Abstract
In this study, a new matrix for immobilization of acetylcholinesterase was investigated by using alginate and κ-carrageenan. The effects of pH, temperature, storage and thermal stability on the free and immobilized acetylcholinesterase activity were examined. Maximum reaction rate ( V max) and Michaelis–Menten constant ( K m) was also investigated for free and immobilized enzymes. For free and immobilized enzymes into Ca-alginate and alginate/κ-carrageenan polymer blends, optimum pH and temperature was found to be 7 and 30 °C, respectively. For free enzyme, maximum reaction rate ( V max) and Michaelis–Menten constant ( K m) values were found to be 6.35 mM and 50 mM min −1, respectively, the same values for immobilized enzymes were determined as 8.68, 12.7 mM and 39.7, 52.9 mM min −1, respectively. Storage and thermal stability of acetylcholinesterase was increased by as a result of immobilization.
Published Version
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