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- W3115827981 abstract "β-glucosidase (BglA) immobilization from Thermotoga maritima on magnetic nanoparticles (MNPs) functionalized with chitosan (Cs) were efficiently investigated to improve lactose conversion and galactooligosaccharides (GOS) production. We used a batch method in order to improve the conversion of lactose to GOS. The efficiency and yield of immobilization were 79% and immobilized BglA was effectively recycled via a magnetic separation procedure through a batch-wise GOS with no activity lessening. Furthermore, analyses were done through screening kinetics of enzyme activity, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), Fourier transform infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM). Proposed methodology of immobilization shows a potential application as it is stable which was proved through many methods including pH, temperature, heat treatment, storage, and kinetics of the enzyme. GOS and residual enzyme activity showed to be 28.76 and 40.44%, respectively. However, free enzyme synthesis of GOS yield was just 24% after 12 hr. This study proposed applying magnet in the immobilization process of BglA on Cs-MNPs to produce GOS as new method for immobilizing enzyme in a biostable and cost-efficient way. PRACTICAL APPLICATIONS: This paper focus on immobilization of BglA from T. maritima onto MNPs functionalized with CS to investigate their further possibility improving lactose conversion and GOS production. Interestingly, a successful immobilization of Tm-BglA on the substrates were achieved in Cs-MNPs. The obtained results from enzyme activity, SDS-PAGE, FT-IR, and TEM showed that the high binding capacity of BglA to Cs-MNPs was successfully obtained. Furthermore, the binding efficiency calculation indicated that the immobilized BglA-Cs-MNPs conserved 40.44% of its native activity at the end of its 6th repeated use. In addition, magnetic separation technique was successfully employed for reuse of the immobilized BglA for repetitive batch-wise GOS without significant loss of activity." @default.
- W3115827981 created "2021-01-05" @default.
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- W3115827981 date "2020-12-23" @default.
- W3115827981 modified "2023-10-18" @default.
- W3115827981 title "Large batch production of Galactooligosaccharides using β‐glucosidase immobilized on chitosan‐functionalized magnetic nanoparticle" @default.
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- W3115827981 doi "https://doi.org/10.1111/jfbc.13589" @default.
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