Formation of polyol–fatty acid esters by lipases in reverse micellar media
dc.contributor.author | Hayes, Douglas G. | en_US |
dc.contributor.author | Gulari, Erdogan | en_US |
dc.date.accessioned | 2006-04-28T16:31:13Z | |
dc.date.available | 2006-04-28T16:31:13Z | |
dc.date.issued | 1992-06-05 | en_US |
dc.identifier.citation | Hayes, Douglas G.; Gulari, Erdogan (1992)."Formation of polyol–fatty acid esters by lipases in reverse micellar media." Biotechnology and Bioengineering 40(1): 110-118. <http://hdl.handle.net/2027.42/37922> | en_US |
dc.identifier.issn | 0006-3592 | en_US |
dc.identifier.issn | 1097-0290 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/37922 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=18601051&dopt=citation | en_US |
dc.description.abstract | The synthesis of polyol–fatty acid esters has strong implications in such industries as foods, cosmetics, and polymers. We have investigated these esterification reactions employing the polyols ethylene glycol, 2-monoglyceride, and sugars and their dervatives with the biocatalyst lipase in water/AOT/isooctane reverse micellar media. For the first reaction, 50–60% conversion was achieved and product selectivity toward the monoester over the diester shown possible by employing lipase from Rhizopus delemar. A simple kinetic model based on the formation of acyl-enzyme intermediate accurately predicted the effect of polyol concentration but not the effect of fatty acid or water concentration probably due to the model exclusion of paritioning effects. The success of this reaction in reverse micellar media is due greatly to its capacity to solubilize large quantities of glycol despite the media's overall hydrophobicity. The second reaction, investigated for its potential for production of “mixed” glycerides, also achieved about 50% conversion but had only a small portion of triglyceride in its product distribution. Also, isomerization of the 2-monoglyceride to 1-monoglyceride, followed by hydrolysis of the latter, unfortunately occurred to a significant extent. Attempts at esterification with hexoses and their derivatives such as glucose and mannitol produced no convesion. | en_US |
dc.format.extent | 956964 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Wiley Subscription Services, Inc., A Wiley Company | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Biochemistry and Biotechnology | en_US |
dc.title | Formation of polyol–fatty acid esters by lipases in reverse micellar media | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbsecondlevel | Mathematics | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Statistics and Numeric Data | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Social Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 | en_US |
dc.contributor.affiliationum | Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 ; Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 | en_US |
dc.identifier.pmid | 18601051 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/37922/1/260400116_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/bit.260400116 | en_US |
dc.identifier.source | Biotechnology and Bioengineering | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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