dc.contributor.author | Salgin, Ugur | |
dc.contributor.author | Salgin, Sema | |
dc.contributor.author | Takac, Serpil | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T10:15:55Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T10:15:55Z | |
dc.date.issued | 2007 | |
dc.identifier.issn | 0896-8446 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.supflu.2007.06.006 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/10493 | |
dc.description | WOS: 000250937000017 | en_US |
dc.description.abstract | The enantioselective hydrolysis of racemic naproxen methyl ester by Candida rugosa lipase (CRL) was studied in aqueous buffer solution/isooctane reaction system in the presence of supercritical CO2. The effects pressure (75-160 bar), temperature (32-42 degrees C ) and reaction time (0.5-12 h) on the enantiomeric excesses of the product (ee(p)) and the substrate (ee(s)), enantiomeric ratio (E), conversion (x) and enzyme activity were investigated in a batch reactor system. The highest enantiomeric ratio achieved at 120 bar of pressure, 37 C of temperature and 2 h of reaction time was E= 193 with x=41.3%, ee(p)=97.9% and ee(s)=68.8%. CRL remained active at least for 12h at 37 degrees C and 120 bar in supercritical CO2 medium. Furthermore. enantiomeric ratio increased with increasing reaction time and reached the value of E=236 with ee(p) =98.2%, ee(s) =70.0% and x=41.6% after 12 h of hydrolysis. (C) 2007 Elsevier B.V. All rights reserved. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | ELSEVIER SCIENCE BV | en_US |
dc.relation.isversionof | 10.1016/j.supflu.2007.06.006 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | naproxen | en_US |
dc.subject | racemic naproxen methyl ester | en_US |
dc.subject | enantioselective hydrolysis | en_US |
dc.subject | Candida rugosa lipase | en_US |
dc.subject | supercritical CO2 | en_US |
dc.title | The enantioselective hydrolysis of racemic naproxen methyl ester in supercritical CO2 using Candida rugosa lipase | en_US |
dc.type | article | en_US |
dc.relation.journal | JOURNAL OF SUPERCRITICAL FLUIDS | en_US |
dc.contributor.department | Cumhuriyet Univ, Fac Engn, Dept Chem Engn, TR-58140 Sivas, Turkey -- Ankara Univ, Fac Engn, Dept Chem Engn, TR-06100 Ankara, Turkey | en_US |
dc.identifier.volume | 43 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.endpage | 316 | en_US |
dc.identifier.startpage | 310 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |