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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1240

Title: Lactose hydrolysis by Lactozym™ immobilized on cellulose beads in batch and fluidized bed modes
Authors: Roy, Ipsita
Gupta, Munishwar N
Keywords: Fluidized bed reactor
Kluyveromyces fragilis
Lactose hydrolysis
Low lactose milk
Whey hydrolysis
Issue Date: 2003
Citation: Process Biochemistry, 39(3), 325-332
Abstract: Lactozym™ is a commercially available preparation of β-galactosidase from Kluyveromyces fragilis. It has valid generally recognized as safe (GRAS) status for whey hydrolysis and production of low lactose milk. Immobilized β-galactosidase from K. fragilis has been less studied. In this work, Lactozym™ was immobilized on cellulose beads via epichlorohydrin coupling chemistry. The optimized preparation was characterized in terms of its kinetic parameters. The fluidized bed hydrolyzed whey lactose (>90% conversion) in 5 h as compared to 48 h taken by the same enzyme in continuous batch mode. The immobilized enzyme could be reused three times without any change in the performance of the fluidized bed reactor. The fluidized bed could also hydrolyze milk lactose up to 60% within 5 h. The above data show that this enzyme from a GRAS status source can also be used to develop a process for lactose hydrolysis for whey utilization as well as production of low lactose milk.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1240
Appears in Collections:Chemistry

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