electrical stimulation could improve phenol hydroxylase activity and promote cells growth. Toxicity assessment suggested the treatment of the coking wastewater by coupling system led to less toxicity than untreated wastewater.
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Affiliation(s)
- Bei Jiang
- School of Life Science, Liaoning Normal University, Dalian 116081, China; Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Shuxiang Ning
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
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Efficient biodegradation of chlorophenols in aqueous phase by magnetically immobilized aniline-degrading Rhodococcus rhodochrous strain. J Nanobiotechnology 2016; 14:5. [PMID: 26772816 PMCID: PMC4715327 DOI: 10.1186/s12951-016-0158-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/10/2016] [Indexed: 11/17/2022] Open
Abstract
Background Chlorophenols are environmental contaminants, which are highly toxic to living beings due to their carcinogenic, mutagenic and cytotoxic properties. Bacterial degradation has been considered a cost-effective and eco-friendly method of removing chlorophenols, compared to the traditional physical–chemical processes. Results In this study, we first developed an efficient process for the biodegradation of chlorophenols by magnetically immobilized Rhodococcus rhodochrous cells. R. rhodochrous DSM6263 degrades chlorophenols following the first step of hydroxylation at the ortho-positions of chlorophenolic rings. The cells immobilized by k-carrageenan with 9 g/L Fe3O4 nanoparticles could efficiently degrade 2-chlorophenol, 4-chlorophenol, 2,3-dichlorophenol and their mixture, which were even higher than those by free cells. The magnetically nanoparticle-immobilized cells could be used at least for six cycles. Conclusion Given the much easier separation by an external magnetic field and high degradation efficiency, this study provides a promising technique for improving biocatalysts used in the bioremediation process for chlorophenols in wastewater.
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Alves VD, Torres CAV, Freitas F. Bacterial polymers as materials for the development of micro/nanoparticles. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2015.1103239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Shi S, Qu Y, Tan L, Ma F. Biosynthesis of 1,2-dihydroxydibenzofuran by magnetically immobilized cells of Escherichia coli expressing phenol hydroxylase in liquid-liquid biphasic systems. BIORESOURCE TECHNOLOGY 2015; 197:72-78. [PMID: 26318924 DOI: 10.1016/j.biortech.2015.08.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 08/08/2015] [Accepted: 08/11/2015] [Indexed: 06/04/2023]
Abstract
Escherichia coli cells expressing phenol hydroxylase (designated as PHIND) were used to biosynthesize 1,2-dihydroxydibenzofuran (1,2-dihydroxyDBF) from dibenzofuran (DBF). The pathway of DBF biotransformation by strain PHIND was proposed, in which DBF was initially monohydroxylated at C-1 and C-4 positions to produce 1- and 4-hydroxyDBF, then underwent successive hydroxylation to yield 1,2- and 3,4-dihydroxyDBF, of which 1,2-dihydroxyDBF was identified for the first time. Magnetically immobilized cells of strain PHIND in biphasic systems with dodecane as the solvent presented highest biosynthesis activity for 1,2-dihydroxyDBF, which was a 6.5-fold improvement compared to biosynthesis in aqueous system. The recycling experiments demonstrated that magnetically immobilized cells exhibited higher biosynthesis activity for 1,2-dihydroxyDBF than that by nonmagnetically immobilized cells during five cycles in biphasic systems. These works support the development of an efficient biosynthesis process using magnetically immobilized cells in biphasic systems and provide a promising technique for improving the productivity in 1,2-dihydroxyDBF biosynthesis.
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Affiliation(s)
- Shengnan Shi
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Yuanyuan Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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Zhuang H, Han H, Xu P, Hou B, Jia S, Wang D, Li K. Biodegradation of quinoline by Streptomyces sp. N01 immobilized on bamboo carbon supported Fe3O4 nanoparticles. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.03.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xu X, Cai Y, Song Z, Qiu X, Zhou J, Liu Y, Mu T, Wu D, Guan Y, Xing J. Desulfurization of immobilized sulfur-oxidizing bacteria, Thialkalivibrio versutus, by magnetic nanaoparticles under haloalkaliphilic conditions. Biotechnol Lett 2015; 37:1631-5. [DOI: 10.1007/s10529-015-1845-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 04/29/2015] [Indexed: 01/22/2023]
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Jiang B, Zhou Z, Dong Y, Wang B, Jiang J, Guan X, Gao S, Yang A, Chen Z, Sun H. Bioremediation of Petrochemical Wastewater Containing BTEX Compounds by a New Immobilized Bacterium Comamonas sp. JB in Magnetic Gellan Gum. Appl Biochem Biotechnol 2015; 176:572-81. [DOI: 10.1007/s12010-015-1596-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 03/20/2015] [Indexed: 11/28/2022]
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Liu F, Yu B. Efficient production of reuterin from glycerol by magnetically immobilized Lactobacillus reuteri. Appl Microbiol Biotechnol 2015; 99:4659-66. [PMID: 25805344 DOI: 10.1007/s00253-015-6530-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/04/2015] [Accepted: 03/07/2015] [Indexed: 02/01/2023]
Abstract
Reuterin is a compound that contains the monomeric, hydrated monomeric, and cyclic dimeric forms of 3-hydroxypropionaldehyde (3-HPA). It is widely used as a food preservative due to its antimicrobial properties, and 3-HPA is also an important precursor for several industrial chemicals. In this study, we first developed an efficient immobilization process involving magnetic cell entrapment for production of reuterin from glycerol by Lactobacillus reuteri. The cell growth condition was optimized by statistical approaches. High conversion efficiency was achieved using k-carrageenan as the immobilization support and Fe3O4 as magnetic nanoparticles. Furthermore, addition of 0.02 g/L vitamin B12, 10 mmol/L Mg(2+), and glucose in a molar ratio of 0.15 to glycerol significantly increased the conversion rate. Under optimal conditions, 235.9 mmol/L 3-HPA was produced from 250 mmol/L initial glycerol in 1.5 h, with a molar yield of 94.4 % and a productivity of 15.4 mmol/(g dry cell weight∙L∙h), which were the highest values to date. Thus, this study demonstrated a promising process for the improvement of biocatalyst efficiency in biotransformation.
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Affiliation(s)
- Feixia Liu
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China
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Liu YB, Qu D, Wen YJ, Ren HJ. Low-temperature biodegradation of aniline by freely suspended and magnetic modified Pseudomonas migulae AN-1. Appl Microbiol Biotechnol 2015; 99:5317-26. [DOI: 10.1007/s00253-015-6399-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 01/06/2015] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
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40
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Dao L, Grigoryeva T, Laikov A, Devjatijarov R, Ilinskaya O. Full-scale bioreactor pretreatment of highly toxic wastewater from styrene and propylene oxide production. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 108:195-202. [PMID: 25086231 DOI: 10.1016/j.ecoenv.2014.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 07/09/2014] [Accepted: 07/11/2014] [Indexed: 06/03/2023]
Abstract
The wastewater originating from simultaneous production of styrene and propylene oxide (SPO) is classified as highly polluted with chemical oxygen demand level in the range 5965 to 9137mgL(-1)-as well as highly toxic. The dilution factor providing for a 10 percent toxic effect of wastewater samples in a test with Paramecium caudatum was 8.0-9.5. Biological approach for pretreatment and detoxification of the wastewater under full-scale bioreactor conditions was investigated. The number of suspended microorganisms and the clean up efficiency were increased up to 5.5-6.58×10(8)CFUmL(-1) and 88 percent, respectively during the bioreactor's operation. Isolates in the Citrobacter, Burkholderia, Pseudomonas, and Paracoccus genera were dominant in the mature suspended, as well as the immobilized microbial community of the bioreactor. The most dominant representatives were tested for their ability to biodegrade the major components of the SPO wastewater and evidence of their role in the treatment process was demonstrated. The investigated pretreatment process allowed the wastewater to be detoxified for conventional treatment with activated sludge and was closely related to the maturation of the bioreactor's microbial community.
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Affiliation(s)
- Linh Dao
- Department of Microbiology, Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation.
| | - Tatiana Grigoryeva
- Department of Microbiology, Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation
| | - Alexander Laikov
- Department of Microbiology, Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation
| | - Ruslan Devjatijarov
- Department of Microbiology, Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation
| | - Olga Ilinskaya
- Department of Microbiology, Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation
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41
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Shi S, Qu Y, Ma F, Zhou J. Bioremediation of coking wastewater containing carbazole, dibenzofuran and dibenzothiophene by immobilized naphthalene-cultivated Arthrobacter sp. W1 in magnetic gellan gum. BIORESOURCE TECHNOLOGY 2014; 166:79-86. [PMID: 24905045 DOI: 10.1016/j.biortech.2014.05.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/10/2014] [Accepted: 05/12/2014] [Indexed: 06/03/2023]
Abstract
In this study, the cometabolic degradation of carbazole (CA), dibenzofuran (DBF), and dibenzothiophene (DBT) by immobilized Arthrobacter sp. W1 cells pregrown with naphthalene was investigated. Four kinds of polymers were evaluated as immobilization supports for strain W1. After comparison with agar, alginate, and κ-carrageenan, gellan gum was selected as the optimal immobilization support. Furthermore, magnetic Fe₃O₄ nanoparticle was selected as most suitable nanoparticle for immobilization and the optimal concentration was 80 mg/L. The relationship between specific degradation rate and the initial concentration of CA, DBF and DBT was described well by Michaelis-Menten kinetics. The recycling experiments demonstrated that the magnetically immobilized cells coupling with activation zeolite showed highly bioremediation activity on the coking wastewater containing high concentration of phenol, naphthalene, CA, DBF and DBT during seven recycles. Toxicity assessment indicated the treatment of the coking wastewater by magnetically immobilized cells with activation zeolite led to less toxicity than untreated wastewater.
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Affiliation(s)
- Shengnan Shi
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Yuanyuan Qu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Jiti Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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42
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Kostov G, Popova S, Gochev V, Koprinkova-Hristova P, Angelov M, Georgieva A. Modeling of Batch Alcohol Fermentation with Free and Immobilized YeastsSaccharomyces Cerevisiae46 EVD. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.5504/bbeq.2012.0025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Detoxification of hexavalent chromate by Amphibacillus sp. KSUCr3 cells immobilised in silica-coated magnetic alginate beads. BIOTECHNOL BIOPROC E 2014. [DOI: 10.1007/s12257-013-0373-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Li Y, Du X, Wu C, Liu X, Wang X, Xu P. An efficient magnetically modified microbial cell biocomposite for carbazole biodegradation. NANOSCALE RESEARCH LETTERS 2013; 8:522. [PMID: 24330511 PMCID: PMC3874645 DOI: 10.1186/1556-276x-8-522] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 12/04/2013] [Indexed: 05/24/2023]
Abstract
Magnetic modification of microbial cells enables to prepare smart biocomposites in bioremediation. In this study, we constructed an efficient biocomposite by assembling Fe3O4 nanoparticles onto the surface of Sphingomonas sp. XLDN2-5 cells. The average particle size of Fe3O4 nanoparticles was about 20 nm with 45.5 emu g-1 saturation magnetization. The morphology of Sphingomonas sp. XLDN2-5 cells before and after Fe3O4 nanoparticle loading was verified by scanning electron microscopy and transmission electronic microscopy. Compared with free cells, the microbial cell/Fe3O4 biocomposite had the same biodegradation activity but exhibited remarkable reusability. The degradation activity of the microbial cell/Fe3O4 biocomposite increased gradually during recycling processes. Additionally, the microbial cell/Fe3O4 biocomposite could be easily separated and recycled by an external magnetic field due to the super-paramagnetic properties of Fe3O4 nanoparticle coating. These results indicated that magnetically modified microbial cells provide a promising technique for improving biocatalysts used in the biodegradation of hazardous compounds.
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Affiliation(s)
- Yufei Li
- State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, People’s Republic of China
| | - Xiaoyu Du
- State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, People’s Republic of China
| | - Chao Wu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, People’s Republic of China
| | - Xueying Liu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, People’s Republic of China
| | - Xia Wang
- State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, People’s Republic of China
| | - Ping Xu
- Present address: State Key Laboratory of Microbial Metabolism, and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
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Isolation and characterization of Pseudomonas sp. STM 997 from soil sample having potentiality to degrade 3,6-dimethyl-1-keto-1,2,3,4-tetrahydrocarbazole: a novel approach. Appl Biochem Biotechnol 2012; 168:1765-77. [PMID: 22987067 DOI: 10.1007/s12010-012-9895-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 09/03/2012] [Indexed: 10/27/2022]
Abstract
A pure colony of a bacterium from contaminated soil was isolated by exploiting 3,6-dimethyl-1-keto-1,2,3,4-tetrahydrocarbazole, a novel carbazole derivative, having indole moiety as well as 3-methyl functionality both in aromatic and hydro-aromatic moiety, as a sole source of carbon and energy. Taxonomical studies, biochemical analysis, and 16S rDNA sequence analysis indicated that the isolated strain has close similarity with Pseudomonas sp. Thin-layer chromatography followed by HPLC and mass spectroscopic study indicates that the isolated Pseudomonas sp. STM 997 degrades 3,6-dimethyl-1-keto-1,2,3,4-tetrahydrocarbazole, and this strain may be useful in the bioremediation of environments contaminated by the compounds containing carbazole moiety with methyl substituents at various reactive sites. This study also provides an evidence in favor of the suggested biodegradation of 3-methylcarbazole to carbazole in plants.
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46
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Cheng Y, Lin H, Chen Z, Megharaj M, Naidu R. Biodegradation of crystal violet using Burkholderia vietnamiensis C09V immobilized on PVA-sodium alginate-kaolin gel beads. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 83:108-114. [PMID: 22789742 DOI: 10.1016/j.ecoenv.2012.06.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 06/19/2012] [Accepted: 06/19/2012] [Indexed: 06/01/2023]
Abstract
The strain, Burkholderia vietnamiensis C09V was immobilized on PVA-alginate-kaolin gel beads as a biomaterial to improve the degradation of crystal violet from aqueous solution. The results show that 98.6% (30 mg L(-1)) crystal violet was removed from aqueous solution using immobilized cells on PVA-alginate-kaolin gel beads, while 94.0% crystal violet was removed by free cells after degradation at the pH 5 and 30°C for 30 h. Kinetics studies show that the pseudo-second-order kinetics well described the adsorption of crystal violet on the PVA-alginate-kaolin beads. Biodegradation of crystal violet on immobilized cells was fitted well by first-order reaction kinetics, indicating that CV was adsorbed onto kaolin and followed their degradation by immobilized cells onto the the PVA-alginate-kaolin beads. Characterization with SEM shows that cells attached well to the surface of PVA-alginate-kaolin beads, leading to improved crystal violet transfer from aqueous solution to immobilized cells. In addition, UV-vis show that the absorption peak at 588 nm was reduced by the degraded N-bond linkages, as well as the formation of degrading products were observed by Fourier transform infrared (FTIR). These results suggest that crystal violet was biodegraded to N,N-dimethylaminophenol and Michler's Ketone prior to these intermediates being further degraded.
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Affiliation(s)
- Ying Cheng
- School of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, China
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47
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Daniele MA, Bandera YP, Sharma D, Rungta P, Roeder R, Sehorn MG, Foulger SH. Substrate-baited nanoparticles: a catch and release strategy for enzyme recognition and harvesting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2083-90. [PMID: 22532510 PMCID: PMC3516911 DOI: 10.1002/smll.201200013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 02/14/2012] [Indexed: 05/31/2023]
Abstract
The isolation of a single type of protein from a complex mixture is vital for the characterization of the function, structure, and interactions of the protein of interest and is typically the most laborious aspect of the protein purification process. In this work, a model system is utilized to show the efficacy of synthesizing a "baited" nanoparticle to capture and recycle enzymes (proteins that catalyze chemical reactions) from crude cell lysate. Enzyme trapping and recycling is illustrated with the carbazole 1,9a-dioxygenase (CARDO) system, an enzyme important in bioremediation and natural product synthesis. The enzymes are baited with azide-modified carbazolyl moieties attached to poly(propargyl acrylate) nanoparticles through a click transformation. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF) and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis indicates the single-step procedure to immobilize the enzymes on the particles is capable of significantly concentrating the protein from raw lysate and sequestering all required components of the protein to maintain bioactivity. These results establish a universal model applicable to concentrating and extracting known substrate-protein pairs, but it can be an invaluable tool in recognizing unknown protein-ligand affinities.
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Affiliation(s)
- Michael A Daniele
- Center for Optical Materials Science and Engineering Technologies, School of Materials Science and Engineering, Department of Bioengineering, Clemson University, Clemson, SC 29634, USA
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Chien M, Nakahata R, Ono T, Miyauchi K, Endo G. Mercury removal and recovery by immobilized Bacillus megaterium MB1. Front Chem Sci Eng 2012. [DOI: 10.1007/s11705-012-1284-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Genome sequence of Sphingobium yanoikuyae XLDN2-5, an efficient carbazole-degrading strain. J Bacteriol 2011; 193:6404-5. [PMID: 22038966 DOI: 10.1128/jb.06050-11] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sphingobium yanoikuyae XLDN2-5 is an efficient carbazole-degrading strain. Carbazole-degrading genes are accompanied on both sides by two copies of IS6100 elements. Here, we describe the draft genome sequence of strain XLDN2-5, which may provide important clues as to how it recruited exogenous genes to establish pathways to degrade the xenobiotics.
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50
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Daniele MA, Bandera YP, Foulger SH. Manipulation of Förster energy transfer of coupled fluorophores through biotransformation by Pseudomonas resinovorans CA10. Photochem Photobiol 2011; 88:129-34. [PMID: 22044050 DOI: 10.1111/j.1751-1097.2011.01023.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An alkyne-terminated anthracene and azide-terminated carbazole were joined through a copper-catalyzed cycloaddition to form a joined donor/acceptor pair. The photonic pair exhibited energy transfer when excited at the peak absorbance of carbazole and fluoresced with an anthracene spectral response. The fluorescent behavior was confirmed as Förster energy transfer (FRET). The lysate of Pseudomonas resinovorans CA10, a member of a predominant group of soil microorganisms that can metabolize a host of substrates, was employed to degrade the pair and alter the luminance spectral characteristics. The FRET was diminished and the corresponding, individual fluorescence of carbazole and anthracene returned. This general approach may find applications in single-cell metabolic studies and bioactivity assays.
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Affiliation(s)
- Michael A Daniele
- Center for Optical Materials Science and Engineering Technologies, School of Materials Science and Engineering, Clemson University, Clemson, SC, USA
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