51
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Ajloo D, Sangian M, Ghadamgahi M, Evini M, Saboury AA. Effect of two imidazolium derivatives of ionic liquids on the structure and activity of adenosine deaminase. Int J Biol Macromol 2013; 55:47-61. [DOI: 10.1016/j.ijbiomac.2012.12.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Revised: 12/25/2012] [Accepted: 12/29/2012] [Indexed: 10/27/2022]
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52
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LIU GUILI, ZHONG RUIBO, HU RUISHENG, ZHANG FENG. APPLICATIONS OF IONIC LIQUIDS IN BIOMEDICINE. ACTA ACUST UNITED AC 2013. [DOI: 10.1142/s179304801230006x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
(Ionic liquids) ILs have unique properties compared with conventional solvents, opening a wide range of application as solvents and catalysts. ILs' cytotoxicity extend their application in biomedicine by acting as antimicrobial and anticancer agents. This article reviews the current research advances of ILs' biomedical application from the following four aspects: solvents, catalysts, antimicrobial and anticancer agents. By introducing ILs' interesting structures and their corresponding unique properties, this review concludes the current state-of-art of ILs biomedical applications. We also try to point out the ILs issues and solutions for more potential applications in biomedicine.
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Affiliation(s)
- GUILI LIU
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - RUIBO ZHONG
- Biology School, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - RUISHENG HU
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - FENG ZHANG
- Biology School, Inner Mongolia Agricultural University, Hohhot 010018, China
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53
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Dhake KP, Thakare DD, Bhanage BM. Lipase: A potential biocatalyst for the synthesis of valuable flavour and fragrance ester compounds. FLAVOUR FRAG J 2013. [DOI: 10.1002/ffj.3140] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Kishor P. Dhake
- Department of Chemistry; Institute of Chemical Technology; Matunga; Mumbai; 400 019; India
| | - Dinesh D. Thakare
- Department of Chemistry; Institute of Chemical Technology; Matunga; Mumbai; 400 019; India
| | - Bhalchandra M. Bhanage
- Department of Chemistry; Institute of Chemical Technology; Matunga; Mumbai; 400 019; India
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54
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Zampieri DS, de Paula BR, Zampieri LA, Vale JA, Rodrigues JAR, Moran PJ. Enhancements of enantio and diastereoselectivities in reduction of (Z)-3-halo-4-phenyl-3-buten-2-one mediated by microorganisms in ionic liquid/water biphasic system. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2012.08.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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55
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Enzyme is stabilized by a protection layer of ionic liquids in supercritical CO2: Insights from molecular dynamic simulation. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2012.04.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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56
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Ebrahimi M, Hosseinkhani S, Heydari A, Khavari-Nejad RA, Akbari J. Improvement of Thermostability and Activity of Firefly Luciferase Through [TMG][Ac] Ionic Liquid Mediator. Appl Biochem Biotechnol 2012; 168:604-15. [DOI: 10.1007/s12010-012-9803-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 06/06/2012] [Indexed: 10/28/2022]
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57
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Efficient production of glycyrrhetic acid 3-O-mono-β-d-glucuronide by whole-cell biocatalysis in an ionic liquid/buffer biphasic system. Process Biochem 2012. [DOI: 10.1016/j.procbio.2011.10.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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58
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Xue L, Li Y, Zou F, Lu L, Zhao Y, Huang X, Qu Y. The catalytic efficiency of lipase in a novel water-in-[Bmim][PF6] microemulsion stabilized by both AOT and Triton X-100. Colloids Surf B Biointerfaces 2012; 92:360-6. [DOI: 10.1016/j.colsurfb.2011.12.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 11/19/2011] [Accepted: 12/14/2011] [Indexed: 10/14/2022]
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59
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A novel immunosensor for Enterobacter sakazakii based on multiwalled carbon nanotube/ionic liquid/thionine modified electrode. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2011.11.092] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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60
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Ratzka J, Lauterbach L, Lenz O, Ansorge-Schumacher MB. Stabilisation of the NAD+-reducing soluble [NiFe]-hydrogenase from Ralstonia eutropha H16 through modification with methoxy-poly(ethylene) glycol. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2011.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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61
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Ebrahimi M, Hosseinkhani S, Heydari A, Khavari-Nejad RA, Akbari J. Controversial effect of two methylguanidine-based ionic liquids on firefly luciferase. Photochem Photobiol Sci 2012; 11:828-34. [DOI: 10.1039/c2pp05389f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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62
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Li L, Xie J, Yu S, Su Z, Liu S, Liu F, Xie C, Zhang B. Novel compatible system of [C2OHmim][OAc]-cellulases for the in situ hydrolysis of lignocellulosic biomass. RSC Adv 2012. [DOI: 10.1039/c2ra22128d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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63
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Wong WL, Wong KY. Recent development in functionalized ionic liquids as reaction media and promoters. CAN J CHEM 2012. [DOI: 10.1139/v11-110] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The recent development in the use of functionalized ionic liquids as both reaction media and promoters is reviewed. Ionic liquids designed with special functionality can enhance the reaction rate, selectivity, and productivity in various chemical reactions. In this context, some important chemical reactions involving C–C, C–O, C–N, and C–S bond formation in functionalized ionic liquids are discussed. These functionalized ionic liquids were found to provide distinct advantages over conventional organic solvents in these catalytic reactions.
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Affiliation(s)
- Wing-Leung Wong
- Department of Applied Biology and Chemical Technology and The State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Kwok-Yin Wong
- Department of Applied Biology and Chemical Technology and The State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
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64
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Clouthier CM, Pelletier JN. Expanding the organic toolbox: a guide to integrating biocatalysis in synthesis. Chem Soc Rev 2012; 41:1585-605. [DOI: 10.1039/c2cs15286j] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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65
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Wu DX, Guan YX, Wang HQ, Yao SJ. 11α-Hydroxylation of 16α,17-epoxyprogesterone by Rhizopus nigricans in a biphasic ionic liquid aqueous system. BIORESOURCE TECHNOLOGY 2011; 102:9368-9373. [PMID: 21855322 DOI: 10.1016/j.biortech.2011.07.060] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 07/13/2011] [Accepted: 07/17/2011] [Indexed: 05/31/2023]
Abstract
11α-Hydroxylation of 16α,17-epoxyprogesterone (EP) by Rhizopus nigricans is an essential step in the synthesis of many steroidal drugs, while low conversion of the biohydroxylation is a tough problem to be solved urgently in industry. Two ionic liquids (ILs) of [BMIm][PF(6)] and [BMIm][NTf(2)] were used in the biotransformation of EP by R. nigricans. The results indicated that the conversion carried out in [BMIm][PF(6)]-aqueous biphasic system was greatly increased to above 90% at 18 g/L feeding concentration. A simplified mechanism was proposed to explain the improvement of the bioconversion in a biphasic ionic liquid aqueous system. Besides, successive three batches of bioconversion were carried out in the biphasic system with a total conversion of 87% at phase ratio 10 and 75% at phase ratio 5, respectively. Since recycling of the [BMIm][PF(6)] is quite easy, there is a great potential for the application of ILs in fungi biotransformation to implement green production.
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Affiliation(s)
- Dong-Xiang Wu
- Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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66
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Ha SH, Anh TV, Lee SH, Koo YM. Effect of ionic liquids on enzymatic synthesis of caffeic acid phenethyl ester. Bioprocess Biosyst Eng 2011; 35:235-40. [PMID: 21909673 DOI: 10.1007/s00449-011-0601-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Accepted: 07/17/2011] [Indexed: 12/12/2022]
Abstract
Although caffeic acid phenethyl ester (CAPE), an active flavonoid, plays an important role in the antioxidant activity of honeybee propolis, the isolation of CAPE from honeybee propolis is time-consuming due to wide variety of impurities present. Therefore, biochemical method to synthesize CAPE was investigated in this study. Since ionic liquids (ILs) possess some unique characteristics as appreciated alternatives to conventional solvents for certain biotransformation, the effect of ILs as reaction media for enzymatic synthesis of CAPE was assessed. Several factors including substrate molar ratio, and reaction temperature affecting the conversion yield of lipase-catalyzed CAPE synthesis were also investigated. Reaction yields were significantly higher in hydrophobic ILs than in hydrophilic ILs (almost zero). Among nine hydrophobic ILs tested, the highest conversion of synthetic reaction was obtained in 1-ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([Emim][Tf(2)N]). A reaction temperature of 70 °C was found to give high conversion. In addition, optimal substrate molar ratio between phenethyl alcohol and caffeic acid (CA) was decreased significantly from 92:1 to 30:1 when ILs were used instead of isooctane.
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Affiliation(s)
- Sung Ho Ha
- Department of Chemical Engineering and Nano-Bio Technology, Hannam University, Daejeon, 305-811, Korea.
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67
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Jogwar SS, Torres AI, Daoutidis P. Networks with large solvent recycle: Dynamics, hierarchical control, and a biorefinery application. AIChE J 2011. [DOI: 10.1002/aic.12708] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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68
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Kurata A, Takemoto S, Fujita T, Iwai K, Furusawa M, Kishimoto N. Synthesis of 3-cyclohexylpropyl caffeate from 5-caffeoylquinic acid with consecutive enzymatic conversions in ionic liquid. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcatb.2011.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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69
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Stark A, Zidell AW, Hoffmann MM. Is the ionic liquid 1-ethyl-3-methylimidazolium methanesulfonate [emim][MeSO3] capable of rigidly binding water? J Mol Liq 2011. [DOI: 10.1016/j.molliq.2011.03.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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70
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Monti D, Ottolina G, Carrea G, Riva S. Redox Reactions Catalyzed by Isolated Enzymes. Chem Rev 2011; 111:4111-40. [DOI: 10.1021/cr100334x] [Citation(s) in RCA: 174] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Daniela Monti
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Via Mario Bianco 9, 20131 Milano, Italy
| | - Gianluca Ottolina
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Via Mario Bianco 9, 20131 Milano, Italy
| | - Giacomo Carrea
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Via Mario Bianco 9, 20131 Milano, Italy
| | - Sergio Riva
- Istituto di Chimica del Riconoscimento Molecolare, C.N.R., Via Mario Bianco 9, 20131 Milano, Italy
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71
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Domínguez de María P, Maugeri Z. Ionic liquids in biotransformations: from proof-of-concept to emerging deep-eutectic-solvents. Curr Opin Chem Biol 2011; 15:220-5. [DOI: 10.1016/j.cbpa.2010.11.008] [Citation(s) in RCA: 241] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 11/03/2010] [Accepted: 11/08/2010] [Indexed: 11/29/2022]
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72
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Cardoso L, Micaelo NM. DNA molecular solvation in neat ionic liquids. Chemphyschem 2010; 12:275-7. [PMID: 21275018 DOI: 10.1002/cphc.201000645] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 11/30/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Lena Cardoso
- Chemistry Centre, Minho University, Campus Gualtar, 4710-057 Braga, Portugal
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73
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Lozano P, Bernal JM, Piamtongkam R, Fetzer D, Vaultier M. One-phase ionic liquid reaction medium for biocatalytic production of biodiesel. CHEMSUSCHEM 2010; 3:1359-1363. [PMID: 20941787 DOI: 10.1002/cssc.201000244] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- Pedro Lozano
- Departamento de Bioquímica y Biología Molecular "B" e Inmunología, Universidad de Murcia, Spain.
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74
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Quijano G, Couvert A, Amrane A. Ionic liquids: applications and future trends in bioreactor technology. BIORESOURCE TECHNOLOGY 2010; 101:8923-30. [PMID: 20667722 DOI: 10.1016/j.biortech.2010.06.161] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Revised: 06/07/2010] [Accepted: 06/08/2010] [Indexed: 05/25/2023]
Abstract
Ionic liquids (ILs) constitute a new generation of solvents entirely composed of ions. ILs are usually considered as green solvents due to their negligible vapor pressure and other properties, such as non-flammability and high thermostability. Biotechnological applications involving the use of ILs are currently emerging. Reports on enzymatic and whole-cell catalysis in the presence of ILs increased from the past decade. Nonetheless, IL decomposition at relatively low temperatures as well as IL toxicity towards microbial cells and superior organisms recently challenge the "green label" commonly attached to ILs. On the other hand, the possibility to fine-tune practically all the IL physicochemical properties by modifying its chemical structure makes IL truly designer solvents. Thus, IL tuning can be applied to overcome toxicity drawbacks and to broaden their application spectrum. This work reviews the use of ILs in biotechnological applications. Finally, critical niches for future research are identified and discussed.
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Affiliation(s)
- Guillermo Quijano
- Ecole Nationale Supérieure de Chimie de Rennes, Université de Rennes 1, CNRS, UMR 6226, Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex 7, France.
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75
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Jutz F, Andanson JM, Baiker A. Ionic liquids and dense carbon dioxide: a beneficial biphasic system for catalysis. Chem Rev 2010; 111:322-53. [PMID: 21053968 DOI: 10.1021/cr100194q] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Fabian Jutz
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Hönggerberg, HCI, Zurich, Switzerland
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76
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Xue L, Qiu H, Li Y, Lu L, Huang X, Qu Y. A novel water-in-ionic liquid microemulsion and its interfacial effect on the activity of laccase. Colloids Surf B Biointerfaces 2010; 82:432-7. [PMID: 20951007 DOI: 10.1016/j.colsurfb.2010.09.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 09/12/2010] [Accepted: 09/20/2010] [Indexed: 11/18/2022]
Abstract
It is of great significance to develop an appropriate water-in-ionic liquid (W/IL) microemulsion suitable for the expression of the catalytic activity of a given enzyme. In this paper, the phase diagram of a new AOT/Triton X-100/H(2)O/[Bmim][PF(6)] pseudo ternary system is presented. With the aid of nonionic surfactant Triton X-100, AOT could be dissolved in hydrophobic ionic liquid [Bmim][PF(6)], forming a large single phase microemulsion region. The water-in-[Bmim][PF(6)] (W/IL) microemulsion domain was identified electrochemically by using K(3)Fe(CN)(6) as a probe. The existence of W/IL microemulsions was demonstrated spectrophotometrically by using CoCl(2) as a probe. New evidences from the FTIR spectroscopic study, which was first introduced to the W/IL microemulsion by substituting D(2)O for H(2)O to eliminate the spectral interference, demonstrated that there existed bulk water at larger ω(0) values (ω(0) was defined as the molar ratio of water to the total surfactant) in the W/IL microemulsion, which had remained unclear before. In addition to the inorganic salts, biomacromolecule laccase could be solubilized in the W/IL microemulsion. The laccase hosted in the microemulsion exhibited a catalytic activity and the activity could be regulated by the composition of the interfacial membrane.
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Affiliation(s)
- Luyan Xue
- Key Laboratory of Colloid & Interface Chemistry of the Education Ministry of China, Shandong University, Jinan 250100, PR China
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77
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Bitencourt TB, Nascimento MDG. The influence of organic solvent and ionic liquids on the selective formation of 2-(2-ethylhexyl)-3-phenyl-1,2-oxaziridine mediated by lipases. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1778] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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78
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Tandem catalysis in ionic liquids: a recyclable catalytic synthesis of benzofuran derivatives. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.109] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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79
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Zarcula C, Corîci L, Croitoru R, Ursoiu A, Peter F. Preparation and properties of xerogels obtained by ionic liquid incorporation during the immobilization of lipase by the sol–gel method. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcatb.2010.01.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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80
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Kurata A, Kitamura Y, Irie S, Takemoto S, Akai Y, Hirota Y, Fujita T, Iwai K, Furusawa M, Kishimoto N. Enzymatic synthesis of caffeic acid phenethyl ester analogues in ionic liquid. J Biotechnol 2010; 148:133-8. [PMID: 20553773 DOI: 10.1016/j.jbiotec.2010.05.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Revised: 05/15/2010] [Accepted: 05/19/2010] [Indexed: 10/19/2022]
Abstract
An efficient procedure for transesterification of methyl caffeate was developed to produce caffeic acid phenethyl ester analogues with Candida antarctica lipase B using an ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, as a solvent. The system provided 48.8mM 2-cyclohexylethyl caffeate and 46.9 mM 3-cyclohexylpropyl caffeate with conversion yields of 97.6% and 93.8%, respectively. Reusability of the system was investigated, and the yield of 4-phenylbutyl caffeate was increased from 30.4 to 45.7 mM when the transesterification was carried out under reduced pressure to remove a by-product, methanol. Additionally, we showed that both 2-cyclohexylethyl caffeate and 3-cyclohexylpropyl caffeate exhibit strong antiproliferative activities, which are comparable to that of 5-fluorouracil by MTT assay.
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Affiliation(s)
- Atsushi Kurata
- Graduate School of Applied Biological Chemistry, Kinki University, 3327-204 Nakamachi, Nara City, Nara 631-8505, Japan.
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81
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Gauchot V, Kroutil W, Schmitzer A. Highly Recyclable Chemo-/Biocatalyzed Cascade Reactions with Ionic Liquids: One-Pot Synthesis of Chiral Biaryl Alcohols. Chemistry 2010; 16:6748-51. [DOI: 10.1002/chem.201000302] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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82
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Moniruzzaman M, Kamiya N, Goto M. Activation and stabilization of enzymes in ionic liquids. Org Biomol Chem 2010; 8:2887-99. [PMID: 20445940 DOI: 10.1039/b926130c] [Citation(s) in RCA: 187] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As environmentally benign "green" solvents, room temperature ionic liquids (ILs) have been used as solvents or (co)solvents in biocatalytic reactions and processes for a decade. The technological utility of enzymes can be enhanced greatly by their use in ionic liquids (ILs) rather than in conventional organic solvents or in their natural aqueous reaction media. In fact, the combination of green properties and unique tailor-made physicochemical properties make ILs excellent non-aqueous solvents for enzymatic catalysis with numerous advantages over other solvents, including high conversion rates, high selectivity, better enzyme stability, as well as better recoverability and recyclability. However, in many cases, particularly in hydrophilic ILs, enzymes show relative instability and/or lower activity compared with conventional solvents. To improve the enzyme activity as well as stability in ILs, various attempts have been made by modifying the form of the enzymes. Examples are enzyme immobilization onto support materials via adsorption or multipoint attachment, lyophilization in the presence of stabilizing agents, chemical modification with stabilizing agents, formation of cross-linked enzyme aggregates, pretreatment with polar organic solvents or enzymes combined with suitable surfactants to form microemulsions. The use of these enzyme preparations in ILs can dramatically increase the solvent tolerance, enhance activity as well as stability, and improve enantioselectivity. This perspective highlights a number of pronounced strategies being used successfully for activation and stabilization of enzymes in non-aqueous ILs media. This review is not intended to be comprehensive, but rather to present a general overview of the potential approaches to activate enzymes for diverse enzymatic processes and biotransformations in ILs.
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Affiliation(s)
- Muhammad Moniruzzaman
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Fukuoka 819-0395, Japan
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83
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Jia C, Zhao J, Feng B, Zhang X, Xia W. A simple approach for the selective enzymatic synthesis of dilauroyl maltose in organic media. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcatb.2009.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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84
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Fruchey K, Fayer MD. Dynamics in Organic Ionic Liquids in Distinct Regions Using Charged and Uncharged Orientational Relaxation Probes. J Phys Chem B 2010; 114:2840-5. [DOI: 10.1021/jp911123v] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kendall Fruchey
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - M. D. Fayer
- Department of Chemistry, Stanford University, Stanford, California 94305
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85
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Moniruzzaman M, Nakashima K, Kamiya N, Goto M. Recent advances of enzymatic reactions in ionic liquids. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2009.10.002] [Citation(s) in RCA: 376] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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