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Kinetics and specificity of Lipozyme-catalysed oil hydrolysis in supercritical CO(2)
dc.creator | Sovova, H. | |
dc.creator | Zarevucka, M. | |
dc.creator | Bernasek, P. | |
dc.creator | Stamenić, Marko | |
dc.date.accessioned | 2021-03-10T10:53:22Z | |
dc.date.available | 2021-03-10T10:53:22Z | |
dc.date.issued | 2008 | |
dc.identifier.issn | 0263-8762 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1246 | |
dc.description.abstract | Blackcurrant seed oil is rich in linoleic and linolenic acids. Selective enzyme-catalysed oil hydrolysis was studied with aim to obtain different levels of alpha- and/or gamma-linolenic acid in the mixture of liberated fatty acids and in the fraction of di- and monoacylglycerols, making them suitable for special dietary needs. The oil was dissolved in supercritical carbon dioxide flowing through a packed bed reactor (temperature 40 degrees C, pressure 15-28 MPa, and superficial velocity 0.1-0.7 mm s(-1)) with Lipozyme(R), a 1,3-specific lipase from Mucor miehei immobilised on a macroporous ion-exchange resin. The enzyme activity was stable as long as water precipitation in the reactor was prevented. The reaction was found to be controlled by both Michaelis-Menten kinetics and mass transfer. The maximum rate of fatty acids liberation per unit amount of enzyme, 2.6 x 10(-3) mol s(-1) kg(-1), was achieved at the maximum flow velocity and pressure. Compared to oil, the liberated fatty acids contained more alpha-linolenic, palmitic and stearic acids, while di- and monoacylglycerols contained increased levels of gamma-linolenic and stearidonic acids. | en |
dc.publisher | Inst Chemical Engineers, Rugby | |
dc.rights | restrictedAccess | |
dc.source | Chemical Engineering Research & Design | |
dc.subject | packed bed reactor | en |
dc.subject | enzymatic hydrolysis | en |
dc.subject | supercritical CO(2) | en |
dc.subject | blackcurrant seed oil | en |
dc.subject | 1,3-specific lipase | en |
dc.title | Kinetics and specificity of Lipozyme-catalysed oil hydrolysis in supercritical CO(2) | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 681 | |
dc.citation.issue | 7A | |
dc.citation.other | 86(7A): 673-681 | |
dc.citation.rank | M22 | |
dc.citation.spage | 673 | |
dc.citation.volume | 86 | |
dc.identifier.doi | 10.1016/j.cherd.2008.03.006 | |
dc.identifier.scopus | 2-s2.0-56349102256 | |
dc.identifier.wos | 000258545800003 | |
dc.type.version | publishedVersion |