Alcohol determination via covalent enzyme immobilization on magnetic beads
Yükleniyor...
Tarih
2008
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Sa
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Alcohol oxidase was covalently immobilized onto magnetic beads of two different sizes, 75-150 mu m and 50-75 mu m in diameter, fabricated in the presence of glycidylmethacrylate and methylmethacrylate via suspension polymerization in the presence of a cross-linker (i.e., ethylenedimethylmethacrylate). The activity of the enzyme on smaller microspheres was found to be almost 4.8 fold higher than that of the larger counterparts. Although enzyme loading was same for both fractions, activity and the affinity of immobilized enzyme were significantly altered. The effects of various parameters such as temperature, pH, operational and storage stability were examined. The substantial change in the activity of enzyme was also observed in stability experiments in favor of large size magnetic beads. For all stability experiments including storage stability, the 75-150 mu m fraction was found to be more sentinel support for the enzyme. (C) 2007 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
magnetic beads, enzyme immobilization, alcohol oxidase, kinetic parameters, stability
Kaynak
Sensors And Actuators B-Chemical
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
128
Sayı
2
Künye
closedAccess
