期刊
COLLOID AND POLYMER SCIENCE
卷 282, 期 1, 页码 76-83出版社
SPRINGER-VERLAG
DOI: 10.1007/s00396-003-0921-2
关键词
interpenetrating polymer network; alpha-amylase; immobilization; kinetics
Semi-interpenetrating polymer networks (IPNs) of poly(ethylene glycol), poly(vinyl alcohol) and polyacrylamide were prepared as a support for enzyme immobilization and kinetic studies were performed for the immobilization of alpha-amylase. The effect of IPN composition on the extent of immobilization was investigated and the percentage of relative activity of the immobilized enzyme was evaluated as a function of the chemical architecture of the IPNs, pH and temperature, taking starch as a substrate. The kinetic constants and the maximum reaction velocity were also evaluated. The IPNs were characterized by IR spectral analysis.
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