کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1429932 | 987190 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Enzyme activity of horseradish peroxidase immobilized in chitosan matrices in alternated layers Enzyme activity of horseradish peroxidase immobilized in chitosan matrices in alternated layers](/preview/png/1429932.png)
The successful immobilization of enzymes such as horseradish peroxidase (HRP) in solid films is essential for applications in sensors and for fundamental studies aimed at identifying possible biotechnological devices. In this study we show that HRP can be immobilized in alternated layers with chitosan as the template material. The activity of HRP in HRP/chitosan films was preserved for several weeks, and could be detected optically upon monitoring the reaction with pyrogallol. The morphology of the film displayed stripes that disappeared after reaction with pyrogallol. Though the activity in the HRP/chitosan film was lower than in a homogeneous solution or in an LB film investigated earlier, the response was linear for a considerable period of time, which may be advantageous for sensing hydrogen peroxide.
Journal: Materials Science and Engineering: C - Volume 29, Issue 6, 1 August 2009, Pages 1889–1892