immobilized aspergillus niger lipase with sio2 nanoparticles in sol-gel materials

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ID: 260361
2016
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Abstract
Lipase from Aspergillus niger was “doubly immobilized” with SiO2 nanoparticles in sol-gel powders prepared via the base-catalyzed polymerization of tetramethoxysilane (TMOS) and methyltreimethoxysilane (MTMS). The hydrolytic activity of the immobilized lipase was measured using the p-nitrophenyl palmitate hydrolysis method. The results showed that the optimum preparation conditions for the gels were made using a MTMS/TMOS molar ratio of 5, 60 mg of SiO2 nanoparticles, a water/silane molar ratio of 12, 120 mg of enzyme supply, and 120 μL of PEG400. Under the optimal conditions, the immobilized lipase retained 92% of the loading protein and 94% of the total enzyme activity. Characteristic tests indicated that the immobilized lipase exhibited much higher thermal and pH stability than its free form, which shows great potential for industrial applications.
Reference Key
xu2016catalystsimmobilized Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Li Xu;Caixia Ke;Ying Huang;Yunjun Yan
Journal journal of essential oil research
Year 2016
DOI
10.3390/catal6100149
URL
http://www.mdpi.com/2073-4344/6/10/149
Keywords
lipase immobilization sol-gel stabilitychemical technologychemistry

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