In this work NADH-cytochrome b5 reductase enzyme (EC 1.6.2.2) obtained
from rabbit liver microsomes was immobilized into gelatin by crosslin
king. Chromium (III) acetate and chromium (III) sulfate were used as c
rosslinkers. To find the most suitable immobilization parameters; effe
ct of crosslinker, enzyme and gelatin concentrations on immobilized en
zyme activity were investigated. Unbounded enzyme was determined by wa
shing experiments.