Kinetic Hydrolysis of Cellulose Biopolymer by Carbon Nanotubes Immobilized Cellulase

Authors

  • Nurul Dayana Azmi Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Wilayah Persekutuan, Malaysia
  • Muhammad Naziz Saat School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Allam, Selangor, Malaysia
  • Mohamad Suffian Mohamad Annuar Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Wilayah Persekutuan, Malaysia

DOI:

https://doi.org/10.37934/araset.30.3.325333

Keywords:

Cellulase, Carbon-Nanotubes, Carboxymethyl-Cellulose, kinetics, viscosity

Abstract

Immobilized enzymes are widely used in various biochemical reactions due to higher stability and reusability. Immobilization enzyme is a process of confinement enzyme molecules onto/within a support or matrix material via the chemical or physical process. In this study, the effect of free and CNT-Immobilized cellulase was investigated for hydrolysis of different CMC concentrations. The effect of free and CNT-Immobilized cellulase on the kinetic parameters Vmax and Km in the CMC hydrolysis was compared. The maximum reaction velocity Vmax of CNT-Immobilized cellulase is similar to free cellulase which indicates cellulase adsorption in CNT is effective in hydrolyzing CMC. However, the observed Km values for CNT-Immobilized cellulase is higher than free cellulase for different CMC concentrations. The Km value for CNT-Immobilized shows a sharp decrease in substrate affinity as compared to free cellulase due to diffusional restrictions by the CNT matrix. In addition, the initial velocity (V0) of CMC hydrolysis by CNT-Immobilized cellulase shows similar increasing pattern with the increase of reaction mixture viscosity. The current preparation of CNT-Immobilized cellulase have almost the same catalytic reaction in CMC hydrolysis as free cellulase. Thus, the current preparation of CNT-Immobilized has significant potential for green and sustainable biocatalyst in cellulose-based biopolymer hydrolysis reaction.

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Author Biographies

Nurul Dayana Azmi, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Wilayah Persekutuan, Malaysia

nuruldiyana704@gmail.com

Muhammad Naziz Saat, School of Biology, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Allam, Selangor, Malaysia

naziz@uitm.edu.my

Mohamad Suffian Mohamad Annuar, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Wilayah Persekutuan, Malaysia

suffian72@gmail.com

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Published

2023-06-01

How to Cite

Nurul Dayana Azmi, Muhammad Naziz Saat, & Mohamad Suffian Mohamad Annuar. (2023). Kinetic Hydrolysis of Cellulose Biopolymer by Carbon Nanotubes Immobilized Cellulase. Journal of Advanced Research in Applied Sciences and Engineering Technology, 30(3), 325–333. https://doi.org/10.37934/araset.30.3.325333

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Articles