
Keywords: APTES; 3-aminopropyltriethoxysilane); SiO2; silica; MNPs; magnetite nanoparticles; CRL; Candida rugosa lipase; OPL; oil palm leaves; RA; recovery activity; IP; immobilized protein; IY; immobilization yield; TEOS; tetraethyl orthosilane; CRL/Gl-A-SiO2-MNPs