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Kinetics and Specificity of Lipozyme-Catalysed Oil Hydrolysis in Supercritical CO2

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F08%3A00310266" target="_blank" >RIV/61388963:_____/08:00310266 - isvavai.cz</a>

  • Alternative codes found

    RIV/67985858:_____/08:00310266

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Kinetics and Specificity of Lipozyme-Catalysed Oil Hydrolysis in Supercritical CO2

  • Original language description

    Selective enzyme-catalysed hydrolysis of blackcurrant seed oil was studied with aim to obtain different levels of alpha- and/or gamma-linolenic acid in lipid classes in the hydrolyzate, making them suitable for special dietary needs. Supercritical CO2 with dissolved oil and water flowed through a packed bed reactor (temperature 40 °C, pressure 15-28 MPa, superficial velocity 0.1-0.7 mm/s) where Lipozyme, a 1,3-specific lipase from Mucor miehei was 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 controlled by both Michaelis-Menten kinetics and mass transfer. The maximum rate of fatty acids liberation per unit amount of enzyme, 2.6 mmol/s kg, wasachieved at the maximum pressure and flow rate. The liberated fatty acids were enriched in alpha-linolenic, palmitic and stearic acids, while di- and monoacylglycerols contained increased levels of gamma-linolenic and stearidonic acids.

  • Czech name

    Kinetika a specificita hydrolýzy oleje v superkritickém CO2 katalyzované Lipozymem

  • Czech description

    Selektivní enzymem katalyzovaná hydrolýza oleje ze semen černého rybízu byla studována s cílem získat v jednotlivých třídách lipidů v hydrolyzátu různé koncentrace alfa a/nebo gama-linolenové kyseliny, což by našlo uplatnění ve speciálních dietách. Oleja voda rozpuštěné v superkritickém CO2 tekly náplňovým reaktorem (teplota 40 °C, tlak 15-28 MPa, fiktivní rychlost 0.1-0.7 mm/s) obsahujícím Lipozyme, 1,3-specifickou lipasu z Mucor miehei imobilizovanou na makroporézní pryskyřici. K udržení stabilní aktivity enzymu bylo nutno zabránit srážení vody v reaktoru. Reakce byla řízena jak kinetikou Michaelis-Mentenové, tak i přenosem hmoty. Maximální rychlost uvolňování mastných kyselin na jednotku hmoty enzymu, 2.6 mmol/s kg, byla dosažena při maximálním tlaku a průtoku. Uvolněné kyseliny byly obohaceny alfa-linolenovou, palmitovou a stearovou kyselinou, kdežto v di- a monoacylglycerolech byla zvýšená koncentrace gama-linolenové a stearidonové kyseliny.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Chemical Engineering Research and Design

  • ISSN

    0263-8762

  • e-ISSN

  • Volume of the periodical

    86

  • Issue of the periodical within the volume

    7

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    9

  • Pages from-to

  • UT code for WoS article

    000258545800003

  • EID of the result in the Scopus database