dc.creatorFerrari, RA
dc.creatorEsteves, W
dc.creatorMukherjee, KD
dc.date1997
dc.dateFEB
dc.date2014-12-16T11:36:56Z
dc.date2015-11-26T17:27:15Z
dc.date2014-12-16T11:36:56Z
dc.date2015-11-26T17:27:15Z
dc.date.accessioned2018-03-29T00:14:24Z
dc.date.available2018-03-29T00:14:24Z
dc.identifierJournal Of The American Oil Chemists Society. Amer Oil Chemists Soc, v. 74, n. 2, n. 93, n. 96, 1997.
dc.identifier0003-021X
dc.identifierWOS:A1997WJ71700004
dc.identifier10.1007/s11746-997-0150-9
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/77183
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/77183
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/77183
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1284751
dc.descriptionSteryl ester content of refined and interesterified corn, soybean, and rapeseed oils has been measured via cleanup on a short silica gel column, followed by high performance liquid chromatography with evaporative light-scattering mass detector. Chemical interesterification, catalyzed by sodium methoxide, led to random positional distribution of fatty acids in triacylglycerols and some increase in the steryl ester content of all three oils. Enzymatic interesterification, catalyzed by the immobilized lipase from Rhizomucor miehei (Lipozyme), resulted in a distinct reduction in steryl ester content, but essentially no alteration in positional distribution of fatty acids in triacylglycerols occurred. Formation of steryl esters during chemical and enzymatic interesterification was also examined by radioactive tracer technique with [4-C-14]beta-sitosterol added as marker to refined rapeseed oil and measurement of the radioactive steryl esters formed. Chemical interesterification of rapeseed oil resulted in moderate formation (10% of total radioactivity) of radioactive beta-sitosteryl esters. Enzymatic interesterification of the oil, catalyzed by Lipozyme, led to little formation of radioactive beta-sitosteryl esters, whereas with the lipase from Candida cylindracea high proportions (>90% of total radioactivity) of C-14-labeled beta-sitosteryl esters were formed.
dc.description74
dc.description2
dc.description93
dc.description96
dc.languageen
dc.publisherAmer Oil Chemists Soc
dc.publisherChampaign
dc.relationJournal Of The American Oil Chemists Society
dc.relationJ. Am. Oil Chem. Soc.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectCandida cylindracea lipase
dc.subjectchemical interesterification
dc.subjectenzymatic interesterification
dc.subjectpositional distribution of fatty acids
dc.subjectradioactive tracer technique
dc.subjectRhizomucor miehei lipase
dc.subjectbeta-sitosterol
dc.subjectsteryl esters
dc.subjectLipase-catalyzed Interesterification
dc.titleAlteration of steryl ester content and positional distribution of fatty acids in triacylglycerols by chemical and enzymatic interesterification of plant oils
dc.typeArtículos de revistas


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