Lipase From Rhizomucor miehei Immobilized on Magnetic Nanoparticles: Performance in Fatty Acid Ethyl Ester (FAEE) Optimized Production by the Taguchi Method

Frontiers in Bioengineering and Biotechnology
Katerine S MoreiraJosé C S Dos Santos

Abstract

In this communication, it was evaluated the production of fatty acid ethyl ester (FAAE) from the free fatty acids of babassu oil catalyzed by lipase from Rhizomucor miehei (RML) immobilized on magnetic nanoparticles (MNP) coated with 3-aminopropyltriethoxysilane (APTES), Fe3O4@APTES-RML or RML-MNP for short. MNPs were prepared by co-precipitation coated with 3-aminopropyltriethoxysilane and used as a support to immobilize RML (immobilization yield: 94.7 ± 1.0%; biocatalyst activity: 341.3 ± 1.2 U p -NPB/g), which were also activated with glutaraldehyde and then used to immobilize RML (immobilization yield: 91.9 ± 0.2%; biocatalyst activity: 199.6 ± 3.5 U p -NPB/g). RML-MNP was characterized by X-Ray Powder Diffraction (XRPD), Fourier Transform-Infrared (FTIR) spectroscopy and Scanning Electron Microscope (SEM), proving the incorporation and immobilization of RML on the APTES matrix. In addition, the immobilized biocatalyst presented at 60°C a half-life 16-19 times greater than that of the soluble lipase in the pH range 5-10. RML and RML-MNP showed higher activity at pH 7; the immobilized enzyme was more active than the free enzyme in the pH range (5-10) analyzed. For the production of fatty acid ethyl ester, under optimal con...Continue Reading

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Citations

Nov 25, 2020·International Journal of Biological Macromolecules·Zahra AshkanAmin Tashakor
Jan 17, 2021·International Journal of Biological Macromolecules·Soudabeh FarhadiMojtaba Mortazavi
Apr 18, 2021·International Journal of Biological Macromolecules·Yale Luck NunesJosé C S Dos Santos
Jul 17, 2021·Bioprocess and Biosystems Engineering·Nur Sulihatimarsyila Abd WaftiSuraini Abdul Aziz

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