A method of producing nanobiocatalysts includes: suspending a support material in a liquid medium; functionalizing a surface of the support material by mixing the suspended support material with a functionalizer for a first predefined time at a first predefined temperature, wherein a first broth results; applying a protein directly in the first broth after the first predefined time; mixing the protein with the first broth and incubating the protein for a second predefined time at a second predefined temperature, wherein a second broth results; immobilizing the incubated protein onto the functionalized surface of the support material, wherein a third broth results; filtering the third broth; and gathering a retentate of the filtering. By directly processing the first and second broths allows for providing a continuous process and production of the nanobiocatalysts, which can be optimized regarding time, water, chemical and energy consumption. Also, problems related to thixotrophy can be minimized.