51
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Zhao G, Wang F, Lang X, He B, Li J, Li X. Facile one-pot fabrication of cellulose nanocrystals and enzymatic synthesis of its esterified derivative in mixed ionic liquids. RSC Adv 2017. [DOI: 10.1039/c7ra02570j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
As an important cellulose derivative, esterified cellulose nanocrystals (E-CNCs) could be applied in biomedical and chemical industries.
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Affiliation(s)
- Guanglei Zhao
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Fengli Wang
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Xiongfei Lang
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Beihai He
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Junrong Li
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - Xiaofeng Li
- State Key Laboratory of Pulp and Paper Engineering
- South China University of Technology
- Guangzhou 510641
- China
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52
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Al Isawi WA, Rahbarirad S, Walker KA, Venter AR, Docherty KM, Szymczyna BR. Identification of metabolites produced during the complete biodegradation of 1-butyl-3-methylimidazolium chloride by an enriched activated sludge microbial community. CHEMOSPHERE 2017; 167:53-61. [PMID: 27710843 DOI: 10.1016/j.chemosphere.2016.09.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/22/2016] [Accepted: 09/25/2016] [Indexed: 06/06/2023]
Abstract
Ionic liquids (ILs) are highly polar solvents with unique physicochemical properties that make them promising green alternatives to volatile organic solvents. Since ILs can be toxic to organisms, the development of methods to degrade ILs into harmless molecules prior to disposal is critical to enhancing their green properties. In this study, metabolites generated during the biodegradation of 1-butyl-3-methylimidazolium chloride (BMIMCl) by an enriched, activated sludge microbial community were investigated. Biodegradation of BMIM and the metabolic products released into the growth media were examined using 1H-NMR spectroscopy and mass spectrometry. To the best of our knowledge, this is the first reported complete primary catabolism of the biodegradation-resistant BMIMCl ionic liquid. The bacterial community responsible for degradation was analyzed using a 16S-rRNA amplicon approach. Although the community was diverse, Bacteroidetes was the predominant phylum. The study provides a greater insight into imidazolium-based IL biodegradability and a means to proactively prevent the ecotoxicity of the BMIM cation and its metabolites, by complete primary biodegradation of the cation and removal of most resulting metabolites, prior to release into aquatic waste streams.
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Affiliation(s)
- Wisam A Al Isawi
- Department of Chemistry, Western Michigan University, Kalamazoo, MI 49008-5413, USA
| | - Sepideh Rahbarirad
- Department of Chemistry, Western Michigan University, Kalamazoo, MI 49008-5413, USA
| | - Katherine A Walker
- Department of Biological Sciences, Western Michigan University, Kalamazoo, MI 49008-5410, USA
| | - Andre R Venter
- Department of Chemistry, Western Michigan University, Kalamazoo, MI 49008-5413, USA
| | - Kathryn M Docherty
- Department of Biological Sciences, Western Michigan University, Kalamazoo, MI 49008-5410, USA
| | - Blair R Szymczyna
- Department of Chemistry, Western Michigan University, Kalamazoo, MI 49008-5413, USA.
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53
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Attri P, Kim M, Choi EH, Cho AE, Koga K, Shiratani M. Impact of an ionic liquid on protein thermodynamics in the presence of cold atmospheric plasma and gamma rays. Phys Chem Chem Phys 2017; 19:25277-25288. [DOI: 10.1039/c7cp04083k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
TEMS IL can protect proteins against the reactive species generated by gamma rays and plasma.
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Affiliation(s)
- Pankaj Attri
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics
- Kwangwoon University
- Seoul 01897
- Korea
- Faculty of Information Science and Electrical Engineering
| | - Minsup Kim
- Department of Bioinformatics
- Korea University
- Sejong 02841
- Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics
- Kwangwoon University
- Seoul 01897
- Korea
| | - Art E. Cho
- Department of Bioinformatics
- Korea University
- Sejong 02841
- Korea
| | - Kazunori Koga
- Faculty of Information Science and Electrical Engineering
- Kyushu University
- Fukuoka
- Japan
| | - Masaharu Shiratani
- Faculty of Information Science and Electrical Engineering
- Kyushu University
- Fukuoka
- Japan
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54
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Yu C, Simmons BA, Singer SW, Thelen MP, VanderGheynst JS. Ionic liquid-tolerant microorganisms and microbial communities for lignocellulose conversion to bioproducts. Appl Microbiol Biotechnol 2016; 100:10237-10249. [PMID: 27838839 DOI: 10.1007/s00253-016-7955-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 11/26/2022]
Abstract
Chemical and physical pretreatment of biomass is a critical step in the conversion of lignocellulose to biofuels and bioproducts. Ionic liquid (IL) pretreatment has attracted significant attention due to the unique ability of certain ILs to solubilize some or all components of the plant cell wall. However, these ILs inhibit not only the enzyme activities but also the growth and productivity of microorganisms used in downstream hydrolysis and fermentation processes. While pretreated biomass can be washed to remove residual IL and reduce inhibition, extensive washing is costly and not feasible in large-scale processes. IL-tolerant microorganisms and microbial communities have been discovered from environmental samples and studies begun to elucidate mechanisms of IL tolerance. The discovery of IL tolerance in environmental microbial communities and individual microbes has lead to the proposal of molecular mechanisms of resistance. In this article, we review recent progress on discovering IL-tolerant microorganisms, identifying metabolic pathways and mechanisms of tolerance, and engineering microorganisms for IL tolerance. Research in these areas will yield new approaches to overcome inhibition in lignocellulosic biomass bioconversion processes and increase opportunities for the use of ILs in biomass pretreatment.
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Affiliation(s)
- Chaowei Yu
- Department of Biological and Agricultural Engineering, University of California, One Shields Ave., Davis, CA, 95616, USA
| | - Blake A Simmons
- Joint BioEnergy Institute, Emeryville, CA, 94608, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Steven W Singer
- Joint BioEnergy Institute, Emeryville, CA, 94608, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Michael P Thelen
- Joint BioEnergy Institute, Emeryville, CA, 94608, USA
- Biosciences Division, Lawrence Livermore National Laboratory, Livermore, CA, 94551, USA
| | - Jean S VanderGheynst
- Department of Biological and Agricultural Engineering, University of California, One Shields Ave., Davis, CA, 95616, USA.
- Joint BioEnergy Institute, Emeryville, CA, 94608, USA.
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55
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Sandig B, Buchmeiser MR. Highly Productive and Enantioselective Enzyme Catalysis under Continuous Supported Liquid-Liquid Conditions Using a Hybrid Monolithic Bioreactor. CHEMSUSCHEM 2016; 9:2917-2921. [PMID: 27650312 DOI: 10.1002/cssc.201600994] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 07/29/2016] [Indexed: 06/06/2023]
Abstract
Enzyme-containing ionic liquids (ILs) were immobilized in cellulose-2.5-acetate microbeads particles embedded in a porous monolithic polyurethane matrix. This bioreactor was used under continuous liquid-liquid conditions by dissolving the substrates in a nonpolar organic phase immiscible with the ILs, thereby creating a biphasic system. Lipases (candida antarctica lipase B, CALB, candida rugosa lipase, CRL) were used to catalyze the enantioselective transesterification of racemic (R,S)-1-phenylethanol with vinyl butyrate and vinyl acetate, the esterification of (+/-)-2-isopropyl-5-methylcyclohexanol with propionic anhydride and the amidation of (R,S)-1-phenylethylamine with ethyl methoxyacetate. With this unique setup, very high productivities, that is, turnover numbers (TONs) up to 5.1×106 and space-time yields (STYs) up to 28 g product L-1 h-1 , exceeding the corresponding values for batch-type reactions by a factor of 3100 and 40, respectively, were achieved while maintaining or even enhancing enantioselectivity compared to batch reactions via kinetic resolution. To our best knowledge, this is the first continuously operated bioreactor using supported liquid-liquid conditions that shows these features in the synthesis of chiral esters and amides.
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Affiliation(s)
- Bernhard Sandig
- Institut für Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Michael R Buchmeiser
- Institut für Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
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56
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Verma A, Jain R. (1-Butyl-3-methylimidazolium Hexafluorophosphate) Based Sensor for Quantification of Eugenol Antioxidant. ELECTROANAL 2016. [DOI: 10.1002/elan.201600228] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alka Verma
- School of Studies in Chemistry; Jiwaji University; Gwalior (M.P.) - 474011 India
| | - Rajeev Jain
- School of Studies in Chemistry; Jiwaji University; Gwalior (M.P.) - 474011 India
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57
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Taha M, Coutinho JA. Organic-phase biological buffers for biochemical and biological research in organic media. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.05.052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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58
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Abdelhamid HN. Ionic liquids for mass spectrometry: Matrices, separation and microextraction. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.12.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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59
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Yu Y, Wang J, Shao Q, Shi J, Zhu W. The effects of organic solvents on the folding pathway and associated thermodynamics of proteins: a microscopic view. Sci Rep 2016; 6:19500. [PMID: 26775871 PMCID: PMC4726029 DOI: 10.1038/srep19500] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 12/14/2015] [Indexed: 11/17/2022] Open
Abstract
Protein folding is subject to the effects of solvation environment. A variety of organic solvents are used as additives for in vitro refolding of denatured proteins. Examination of the solvent effects on protein folding could be of fundamental importance to understand the molecular interactions in determining protein structure. This article investigated the folding of α-helix and β-hairpin structures in water and the solutions of two representative refolding additives (methanol (MeOH) and 1-Ethyl-3-methylimidazolium chloride (EMIM-Cl) ionic liquid) using REMD simulations. For both α-helix and β-hairpin in MeOH/water solution or α-helix in EMIM-Cl/water solution, the transient structures along the folding pathway are consistent with the counterparts in water but the relative statistical weights are changed, leading to the decrease in the overall folding free energy barrier. Accordingly, MeOH promotes the folding of both α-helix and β-hairpin but EMIM-Cl ionic liquid only promotes the folding of α-helix, consistent with experimental observations. The present study reveals for the first time the trivial effects on folding route but significant effects on folding thermodynamics from MeOH and EMIM-Cl, explaining the function of protein refolding additives and testifying the validity of the folding mechanism revealed by in vitro protein folding study using refolding additives.
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Affiliation(s)
- Yuqi Yu
- Drug Discovery and Design Center, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Jinan Wang
- Drug Discovery and Design Center, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Qiang Shao
- Drug Discovery and Design Center, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
| | - Jiye Shi
- UCB Biopharma SPRL, Chemin du Foriest, Braine-l'Alleud, Belgium
| | - Weiliang Zhu
- Drug Discovery and Design Center, CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai, 201203, China
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60
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Zhao H. Protein Stabilization and Enzyme Activation in Ionic Liquids: Specific Ion Effects. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (OXFORD, OXFORDSHIRE : 1986) 2016; 91:25-50. [PMID: 26949281 PMCID: PMC4777319 DOI: 10.1002/jctb.4837] [Citation(s) in RCA: 192] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 10/12/2015] [Indexed: 05/08/2023]
Abstract
There are still debates on whether the hydration of ions perturbs the water structure, and what is the degree of such disturbance; therefore, the origin of Hofmeister effect on protein stabilization continues being questioned. For this reason, it is suggested to use the 'specific ion effect' instead of other misleading terms such as Hofmeister effect, Hofmeister series, lyotropic effect, and lyotropic series. In this review, we firstly discuss the controversial aspect of inorganic ion effects on water structures, and several possible contributors to the specific ion effect of protein stability. Due to recent overwhelming attraction of ionic liquids (ILs) as benign solvents in many enzymatic reactions, we further evaluate the structural properties and molecular-level interactions in neat ILs and their aqueous solutions. Next, we systematically compare the specific ion effects of ILs on enzyme stability and activity, and conclude that (a) the specificity of many enzymatic systems in diluted aqueous IL solutions is roughly in line with the traditional Hofmeister series albeit some exceptions; (b) however, the specificity follows a different track in concentrated or neat ILs because other factors (such as hydrogen-bond basicity, nucelophilicity, and hydrophobicity, etc) are playing leading roles. In addition, we demonstrate some examples of biocatalytic reactions in IL systems that are guided by the empirical specificity rule.
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Affiliation(s)
- Hua Zhao
- Department of Chemistry and Forensic Science, Savannah State University, Savannah, GA 31404, USA
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61
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Qin J, Zou X, Lv S, Jin Q, Wang X. Influence of ionic liquids on lipase activity and stability in alcoholysis reactions. RSC Adv 2016. [DOI: 10.1039/c6ra19181a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Lipase activity and stability in ionic liquids containing N,N-dialkylimidazolium cations and different anions were investigated in alcoholysis reactions.
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Affiliation(s)
- Jie Qin
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
| | - Xiaoqiang Zou
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
| | - Songtai Lv
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
| | - Qingzhe Jin
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
| | - Xingguo Wang
- State Key Laboratory of Food Science and Technology
- Synergetic Innovation Center of Food Safety and Nutrition
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province
- School of Food Science and Technology
- Jiangnan University
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62
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Esterification of potato starch by a biocatalysed reaction in an ionic liquid. Carbohydr Polym 2015; 137:657-663. [PMID: 26686176 DOI: 10.1016/j.carbpol.2015.11.029] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 11/06/2015] [Accepted: 11/07/2015] [Indexed: 11/21/2022]
Abstract
In this study, potato starch was esterified with oleic acid, using 1-butyl-3-methylimidazolium chloride as a reaction medium and an immobilised lipase from Thermomyces lanuginosus as a catalyst. The degree of substitution (DS) of the products was determined by the volumetric method; and the best esterified product (with the highest DS) was determined by an elemental analysis. The effect of the reaction parameters on the DS, such as the time and the temperature, were also studied. The product with the highest DS (0.22) was found in the reaction carried out at 60 °C for 4h. Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) analyses confirmed the esterification of the potato starch. Furthermore, the results of X-ray diffraction (XRD) and a scanning electron microscopy (SEM) revealed that the crystallinity and the morphology of the native potato starch was slightly changed during its partial gelatinisation in the ionic liquid, and was completely destroyed as a result of the formation of the esters. The thermal stability of the starch oleate decreased, when compared to the unmodified starch, as was indicated by a thermal gravimetric analysis (TGA).
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63
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Urease immobilized polymer hydrogel: Long-term stability and enhancement of enzymatic activity. J Colloid Interface Sci 2015; 463:164-72. [PMID: 26520823 DOI: 10.1016/j.jcis.2015.10.051] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 10/17/2015] [Accepted: 10/20/2015] [Indexed: 11/24/2022]
Abstract
A method has been developed in which an enzyme namely urease was immobilized inside hydrogel matrix to study the stability and enzymatic activity in room temperature (∼27-30°C). This urease coupled hydrogel (UCG) was obtained by amine-acid coupling reaction and this procedure is such that it ensured the wider opening of mobile flap of enzyme active site. A systematic comparison of urea-urease assay and the detailed kinetic data clearly revealed that the urease shows activity for more than a month when stored at ∼27-30°C in case of UCG whereas it becomes inactive in case of free urease (enzyme in buffer solution). The aqueous microenvironment inside the hydrogel, unusual morphological features and thermal behaviour were believed to be the reasons for unexpected behaviour. UCG displayed enzyme activity at basic pH and up to 60°C. UCG showed significant enhancement in activity against thermal degradation compared to free urease. In summary, this method is a suitable process to stabilize the biomacromolecules in standard room temperature for many practical uses.
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64
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Wu J, Zhu X, Li H, Su L, Yang K, Cheng X, Yang G, Liu J. Combined Raman Scattering and X-ray Diffraction Study of Phase Transition of the Ionic Liquid [BMIM][TFSI] Under High Pressure. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0393-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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65
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Li X, Ma J, Wang J. Cytotoxicity, oxidative stress, and apoptosis in HepG2 cells induced by ionic liquid 1-methyl-3-octylimidazolium bromide. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 120:342-348. [PMID: 26099465 DOI: 10.1016/j.ecoenv.2015.06.018] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 06/09/2015] [Accepted: 06/10/2015] [Indexed: 06/04/2023]
Abstract
The present study aimed to determine the cytotoxicity of 1-methyl-3-octylimidazolium bromide ([C8mim]Br) on the human hepatocellular carcinoma (HepG2) cells in order to elucidate the biochemical and molecular mechanism of [C8mim]Br-cytotoxicity. For this purpose, cell viability, oxidative stress, apoptosis, caspase activity, and apoptosis-related gene expression in HepG2 cells following [C8mim]Br-exposure were evaluated. The results showed that viability of HepG2 cells was decreased by [C8mim]Br-exposure in a concentration-dependent pattern. Moreover, biochemical assays reveal that [C8mim]Br-exposure can induce apoptosis, cause overproduction of reactive oxygen species (ROS), inhibit superoxide dismutase and catalase, reduce glutathione content, and increase the cellular malondialdehyde level of HepG2 cells. The transcriptions of p53 and bax were markedly up-regulated while bcl-2 was significantly down-regulated in HepG2 cells after [C8mim]Br-exposure, suggesting that p53 and bcl-2 family may be involved in the cytotoxicity and apoptosis of HepG2 cells caused by [C8mim]Br. In addition, we also found that caspase-3, caspase-8, and caspase-9 were significantly activated in HepG2 cells following [C8mim]Br-exposure. Our results suggest that ROS may be a key early signal of [C8mim]Br-induced apoptosis and caspases play a key role in the initiation and execution of apoptosis of HepG2 cells.
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Affiliation(s)
- Xiaoyu Li
- College of Life Science, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Junguo Ma
- College of Life Science, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jianji Wang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
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66
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Sandig B, Michalek L, Vlahovic S, Antonovici M, Hauer B, Buchmeiser MR. A Monolithic Hybrid Cellulose-2.5-Acetate/Polymer Bioreactor for Biocatalysis under Continuous Liquid-Liquid Conditions Using a Supported Ionic Liquid Phase. Chemistry 2015; 21:15835-42. [DOI: 10.1002/chem.201501618] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Indexed: 11/06/2022]
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67
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Abstract
Ionic liquids (ILs) are entirely composed of ions and they possess fascinating properties, including low volatility, tunable viscosity, miscibility and electrolytic conductivity, which make them promising alternatives to traditional organic solvents used in sample preparation. The recent surge in the number of publications clearly indicates an increasing interest of the analytical and bioanalytical community toward these exciting and unique solvents. This article highlights the recent advances in the use of ILs as extraction solvents, as materials for separation and preconcentration in chromatographic techniques, and as matrices in mass spectrometric techniques for bioassays in biocomplex samples. We also briefly discuss the potential applications of ILs in biocatalysis.
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68
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Experimental and theoretical study of carbohydrate–ionic liquid interactions. Carbohydr Polym 2015; 127:316-24. [DOI: 10.1016/j.carbpol.2015.03.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 02/27/2015] [Accepted: 03/09/2015] [Indexed: 11/18/2022]
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69
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Roccatano D. Structure, dynamics, and function of the monooxygenase P450 BM-3: insights from computer simulations studies. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:273102. [PMID: 26061496 DOI: 10.1088/0953-8984/27/27/273102] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The monooxygenase P450 BM-3 is a NADPH-dependent fatty acid hydroxylase enzyme isolated from soil bacterium Bacillus megaterium. As a pivotal member of cytochrome P450 superfamily, it has been intensely studied for the comprehension of structure-dynamics-function relationships in this class of enzymes. In addition, due to its peculiar properties, it is also a promising enzyme for biochemical and biomedical applications. However, despite the efforts, the full understanding of the enzyme structure and dynamics is not yet achieved. Computational studies, particularly molecular dynamics (MD) simulations, have importantly contributed to this endeavor by providing new insights at an atomic level regarding the correlations between structure, dynamics, and function of the protein. This topical review summarizes computational studies based on MD simulations of the cytochrome P450 BM-3 and gives an outlook on future directions.
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Affiliation(s)
- Danilo Roccatano
- School of Engineering and Science, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
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70
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Efficient biosynthesis of γ-decalactone in ionic liquids by immobilized whole cells of Yarrowia lipolytica G3-3.21 on attapulgite. Bioprocess Biosyst Eng 2015; 38:2045-52. [PMID: 26091898 DOI: 10.1007/s00449-015-1431-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 06/14/2015] [Indexed: 10/23/2022]
Abstract
In this study, the biosynthesis of γ-decalactone (GDL) was successfully conducted in an ionic liquid (IL)-containing cosolvent system using immobilized cells of Yarrowia lipolytica G3-3.21 on attapulgite (ATG). We found the immobilized Y. lipolytica G3-3.21 cells in N-butyl-pyridinium tetrafluoroborate ([BPy]BF4) solution gave the highest activity of C16-Acyl-CoA oxidase and the maximum yield of GDL. The optimum immobilization conditions for the highest yield of GDL were 20 g/L of ATG, 1.5 % of CaCl2 and 2 % of sodium alginate (NaAlg). The optimal [BPy]BF4 content, buffer pH, reaction temperature, shaking speed, castor oil and glucose contents were 7.5 %, 26 °C, 150 rpm, 100 g/L and 10 %, respectively. Under the optimized conditions, the GDL yield was up to 8.05 g/L. After ten times of reuse, the GDL yield was 7.51 g/L, corresponding to 93.3 % of that obtained in the first batch, suggesting a good reusability and potential for industrial applications.
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71
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Effect of the physicochemical properties of binary ionic liquids on lipase activity and stability. Int J Biol Macromol 2015; 77:243-9. [DOI: 10.1016/j.ijbiomac.2015.03.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/07/2015] [Accepted: 03/13/2015] [Indexed: 11/23/2022]
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72
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Gębicki J, Kloskowski A, Chrzanowski W, Stepnowski P, Namiesnik J. Application of Ionic Liquids in Amperometric Gas Sensors. Crit Rev Anal Chem 2015; 46:122-38. [DOI: 10.1080/10408347.2014.989957] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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73
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Lee SY, Khoiroh I, Ling TC, Show PL. Aqueous Two-Phase Flotation for the Recovery of Biomolecules. SEPARATION AND PURIFICATION REVIEWS 2015. [DOI: 10.1080/15422119.2015.1007147] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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74
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Sun S, Hu B, Song F, Bi Y. Ionic liquids improve the selective synthesis of hydrophilic glyceryl ferulates by the enzymatic transesterification of ethyl ferulate with monostearin: Comparison with organic solvents. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201400335] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shangde Sun
- Lipid Technology and Engineering; School of Food Science and Engineering; Henan University of Technology; Zhengzhou Henan Province P. R. China
| | - Bingxue Hu
- Lipid Technology and Engineering; School of Food Science and Engineering; Henan University of Technology; Zhengzhou Henan Province P. R. China
| | - Fanfan Song
- Lipid Technology and Engineering; School of Food Science and Engineering; Henan University of Technology; Zhengzhou Henan Province P. R. China
| | - Yanlan Bi
- Lipid Technology and Engineering; School of Food Science and Engineering; Henan University of Technology; Zhengzhou Henan Province P. R. China
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75
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Hernández Fernández FJ, Pérez de los Ríos A, Quesada-Medina J, Sánchez-Segado S. Ionic Liquids as Extractor Agents and Reaction Media in Ester Synthesis. CHEMBIOENG REVIEWS 2015. [DOI: 10.1002/cben.201400019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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76
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Gupta BS, Taha M, Lee MJ. Self-buffering and biocompatible ionic liquid based biological media for enzymatic research. RSC Adv 2015. [DOI: 10.1039/c5ra16317j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
New self-buffering Good's buffer ionic liquids (GBILs) were synthesized for biological research.
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Affiliation(s)
- Bhupender S. Gupta
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106-07
- Taiwan
| | - Mohamed Taha
- Departamento de Química
- CICECO
- Universidade de Aveiro
- 3810-193 Aveiro
- Portugal
| | - Ming-Jer Lee
- Department of Chemical Engineering
- National Taiwan University of Science and Technology
- Taipei 106-07
- Taiwan
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77
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Rueda N, dos Santos JCS, Torres R, Ortiz C, Barbosa O, Fernandez-Lafuente R. Improved performance of lipases immobilized on heterofunctional octyl-glyoxyl agarose beads. RSC Adv 2015. [DOI: 10.1039/c4ra13338b] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A new heterofunctional support, octyl-glyoxyl agarose, is proposed in this study.
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Affiliation(s)
- Nazzoly Rueda
- Departamento de Biocatálisis. Instituto de Catálisis-CSIC
- Campus UAM-CSIC Madrid
- Spain
- Escuela de Química
- Grupo de Investigación en Bioquímica y Microbiología (GIBIM)
| | - Jose C. S. dos Santos
- Departamento de Biocatálisis. Instituto de Catálisis-CSIC
- Campus UAM-CSIC Madrid
- Spain
- Departamento de Engenharia Química
- Universidade Federal Do Ceará
| | - Rodrigo Torres
- Escuela de Química
- Grupo de Investigación en Bioquímica y Microbiología (GIBIM)
- Universidad Industrial de Santander
- Bucaramanga
- Colombia
| | - Claudia Ortiz
- Escuela de Bacteriología y Laboratorio Clínico
- Universidad Industrial de Santander
- Bucaramanga
- Colombia
| | - Oveimar Barbosa
- Departamento de Química
- Facultad de Ciencias. Universidad del Tolima
- Ibagué
- Colombia
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78
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Reddy PM, Umapathi R, Venkatesu P. A green approach to offset the perturbation action of 1-butyl-3-methylimidazolium iodide on α-chymotrypsin. Phys Chem Chem Phys 2015; 17:184-90. [DOI: 10.1039/c4cp04180a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The presence of [Bmim][Br] counteracts the strong denaturation action of [Bmim][I].
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Affiliation(s)
| | - R. Umapathi
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - P. Venkatesu
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
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79
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Jha I, Venkatesu P. Endeavour to simplify the frustrated concept of protein-ammonium family ionic liquid interactions. Phys Chem Chem Phys 2015; 17:20466-84. [DOI: 10.1039/c5cp01735a] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Schematic representation of protein stabilization/destabilization in the presence of ionic liquids.
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Affiliation(s)
- Indrani Jha
- Department of Chemistry
- University of Delhi
- Delhi – 110007
- India
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80
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Piotrowska U, Sobczak M. Enzymatic polymerization of cyclic monomers in ionic liquids as a prospective synthesis method for polyesters used in drug delivery systems. Molecules 2014; 20:1-23. [PMID: 25546617 PMCID: PMC6272625 DOI: 10.3390/molecules20010001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 12/16/2014] [Indexed: 11/19/2022] Open
Abstract
Biodegradable or bioresorbable polymers are commonly used in various pharmaceutical fields (e.g., as drug delivery systems, therapeutic systems or macromolecular drug conjugates). Polyesters are an important class of polymers widely utilized in pharmacy due to their biodegradability and biocompatibility features. In recent years, there has been increased interest in enzyme-catalyzed ring-opening polymerization (e-ROP) of cyclic esters as an alternative method of preparation of biodegradable or bioresorbable polymers. Ionic liquids (ILs) have been presented as green solvents in enzymatic ring-opening polymerization. The activity, stability, selectivity of enzymes in ILs and the ability to catalyze polyester synthesis under these conditions are discussed. Overall, the review demonstrates that e-ROP of lactones or lactides could be an effective method for the synthesis of useful biomedical polymers.
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Affiliation(s)
- Urszula Piotrowska
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, Warsaw 02-097, Poland.
| | - Marcin Sobczak
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1, Warsaw 02-097, Poland.
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81
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Kandar S, Suresh AK, Noronha SB. (R)-PAC biosynthesis in [BMIM][PF₆]/aqueous biphasic system using Saccharomyces cerevisiae BY4741 cells. Appl Biochem Biotechnol 2014; 175:1771-88. [PMID: 25424285 DOI: 10.1007/s12010-014-1394-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 11/12/2014] [Indexed: 11/28/2022]
Abstract
(R)-phenylacetylcarbinol or (R)-PAC is a pharmaceutical precursor of (1R, 2S) ephedrine and (1S, 2S) pseudoephedrine. Biotransformation of benzaldehyde and glucose by pyruvate decarboxylase produces (R)-PAC. This biotransformation suffers from toxicity of the substrate, product [(R)-PAC] and by-product (benzyl alcohol). In the present study, ionic liquid/aqueous biphasic system was employed to enhance (R)-PAC production. Fermented broth was the reaction medium in which Saccharomyces cerevisiae BY4741 was the source of pyruvate decarboxylase. Hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) was the non-aqueous phase in which toxic compounds reside. Biocompatibility of [BMIM][PF6] and adequate distribution coefficients of benzaldehyde, (R)-PAC and benzyl alcohol were determined. A Box-Behnken design and response surface methodology were used for the optimization of biotransformation variables in order to maximize (R)-PAC yield and productivity. The results showed higher (R)-PAC yield and productivity of ∼1.5-fold each in the biphasic biotransformation of phase volume ratio 0.05 as compared to the monophasic (conventional) biotransformation. Moreover, the level of major by-product benzyl alcohol was also 3.5-fold lower in biphasic biotransformation. [BMIM][PF6]/aqueous biphasic system is a new approach which could intensify the (R)-PAC production.
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Affiliation(s)
- Smita Kandar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India,
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82
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Yang M, Wu H, Lian Y, Li X, Ren Y, Lai F, Zhao G. Using ionic liquids in whole-cell biocatalysis for the nucleoside acylation. Microb Cell Fact 2014; 13:143. [PMID: 25273324 PMCID: PMC4198771 DOI: 10.1186/s12934-014-0143-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 09/23/2014] [Indexed: 11/30/2022] Open
Abstract
Background The use of biocatalysts has become an increasingly attractive alternative to traditional chemical methods, due to the high selectivity, mild reaction conditions and environmentally-friendly processes in nonaqueous catalysis of nucleosids. However, the extensive use of organic solvents may generally suffer from sever drawbacks such as volatileness and toxicity to the environment and lower activity of the biocatalyst. Recently, ionic liquids are considered promising solvents for nonaqueous biocatalysis of polyhydroxyl compounds as ILs are environmental-friendly. Results In this research, we developed new IL-containing reaction systems for synthesis of long chain nucleoside ester catalyzed by Pseudomonas fluorescens whole-cells. Various ILs exerted significant but different effects on the bio-reaction. And their effects were closely related with both the anions and cations of the ILs. Use of 10% [BMI][PF6]/THF gave high reaction efficiency of arabinocytosine laurate synthesis, in which the initial rate, product yield and 5′-regioselectivity reached 2.34 mmol/L·h, 81.1% and >99%, respectively. Furthermore, SEM analysis revealed that ILs can alter the cell surface morphology, improve the permeability of cell envelopes and thus facilitate the mass transfer of substrates to the active sites of cell-bound enzymes. Conclusion Our research demonstrated the potential of ILs as promising reaction medium for achieving highly efficient and regioselective whole-cell catalysis.
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Affiliation(s)
- Meiyan Yang
- State Key lab of Pulp & Paper making Engineering, South China University of Technology, Guangzhou, 510641, China. .,College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
| | - Hui Wu
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
| | - Yan Lian
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
| | - Xiaofeng Li
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
| | - Yao Ren
- State Key lab of Pulp & Paper making Engineering, South China University of Technology, Guangzhou, 510641, China. .,College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
| | - Furao Lai
- College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
| | - Guanglei Zhao
- State Key lab of Pulp & Paper making Engineering, South China University of Technology, Guangzhou, 510641, China. .,College of Light Industry and Food Sciences, South China University of Technology, Guangzhou, 510641, China.
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83
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Gao P, Li A, Lee HH, Wang DIC, Li Z. Enhancing Enantioselectivity and Productivity of P450-Catalyzed Asymmetric Sulfoxidation with an Aqueous/Ionic Liquid Biphasic System. ACS Catal 2014. [DOI: 10.1021/cs5010344] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Pengfei Gao
- Department
of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, Singapore 117585
- Singapore−MIT
Alliance, National University of Singapore, 4 Engineering Drive 3, Singapore, Singapore 117583
| | - Aitao Li
- Department
of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, Singapore 117585
| | - Heng Hiang Lee
- Department
of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, Singapore 117585
| | - Daniel I. C. Wang
- Singapore−MIT
Alliance, National University of Singapore, 4 Engineering Drive 3, Singapore, Singapore 117583
- Department
of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Zhi Li
- Department
of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, Singapore 117585
- Singapore−MIT
Alliance, National University of Singapore, 4 Engineering Drive 3, Singapore, Singapore 117583
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84
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Chen G, Ye M, Qiao H, Qiu X. The synthesis of an aryl alkyl ionic liquid and its application in catalyzing Suzuki-Miyaura coupling reaction. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2014. [DOI: 10.1134/s0036024414080111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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85
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Fan LL, Li HJ, Chen QH. Applications and mechanisms of ionic liquids in whole-cell biotransformation. Int J Mol Sci 2014; 15:12196-216. [PMID: 25007820 PMCID: PMC4139838 DOI: 10.3390/ijms150712196] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 06/13/2014] [Accepted: 07/01/2014] [Indexed: 01/08/2023] Open
Abstract
Ionic liquids (ILs), entirely composed of cations and anions, are liquid solvents at room temperature. They are interesting due to their low vapor pressure, high polarity and thermostability, and also for the possibility to fine-tune their physicochemical properties through modification of the chemical structures of their cations or anions. In recent years, ILs have been widely used in biotechnological fields involving whole-cell biotransformations of biodiesel or biomass, and organic compound synthesis with cells. Research studies in these fields have increased from the past decades and compared to the typical solvents, ILs are the most promising alternative solvents for cell biotransformations. However, there are increasing limitations and new challenges in whole-cell biotransformations with ILs. There is little understanding of the mechanisms of ILs' interactions with cells, and much remains to be clarified. Further investigations are required to overcome the drawbacks of their applications and to broaden their application spectrum. This work mainly reviews the applications of ILs in whole-cell biotransformations, and the possible mechanisms of ILs in microbial cell biotransformation are proposed and discussed.
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Affiliation(s)
- Lin-Lin Fan
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China.
| | - Hong-Ji Li
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China.
| | - Qi-He Chen
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China.
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86
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Yan K, Sun Y, Huang X. Effect of the alkyl chain length of a hydrophobic ionic liquid (IL) as an oil phase on the phase behavior and the microstructure of H2O/IL/nonionic polyoxyethylene surfactant ternary systems. RSC Adv 2014. [DOI: 10.1039/c4ra04392h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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87
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Lin Y, Ren J, Qu X. Nano-gold as artificial enzymes: hidden talents. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4200-17. [PMID: 24692212 DOI: 10.1002/adma.201400238] [Citation(s) in RCA: 302] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/18/2014] [Indexed: 05/18/2023]
Abstract
Creating artificial enzymes that mimic the complexity and function of natural systems has been a great challenge for the past two decades. In this Progress Report, the focus is on recently discovered "hidden talents" of gold nanomaterials in artificial enzymes, including mimicking of nuclease, esterase, silicatein, glucose oxidase, peroxidase, catalase, and superoxide dismutase. These unexpected enzyme-like activities can be ascribed to nano-gold itself or the functional groups present on surrounding monolayer. Along with introducing the mechanisms of the various enzyme-like activities, the design and development of gold-based biomimetic catalysts, the search for efficient modulators, and their potential applications in bionics, biosensing, and biomedical sciences are highlighted. Eventually, it is expected that the rapidly growing interest in gold-based nanozymes will certainly fuel the excitement and stimulate research in this highly active field.
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Affiliation(s)
- Youhui Lin
- Laboratory of Chemical Biology, Division of Biological Inorganic Chemistry, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
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88
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Li XY, Dong XY, Bai X, Liu L, Wang JJ. The embryonic and postembryonic developmental toxicity of imidazolium-based ionic liquids on Physa acuta. ENVIRONMENTAL TOXICOLOGY 2014; 29:697-704. [PMID: 22847984 DOI: 10.1002/tox.21797] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Revised: 06/23/2012] [Accepted: 06/30/2012] [Indexed: 06/01/2023]
Abstract
The embryonic and postembryonic developmental toxicity of imidazolium-based ionic liquids (ILs) to the snail Physa acuta was evaluated in this study. The results of embryonic toxicity tests showed that lower concentrations of 1-octyl-3-methylimidazolium bromide ([C8 mim]Br) (1.5 and 2.1 mg/L) inhibited the hatching rate of snail embryos, and partial snails hatched normally and died, while all of the treated embryos died when the exposure concentration was higher than 4.16 mg/L, at which IL caused the deformation, death, and decay of snail embryos. Statistical analyses revealed obvious differences in the hatching rates between three developmental stages in the 2.1 and 2.94 mg/L groups, indicating that the veliger stage is more sensitive to [C8 mim]Br exposure than the blastula and gastrula stages. Furthermore, the 96 h LC50 values of [C8 mim]Br on the tested snails at three developmental stages (juvenile, subadult, and adult) were 70.83 ± 2.99, 97.59 ± 4.05, and 109.3 ± 2.22 mg/L, respectively, indicating that young snails were more sensitive to [C8 mim]Br toxicity than adults. In addition, the 96 h LC50 values of ILs with different alkyl chain lengths, that is, [C12 mim], [C10 mim], [C8 mim], and [C6 mim], in adult snails were 1.35 ± 0.24, 8.96 ± 5.66, 109.3 ± 4, and 359.6 ± 11.6 mg/L, respectively, suggesting that longer alkyl chains can increase the toxicity of imidazolium ILs on snails.
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Affiliation(s)
- Xiao-Yu Li
- College of Life Science, Henan Normal University, Xinxiang, Henan 453007, China
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89
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Richardt A, Mrestani-Klaus C, Bordusa F. Impact of ionic liquids on the structure of peptides proved by HR-MAS NMR spectroscopy. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.12.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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90
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Recent Advances in the Applications of Ionic Liquids in Protein Stability and Activity: A Review. Appl Biochem Biotechnol 2014; 172:3701-20. [DOI: 10.1007/s12010-014-0813-6] [Citation(s) in RCA: 183] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 02/14/2014] [Indexed: 01/28/2023]
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91
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92
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Hu YL, Fang D, Xing R. Efficient and convenient oxidation of sulfides to sulfoxides with molecular oxygen catalyzed by Mn(OAc)2 in ionic liquid [C12mim][NO3]. RSC Adv 2014. [DOI: 10.1039/c4ra06695b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A simple, efficient, and eco-friendly procedure for aerobic oxidation of sulfides catalyzed by Mn(OAc)2/[C12mim][NO3] has been developed.
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Affiliation(s)
- Yu-Lin Hu
- College of Chemistry and Chemical Engineering
- Yancheng Teachers University
- Yancheng 224002, P. R. China
| | - Dong Fang
- College of Chemistry and Chemical Engineering
- Yancheng Teachers University
- Yancheng 224002, P. R. China
| | - Rong Xing
- College of Chemistry and Chemical Engineering
- Yancheng Teachers University
- Yancheng 224002, P. R. China
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93
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94
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Hu YL, Liu XB, Fang D. Efficient and convenient oxidation of sulfides to sulfones using H2O2catalyzed by V2O5in ionic liquid [C12mim][HSO4]. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00719g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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95
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Tietze AA, Bordusa F, Giernoth R, Imhof D, Lenzer T, Maaß A, Mrestani-Klaus C, Neundorf I, Oum K, Reith D, Stark A. On the Nature of Interactions between Ionic Liquids and Small Amino-Acid-Based Biomolecules. Chemphyschem 2013; 14:4044-64. [DOI: 10.1002/cphc.201300736] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 09/03/2013] [Indexed: 01/18/2023]
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96
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Ma J, Dong X, Fang Q, Li X, Wang J. Toxicity of Imidazolium-Based Ionic Liquids onPhysa Acutaand the Snail Antioxidant Stress Response. J Biochem Mol Toxicol 2013; 28:69-75. [DOI: 10.1002/jbt.21537] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 10/12/2013] [Accepted: 10/16/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Junguo Ma
- College of Life Science; Henan Normal University; Xinxiang Henan Province People's Republic of China
| | - Xiangyi Dong
- College of Life Science; Henan Normal University; Xinxiang Henan Province People's Republic of China
| | - Qian Fang
- College of Life Science; Henan Normal University; Xinxiang Henan Province People's Republic of China
| | - Xiaoyu Li
- College of Life Science; Henan Normal University; Xinxiang Henan Province People's Republic of China
| | - Jianji Wang
- Key Laboratory of Green Chemical Media and Reactions; Ministry of Education, Henan Normal University; Xinxiang Henan Province People's Republic of China
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97
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Kumar A, Venkatesu P. Does the stability of proteins in ionic liquids obey the Hofmeister series? Int J Biol Macromol 2013; 63:244-53. [PMID: 24211268 DOI: 10.1016/j.ijbiomac.2013.10.031] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/23/2013] [Accepted: 10/24/2013] [Indexed: 11/27/2022]
Abstract
Understanding the behavior of Hofmeister anions of ionic liquids (ILs) on protein stability helps to shed light on how the anions interact with proteins in aqueous solution and is a long standing object for chemistry and biochemistry. Ions effects play a major role in understanding the physicochemical and biological phenomenon that undertakes the protein folding/unfolding and refolding process. Despite the generality of these effects, our understanding of ions at the molecular-level is still limited. This review offers a tour through past successful investigations and presents a challenge in current research in the field to reassess the possibilities of ions and to apply new strategies. This review highlights on the stability behavior of the proteins and also comparisons of our past research work in the Hofmeister series of ILs. Furthermore, we specifically focus on the critical discussion on the recent findings with existing results and their implications, along with our understanding of the Hofmeister series of anions of ILs on biomolecular stability. A detailed examination of the difference between selective proteins can provide a better understanding of the molecular mechanism of protein folding/unfolding in the presence of the Hofmeister series of ions of ILs.
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Affiliation(s)
- Awanish Kumar
- Department of Chemistry, University of Delhi, Delhi 110 007, India
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98
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The control of Novozym® 435 chemoselectivity and specificity by the solvents in acylation reactions of amino-alcohols. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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99
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Shao Q. On the influence of hydrated imidazolium-based ionic liquid on protein structure stability: A molecular dynamics simulation study. J Chem Phys 2013; 139:115102. [DOI: 10.1063/1.4821588] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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100
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Machado MF, Queirós RP, Santos MD, Fidalgo LG, Delgadillo I, Saraiva JA. Effect of ionic liquids alkyl chain length on horseradish peroxidase thermal inactivation kinetics and activity recovery after inactivation. World J Microbiol Biotechnol 2013; 30:487-94. [DOI: 10.1007/s11274-013-1466-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 08/16/2013] [Indexed: 10/26/2022]
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