201
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Page TA, Kraut ND, Page PM, Baker GA, Bright FV. Dynamics of Loop 1 of Domain I in Human Serum Albumin When Dissolved in Ionic Liquids. J Phys Chem B 2009; 113:12825-30. [DOI: 10.1021/jp904475v] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taylor A. Page
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6110
| | - Nadine D. Kraut
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6110
| | - Phillip M. Page
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6110
| | - Gary A. Baker
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6110
| | - Frank V. Bright
- Department of Chemistry, Natural Sciences Complex, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, and Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6110
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202
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Theodosiou E, Katsoura MH, Loutrari H, Purchartová K, Křen V, Kolisis FN, Stamatis H. Enzymatic preparation of acylated derivatives of silybin in organic and ionic liquid media and evaluation of their antitumor proliferative activity. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420902937777] [Citation(s) in RCA: 14] [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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203
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Banoth L, Singh M, Tekewe A, Banerjee U. Increased enantioselectivity of lipase in the transesterification ofdl-(±)-3-phenyllactic acid in ionic liquids. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420903049903] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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204
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Hydrodynamic and oxygen mass transfer studies in a three-phase (air–water–ionic liquid) stirred tank bioreactor. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2009.03.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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205
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Eckstein M, Daußmann T, Kragl U. Recent Developments in NAD(P)H Regeneration for Enzymatic Reductions in One- and Two-Phase Systems. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420410001692769] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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206
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Hussain W, Pollard DJ, Lye GJ. The bioreduction of a β-tetralone to its corresponding alcohol by the yeastTrichosporon capitatumMY1890 and bacteriumRhodococcus erythropolisMA7213 in a range of ionic liquids. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420701568534] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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207
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Tan ZY, Wu H, Zong MH. Novozym 435-catalyzed regioselective benzoylation of 1-β-d-arabinofuranosylcytosine in a co-solvent mixture of C4MIm·PF6and pyridine. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420701510635] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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208
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De Los Ríos AP, Hernández-Fernández FJ, Martínez FA, Rubio M, Víllora G. The effect of ionic liquid media on activity, selectivity and stability ofCandida antarcticalipase B in transesterification reactions. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420701379213] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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209
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Lozano P, De Diego T, Gmouh S, Vaultier M, Iborra JL. Dynamic structure–function relationships in enzyme stabilization by ionic liquids. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420500198657] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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210
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Eker B, Zagorevski D, Zhu G, Linhardt RJ, Dordick JS. ENZYMATIC POLYMERIZATION OF PHENOLS IN ROOM TEMPERATURE IONIC LIQUIDS. JOURNAL OF MOLECULAR CATALYSIS. B, ENZYMATIC 2009; 59:177-184. [PMID: 20161409 PMCID: PMC2785128 DOI: 10.1016/j.molcatb.2009.02.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Soybean peroxidase (SBP) was used to catalyze the polymerization of phenols in room-temperature ionic liquids (RTILs). Phenolic polymers with number average molecular weights ranging from 1200 to 4100 D were obtained depending on the composition of the reaction medium and the nature of the phenol. Specifically, SBP was highly active in methylimidazolium-containing RTILs, including 1-butyl-3-methylimidazolium tetrafluoroborate (BMIM(BF(4))), and 1-butyl-3-methylpyridinium tetrafluoroborate (BMPy(BF(4))) with the ionic liquid content as high as 90% (v/v); the balance being aqueous buffer. Gel permeation chromatography and MALDI-TOF analysis indicated that higher molecular weight polymers can be synthesized in the presence of higher RTIL concentrations, with selective control over polymer size achieved by varying the RTIL concentration. The resulting polyphenols exhibited high thermostability and possessed thermosetting properties.
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Affiliation(s)
- Bilge Eker
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Dmitri Zagorevski
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Guangyu Zhu
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Robert J. Linhardt
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biology, Rensselaer Nanotechnology Center, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Jonathan S. Dordick
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biology, Rensselaer Nanotechnology Center, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, New York 12180
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211
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Kumar D, Patel G, Kumar A, K. Roy R. Ionic liquid catalyzed expeditious synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones and 2-aryl-2,3-dihydro-4H-chromen-4-ones under microwave irradiation. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.123] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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212
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Dhake KP, Qureshi ZS, Singhal RS, Bhanage BM. Candida antarctica lipase B-catalyzed synthesis of acetamides using [BMIm(PF6)] as a reaction medium. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.170] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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213
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Hu Y, Guo Z, Lue BM, Xu X. Enzymatic synthesis of esculin ester in ionic liquids buffered with organic solvents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:3845-3852. [PMID: 19415928 DOI: 10.1021/jf8037488] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The enzymatic esterification of esculin catalyzed by Candida antarctica lipase B (Novozym 435) was carried out in ionic liquid (IL)-organic solvent mixed systems in comparison with individual systems. The reaction behaviors in IL-organic solvents were systemically evaluated using acetone as a model solvent. With organic solvents as media, the esterification rates of esculin depended mainly on its solubility in solvents; for the reactions in ILs, the reaction rates were generally low, and the anion part of the IL played a critical role in enzyme activity. Therefore, the esterification of esculin in IL-acetone mixtures made it possible to improve the solubility of esculin while the effects of ILs on lipase activity were minimized. Following the benignity of ILs to lipase activity, the anions of ILs were ranked in the order as [Tf(2)N](-) > [PF(6)](-) > [BF(4)](-) > [CF(3)SO(3)](-) > [C(4)F(9)SO(3)](-) > [TAF](-) > [MDEGSO(4)](-) > [OctSO(4)](-) > [ES](-) = [DMP](-) = [OTs](- )= Cl(-). The reaction behaviors differed in different systems and largely depended on the properties of the ILs and organic solvents. In general, improvements were observed in terms of both solubility and reaction efficiency. The knowledge acquired in this work gives a better understanding of multiple interactions in IL-organic solvent systems, which provide guidance for system design and optimization.
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Affiliation(s)
- Yifan Hu
- National Food Institute, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
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214
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Zhao H, Baker GA, Song Z, Olubajo O, Zanders L, Campbell SM. Effect of ionic liquid properties on lipase stabilization under microwave irradiation. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2008.08.006] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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215
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Vidya P, Chadha A. The role of different anions in ionic liquids on Pseudomonas cepacia lipase catalyzed transesterification and hydrolysis. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2008.08.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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216
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Sun W, Li X, Jiao K. Direct Electrochemistry of Myoglobin in a Nafion-Ionic Liquid Composite Film Modified Carbon Ionic Liquid Electrode. ELECTROANAL 2009. [DOI: 10.1002/elan.200804498] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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217
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Enzymatic acylation of polar dipeptides: Influence of reaction media and molecular environment of functional groups. Process Biochem 2009. [DOI: 10.1016/j.procbio.2008.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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218
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Azzam EMS, Badawi AM, Alawady ARE, Soliman A. Synthesis and Characterization of Self-Assembling Some Thiol Surfactants on Gold Nanoparticles. J DISPER SCI TECHNOL 2009. [DOI: 10.1080/01932690802553932] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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219
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Fujita K, Macfarlane DR, Noguchi K, Ohno H. Choline dihydrogen phosphate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o709. [PMID: 21582446 PMCID: PMC2969078 DOI: 10.1107/s1600536809007259] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Accepted: 02/27/2009] [Indexed: 11/15/2022]
Abstract
In the cystal structure of the title compound, (2-hydroxyethyl)trimethylammonium dihydrogen phosphate, C5H14NO+·H2PO4−, two anions create dimeric structures via two O—H⋯O hydrogen bonds. The hydrogen-bonded dimers are connected by another O—H⋯O hydrogen bond with the hydroxyl groups of the cations, constructing a columner structure along the a axis. A number of C—H⋯O interactions are also present.
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220
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Adamczak M, Bornscheuer UT. Improving ascorbyl oleate synthesis catalyzed by Candida antarctica lipase B in ionic liquids and water activity control by salt hydrates. Process Biochem 2009. [DOI: 10.1016/j.procbio.2008.10.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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221
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Zhang L, Wang M, Shen Y, Ma Y, Luo J. Improvement of steroid biotransformation with hydroxypropyl-beta-cyclodextrin induced complexation. Appl Biochem Biotechnol 2009; 159:642-54. [PMID: 19189059 DOI: 10.1007/s12010-008-8499-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2008] [Accepted: 12/16/2008] [Indexed: 11/28/2022]
Abstract
The inclusion complexes induced by cyclodextrins and its derivates have been shown previously to enhance the biotransformation of hydrophobic compounds. Using hydroxypropyl-beta-cyclodextrin (HP-beta-CD; 20% w/v), the water solubility of cortisone acetate increased from 0.039 to 7.382 g L(-1) at 32 degrees C. The solubilization effect of HP-beta-CD was far superior to dimethylformamide (DMF) and ethanol. The dissolution rate also significantly increased in the presence of HP-beta-CD. The enzymatic stability of Delta(1)-dehydrogenase from Arthrobacter simplex TCCC 11037 was not influenced by the increasing concentrations of HP-beta-CD contrary to the organic cosolvents which negatively influenced in the order DMF > ethanol. The activity inhibition effect caused by HP-beta-CD was not so conspicuous as ethanol and DMF. Inactivation constants of ethanol, DMF, and HP-beta-CD were 5.832, 4.541, and 1.216, respectively. The inactivation energy (E (a)) was in the order of HP-beta-CD (55.1 kJ mol(-1)) > ethanol (39.9 kJ mol(-1)) > DMF (37.1 kJ mol(-1)).
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Affiliation(s)
- Liting Zhang
- Key Laboratory of Industrial Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, People's Republic of China
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222
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Li XY, Zhou J, Yu M, Wang JJ, Pei YC. Toxic effects of 1-methyl-3-octylimidazolium bromide on the early embryonic development of the frog Rana nigromaculata. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2009; 72:552-556. [PMID: 18082266 DOI: 10.1016/j.ecoenv.2007.11.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Revised: 10/29/2007] [Accepted: 11/04/2007] [Indexed: 05/25/2023]
Abstract
Toxic effects of 1-methyl-3-octylimidazolium bromide ([C8mim]Br) on the early embryonic development of the frog Rana nigromaculata were evaluated. Frog embryos in different developmental stages (early cleavage, early gastrula, or neural plate) were exposed to 0, 45, 63, or 88.2 mg/L of the ionic liquid [C8mim]Br for 96 h. The 96-h median lethal concentration values at the early cleavage, early gastrula, and neural plate stages of development were 85.1, 43.4, and 42.4 mg/L, respectively. In embryos exposed to [C8mim]Br, the duration of embryo dechorionation was prolonged in the early cleavage and neural plate, but not the early gastrula, stages of development compared with control embryos. Embryos in the neural plate developmental stage were found to have the highest mortality rate following [C8mim]Br exposure. These results suggest that [C8mim]Br has toxic effects on the early embryonic development of the frog.
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Affiliation(s)
- Xiao-Yu Li
- School of Life Science, Henan Normal University, Xinxiang 453007, China.
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223
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Moniruzzaman M, Kamiya N, Goto M. Biocatalysis in water-in-ionic liquid microemulsions: a case study with horseradish peroxidase. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:977-982. [PMID: 19113810 DOI: 10.1021/la803118q] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this article we report the first results on the enzymatic activity of horseradish peroxidase (HRP) microencapsulated in water-in-ionic liquid (w/IL) microemulsions using pyrogallol as the substrate. Toward this goal, the system used in this study was composed of anionic surfactant AOT (sodium bis(2-ethyl-1-hexyl)sulfosuccinate)/hydrophobic IL [C(8)mim][Tf(2)N] (1-octyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)amide)/water/1-hexanol. In this system, the catalytic activity of HRP was measured as a function of substrate concentrations, W(0) (molar ratio of water to surfactant), pH, and 1-hexanol content. The curve of the activity-W(0) profile was found to be hyperbolic for the new microemulsion. The apparent Michaelis-Menten kinetic parameters (k(cat) and K(m)) were estimated and compared to those obtained from a conventional microemulsion. Apparently, it was found that HRP-catalyzed oxidation of pyrogallol by hydrogen peroxide in IL microemulsuions is much more effective than in a conventional AOT/water/isooctane microemulsion. The stability of HRP solubilized in the newly developed w/IL microemulsions was examined, and it was found that HRP retained almost 70% of its initial activity after incubation at 28 degrees C for 30 h.
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Affiliation(s)
- M Moniruzzaman
- Department of Applied Chemistry, Graduate School of Engineering, and Center for Future Chemistry, Kyushu University, 744 Moto-oka, Fukuoka 819-0395, Japan
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224
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Wang W, Zong MH, Lou WY. Use of an ionic liquid to improve asymmetric reduction of 4′-methoxyacetophenone catalyzed by immobilized Rhodotorula sp. AS2.2241 cells. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2008.05.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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225
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Izutsu KI, Kadoya S, Yomota C, Kawanishi T, Yonemochi E, Terada K. Stabilization of Protein Structure in Freeze-Dried Amorphous Organic Acid Buffer Salts. Chem Pharm Bull (Tokyo) 2009; 57:1231-6. [DOI: 10.1248/cpb.57.1231] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Saori Kadoya
- Faculty of Pharmaceutical Sciences, Toho University
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226
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Laane C, Boeren S, Vos K, Veeger C. Rules for Optimization of Biocatalysis in Organic Solvents. Biotechnol Bioeng 2009; 102:2-8; discussion 1. [DOI: 10.1002/bit.22209] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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227
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Li H, Kobrak MN. A molecular dynamics study of the influence of ionic charge distribution on the dynamics of a molten salt. J Chem Phys 2009; 131:194507. [DOI: 10.1063/1.3263129] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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228
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Zaragoza-Gasca P, Villamizar-Gálvez OJ, García-Arrazola R, Gimeno M, Bárzana E. Use of ionic liquid for the enzyme-catalyzed polymerization of phenols. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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229
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Abstract
The role of ionic liquids (ILs) as solvents in chemistry is limited by the poor understanding of the solvation phenomenon in these media. The usual classification criteria used for molecular solvents through various experimental measurements fail to insert ILs into a univocal classification for ILs. Here, we first discuss the unsuitability of the usual interpretative scheme for molecular liquids and elucidate schematically the mechanism of solvation in ILs, pointing out the peculiarities that differentiate them with respect to molecular liquids. Second, we focus on reactivity and reaction kinetics in ILs, underlining the many problems that the complexity of these media reflects on the interpretation of kinetic data and some possible approaches to understand qualitatively the (often not trivial) kinetic problems for reactions performed in ILs.
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230
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Nakashima K, Kamiya N, Koda D, Maruyama T, Goto M. Enzyme encapsulation in microparticles composed of polymerized ionic liquids for highly active and reusable biocatalysts. Org Biomol Chem 2009; 7:2353-8. [DOI: 10.1039/b823064a] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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231
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Tsuda T, Hussey CL. Electrochemistry of Room-Temperature Ionic Liquids and Melts. MODERN ASPECTS OF ELECTROCHEMISTRY 2009. [DOI: 10.1007/978-1-4419-0655-7_2] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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232
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Shen Y, Zhang Y, Kuehner D, Yang G, Yuan F, Niu L. Ion-responsive behavior of ionic-liquid surfactant aggregates with applications in controlled release and emulsification. Chemphyschem 2008; 9:2198-202. [PMID: 18932155 DOI: 10.1002/cphc.200800449] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We propose a simple but efficient, rapid, and quantitative ion-responsive micelle system based on counter-anion exchange of a surfactant with an imidazolium unit. The ion-exchange reaction results in the amphiphilic-to-hydrophobic transition of the imidazolium salt, leading to the destruction of the micelles, which has been successfully applied to controlled release and emulsification. The proposed design offers a novel alternative stimulus to control these smart physical aggregates besides pH, temperature and light-with extra advantages. Our finding greatly benefits both fundamental research and industry.
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Affiliation(s)
- Yanfei Shen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry and Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, PR China
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233
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Effects of 1-butyl-3-methylimidazolium tetrafluoroborate on the oxidation of glucose catalyzed by glucose oxidase. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2008.06.071] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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234
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Plaquevent JC, Levillain J, Guillen F, Malhiac C, Gaumont AC. Ionic Liquids: New Targets and Media for α-Amino Acid and Peptide Chemistry. Chem Rev 2008; 108:5035-60. [DOI: 10.1021/cr068218c] [Citation(s) in RCA: 239] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean-Christophe Plaquevent
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Jocelyne Levillain
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Frédéric Guillen
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Catherine Malhiac
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
| | - Annie-Claude Gaumont
- CNRS-UMR 5068, LSPCMIB, Université Paul Sabatier, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France, Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, FR CNRS 3038, 6 boulevard du Maréchal Juin, F-14050 Caen, France, CNRS-UMR 6014, IRCOF, Université de Rouen, rue Tesnière, F-76821 Mont-Saint-Aignan Cedex, France, and URCOM, EA 3221 FR CNRS 3038, Université du Havre, 25 rue Ph. Lebon, BP 540, F-76058 Le Havre Cedex, France
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235
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Lichtenecker RJ, Schmid W. Application of various ionic liquids as cosolvents for chloroperoxidase-catalysed biotransformations. MONATSHEFTE FUR CHEMIE 2008. [DOI: 10.1007/s00706-008-0081-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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236
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Yu M, Li SM, Li XY, Zhang BJ, Wang JJ. Acute effects of 1-octyl-3-methylimidazolium bromide ionic liquid on the antioxidant enzyme system of mouse liver. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2008; 71:903-908. [PMID: 18423588 DOI: 10.1016/j.ecoenv.2008.02.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Revised: 09/23/2007] [Accepted: 02/24/2008] [Indexed: 05/26/2023]
Abstract
The effects of acute exposure of intraperitoneal injection of aqueous 1-octyl-3-methylimidazolium bromide on the antioxidant enzymes and lipid peroxidation of the treated mouse liver were investigated in the present paper. Thirty mice were treated with 17.9 (0.5 median lethal dose, LD(50)) and 35.7 mg/kg (1 LD(50)) of the ionic liquid or saline solution by intraperitoneal injection for 10h. Significant increase in hepatosomatic index and decrease in liver protein content were found in 1 LD(50) group. No statistically significant change was observed in the activity of superoxide dismutase in both treated groups compared to the control group. In the case of catalase activity, the decrease was recorded only at dose of 1 LD(50). As for the activity of glutathione peroxidase, increase in 0.5 LD(50) group while significant decrease at dose of 1 LD(50) was noted. There was an increase in the activity of glutathione-S-transferase in these two treated groups in comparison to the control. However, no effect on the level of lipid peroxidation was found in the treated groups. These results showed that the acute exposure of aqueous ionic liquid could cause damage to mouse, leading to antioxidant responses in livers of the treated mice.
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Affiliation(s)
- Miao Yu
- School of Life Science, Henan Normal University, Xinxiang 453007, China
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237
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Husson E, Humeau C, Blanchard F, Framboisier X, Marc I, Chevalot I. Chemo-selectivity of the N,O-enzymatic acylation in organic media and in ionic liquids. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcatb.2008.02.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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238
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Domínguez de María P. "Nonsolvent" applications of ionic liquids in biotransformations and organocatalysis. Angew Chem Int Ed Engl 2008; 47:6960-8. [PMID: 18651677 DOI: 10.1002/anie.200703305] [Citation(s) in RCA: 161] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The application of room-temperature ionic liquids (RTILs) as (co)solvents and/or reagents is well documented. However, RTILS also have "nonsolvent" applications in biotransformations and organocatalysis. Examples are the anchoring of substrates to RTILs; ionic-liquid-coated enzymes (ILCE) and enzyme-IL colyophilization; the construction of biocatalytic ternary reaction systems; the combination of enzymes, RTILs, membranes, and (bio)electrochemistry; and ionic-liquid-supported organocatalysts. These strategies provide more robust, more efficient, and more enantioselective bio- and organocatalysts with many practical applications. As shown herein, RTILs offer a wide range of promising alternatives to conventional chemistry.
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Affiliation(s)
- Pablo Domínguez de María
- AkzoNobel BV, Chemicals Process and Product Technology Department, Velperweg 76, P.O. Box 9300, 6800 SB Arnhem, The Netherlands.
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239
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Sakai S, Kodama L, Matsumura H, Nakamura N, Yohda M, Ohno H. Solubilization of heme proteins in low polar solvents by chemical modification on a protein's surface. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1211] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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240
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Domínguez de María P. “Nonsolvens”-Anwendungen von ionischen Flüssigkeiten bei Biotransformationen und in der Organokatalyse. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200703305] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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241
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Hussain W, Pollard DJ, Truppo M, Lye GJ. Enzymatic ketone reductions with co-factor recycling: Improved reactions with ionic liquid co-solvents. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcatb.2008.01.006] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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242
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Müller TE, Hultzsch KC, Yus M, Foubelo F, Tada M. Hydroamination: Direct Addition of Amines to Alkenes and Alkynes. Chem Rev 2008; 108:3795-892. [PMID: 18729420 DOI: 10.1021/cr0306788] [Citation(s) in RCA: 1699] [Impact Index Per Article: 99.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas E. Müller
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kai C. Hultzsch
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Miguel Yus
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Francisco Foubelo
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mizuki Tada
- CAT Catalytic Center, ITMC, RWTH Aachen, Worringerweg 1, 52074 Aachen, Germany, Department of Chemistry and Chemical Biology, Rutgers University, 610 Taylor Road, Piscataway, NJ 08854-8087, Departamento de Química Orgánica, Universidad de Alicante, E-03080 Alicante, Spain, and Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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243
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Effect of ionic liquid [BMIM][PF6] on asymmetric reduction of ethyl 2-oxo-4-phenylbutyrate by Saccharomyces cerevisiae. J Ind Microbiol Biotechnol 2008; 35:1419-24. [DOI: 10.1007/s10295-008-0442-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2008] [Accepted: 07/30/2008] [Indexed: 11/26/2022]
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244
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Wehofsky N, Wespe C, Cerovsky V, Pech A, Hoess E, Rudolph R, Bordusa F. Ionic liquids and proteases: a clean alliance for semisynthesis. Chembiochem 2008; 9:1493-9. [PMID: 18509837 DOI: 10.1002/cbic.200800025] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Herein we present the first report on protease-catalysed ligation of cleavage-sensitive peptide and protein fragments in ionic-liquid-containing solvent systems. By applying the newly established [MMIM][Me2PO4]/buffer mixture as a reaction medium, significant advantages over purely aqueous or conventional organic solvent-containing media could be identified, including in particular the use of active wild-type proteases as biocatalysts, the suppression of any competitive proteolytic side reactions, the high turnover rates compared to classical organic solvents and the high stability of chemically labile reactants.
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Affiliation(s)
- Nicole Wehofsky
- Max Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, 06120 Halle/Saale, Germany
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245
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Zhou GP, Zhang Y, Huang XR, Shi CH, Liu WF, Li YZ, Qu YB, Gao PJ. Catalytic activities of fungal oxidases in hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate-based microemulsion. Colloids Surf B Biointerfaces 2008; 66:146-9. [PMID: 18602799 DOI: 10.1016/j.colsurfb.2008.05.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2008] [Revised: 05/19/2008] [Accepted: 05/19/2008] [Indexed: 11/17/2022]
Abstract
For hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF(6)]), an H(2)O-in-[BMIM][PF(6)] microemulsion could be formed in the presence of nonionic surfactant Triton X-100 (TX-100). In such a medium, both lignin peroxidase (LiP) and laccase could express their catalytic activity with the optimum molar ratio of H(2)O to TX-100 at 8.0 for LiP and >20 for laccase, and the optimum pH values at 3.2 for LiP and 4.2 for laccase, respectively. As compared with pure or water saturated [BMIM][PF(6)], in which the two oxidases had negligible catalytic activity due to the strong inactivating effect of [BMIM][PF(6)] on both enzymes, the use of the [BMIM][PF(6)]-based microemulsion had some advantages. Not only the catalytic activities of both fungal oxidases greatly enhanced, but also the apparent viscosity of the medium decreased.
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Affiliation(s)
- Gui-Ping Zhou
- Key Laboratory of Colloid & Interface Chemistry of the Education Ministry of China, Shandong University, Jinan 250100, People's Republic of China
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246
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Kiefer J, Obert K, Bösmann A, Seeger T, Wasserscheid P, Leipertz A. Quantitative Analysis of Alpha-D-glucose in an Ionic Liquid by Using Infrared Spectroscopy. Chemphyschem 2008; 9:1317-22. [DOI: 10.1002/cphc.200800170] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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247
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Selective esterification of phthalic acids in two ionic liquids at high temperatures using a thermostable lipase of Bacillus thermocatenulatus: A comparative study. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcatb.2007.11.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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248
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Pei Y, Wu K, Wang J, Fan J. Recovery of Furfural from Aqueous Solution by Ionic Liquid Based Liquid–Liquid Extraction. SEP SCI TECHNOL 2008. [DOI: 10.1080/01496390802064018] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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249
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Supported phospholipid bilayer interaction with components found in typical room-temperature ionic liquids - a QCM-D and AFM Study. Int J Mol Sci 2008; 9:498-511. [PMID: 19325765 PMCID: PMC2635696 DOI: 10.3390/ijms9040498] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2007] [Revised: 02/26/2008] [Accepted: 03/14/2008] [Indexed: 11/17/2022] Open
Abstract
Quartz crystal microbalance with dissipation (QCM-D) monitoring and atomic force microscopy (AFM) were combined to evaluate the defects created by an ionic liquid anion and a cation in a supported phospholipid bilayer composed of zwitterionic lipids on a silica surface. The cation 1-octyl-3-methyl imidazolium (OMIM(+)) was shown to remove lipids from the bilayer, increase the roughness to approximately 2.8 nm (~0.2 for stable supported bilayer) and possibly redeposit lipids with entrapped water. The anion bis(trifluoromethylsulfonyl)imide (Tf(2)N(-)) was found to leave distinct defects within the bilayer that had large pore-like interiors which left the surrounding bilayer intact. However, the ionic liquid 1-butyl-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide (BMP-Tf(2)N) formed a film over the supported bilayer. This work demonstrates, for the first time, the direct effects common components of ionic liquids have on a supported phospholipids bilayer.
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250
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Singh T, Kumar A. Self-aggregation of ionic liquids in aqueous media: A thermodynamic study. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.12.043] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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