| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Immobilization of Laccases on ZnO and CuO Nanoparticles and the Effect of Copper Ions on Their Stability and Catalytic Activity |
| Author(s) |
F. Javier Suarez, Eesa Khan, Rafael Vazquez-Duhalt, Olivia A. Graeve |
| On-Site Speaker (Planned) |
F. Javier Suarez |
| Abstract Scope |
Laccases are enzymes capable of oxidizing a large variety of organic compounds, including textile dyes for water bioremediation applications. However, laccases show low stability under industrial conditions that decrease their applicability. Laccase immobilization is a good methodology that can be used to increase their stability and catalytic activity. In this study we immobilized <i>Coriolopsis gallica</i> laccases on copper oxide nanoparticles and zinc oxide nanoparticles by covalent attachment. The activity of the immobilized laccase on the nanoparticles was measured using UV-Vis spectroscopy. The results demonstrate a decrease in the catalytic activity of laccase on the ZnO nanoparticles, while exhibiting an increase on the CuO nanoparticles, as compared to the free laccase. Inductively coupled plasma mass spectrometry showed a direct relationship between the stability of laccase and the release of copper ions by the CuO nanoparticles. This study is important to understand the role of CuO nanoparticles in the stability of laccases. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Electronic Materials, Powder Materials |