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A novel reactive perstraction system based on liquid‐core microcapsules applied to lipase‐catalyzed biotransformations
Author(s) -
Wyss A.,
von Stockar U.,
Marison I.W.
Publication year - 2005
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.20687
Subject(s) - lipase , catalysis , chemistry , core (optical fiber) , triacylglycerol lipase , biotransformation , organic chemistry , chromatography , enzyme , materials science , composite material
A novel reactive perstraction system has been developed based on liquid‐core capsules, involving an enzyme‐catalyzed reaction coupled with simultaneous in situ product recovery. Lipase‐catalyzed reactions, hydrolysis of triprionin and nitrophenyl laurate, were selected to test the system and demonstrate the feasibility of immobilization of enzymes to the membranes of liquid‐core capsules and the ability to extract hydrophobic products of the reaction within the capsule core. The lipase from Candida rugosa was immobilized to the microcapsules by adsorption and by covalent binding through activation with glutaraldehyde. In both cases improved temperature and operational stability were achieved. Both types of immobilization resulted in a basic shift of the pH optimum for activity, from 7.5 to 9.0. The presence of an organic phase within the capsule core allowed direct product separation and lead to a decrease in product inhibition of the lipase‐catalyzed reaction. © 2005 Wiley Periodicals, Inc.