Volume 1, Issue 4 (9-2016)                   jhehp 2016, 1(4): 183-188 | Back to browse issues page

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Mohammadi J, Mohammadi M, Mehrasbi M R, Peyda M. Investigation of Enzyme Immobilization Effects on its Characteristics. jhehp 2016; 1 (4) :183-188
URL: http://jhehp.zums.ac.ir/article-1-55-en.html
Investigation of Enzyme Immobilization Effects on its Characteristics
Javad Mohammadi1 , Mehdi Mohammadi2 , Mohammad Reza Mehrasbi *3 , Mazyar Peyda3
1- Department of Environmental Health Engineering, School of Public Health, Zanjan University of Medical Sciences, Zanjan ,Iran.
2- National Institute of Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran.
3- Department of Environmental Health Engineering, School of Public Health, Zanjan University of Medical Sciences, Zanjan ,Iran
Abstract:   (10827 Views)

Background; Enzymes are well known as sensitive catalysts in the laboratory and industrial scale. To improve their properties and for using their significant potential in various reactions as a useful catalyst the stability of enzymes can often require improvement. Enzymes Immobilization on solid supports such as epoxy- functionalized ferric silica nanocomposite can be effective way to improve their characteristics.
Methods; In this study silica coated magnetite nanoparticles were Functionalized with GPTSM as a linker, then immobilization reaction performed by using  various amounts of lipase B from Candida Antarctica (CALB), for the next step immobilization effects on thermal stability and optimum pH were investigated in comparison with free CALB.
Results; Results illustrated enzyme was successfully immobilized on nano particles and immobilized derivative retains 100% of its activity by 55°C while free CALB loss its activity at the same condition.
Conclusion; Immobilization of CALB on Fe3O4@SiO2 particles resulted in significant improvements in its characteristics such as thermal stability and methanol tolerance compared to the free CALB.

Keywords: Immobilization, Candida antarctica lipase B, Silica nanocomposite magnetite
Full-Text [PDF 505 kb]   (9015 Downloads)    
Type of Study: Original Article | Subject: Environmental Health, Sciences, and Engineering
Received: 2016/05/19 | Accepted: 2016/07/23 | Published: 2016/09/20
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