Immobilized lipase-catalysed esterification and transesterification reactions in non-aqueous media for the synthesis of tetrahydrofurfuryl butyrate: comparison and kinetic modeling

2004 ◽  
Vol 59 (2) ◽  
pp. 373-383 ◽  
Author(s):  
Ganapati D. Yadav ◽  
K.Manjula Devi
Keyword(s):  
Kinetic Modeling ◽  
Immobilized Lipase ◽  
Aqueous Media

scholarly journals Development of Effective Lipase-Hybrid Nanoflowers Enriched with Carbon and Magnetic Nanomaterials for Biocatalytic Transformations

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 808 ◽  
Author(s):  
Renia Fotiadou ◽  
Michaela Patila ◽  
Mohamed Amen Hammami ◽  
Apostolos Enotiadis ◽  
Dimitrios Moschovas ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Immobilized Lipase ◽  
Aqueous Media ◽  
Deep Eutectic Solvents ◽  
Operational Stability ◽  
Magnetic Nanomaterials ◽  
Energy Dispersion Spectroscopy ◽  
Simple Method ◽  
Pseudozyma Antarctica ◽  
Carbon Based Nanomaterials

In the present study, hybrid nanoflowers (HNFs) based on copper (II) or manganese (II) ions were prepared by a simple method and used as nanosupports for the development of effective nanobiocatalysts through the immobilization of lipase B from Pseudozyma antarctica. The hybrid nanobiocatalysts were characterized by various techniques including scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), X-ray diffraction (XRD), Raman spectroscopy, and Fourier transform infrared spectroscopy (FTIR). The effect of the addition of carbon-based nanomaterials, namely graphene oxide and carbon nanotubes, as well as magnetic nanoparticles such as maghemite, on the structure, catalytic activity, and operational stability of the hybrid nanobiocatalysts was also investigated. In all cases, the addition of nanomaterials during the preparation of HNFs increased the catalytic activity and the operational stability of the immobilized biocatalyst. Lipase-based magnetic nanoflowers were effectively applied for the synthesis of tyrosol esters in non-aqueous media, such as organic solvents, ionic liquids, and environmental friendly deep eutectic solvents. In such media, the immobilized lipase preserved almost 100% of its initial activity after eight successive catalytic cycles, indicating that these hybrid magnetic nanoflowers can be applied for the development of efficient nanobiocatalytic systems.

Kinetic Modeling Characterization of Cellulose Modified Surface for Methylene Blue Removal from Aqueous Media

2021 ◽  
Vol 397 (1) ◽  
pp. 2000239
Author(s):  
Siti Maizatul Ameera Azhar ◽  
Ahmad Salihin Samsudin ◽  
Wan Norfazilah Wan Ismail ◽  
Nurlin Abu Samah
Keyword(s):  
Methylene Blue ◽  
Kinetic Modeling ◽  
Aqueous Media ◽  
Methylene Blue Removal ◽  
Modified Surface
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