METHOD FOR CHARACTERIZING INTERACTION FORCE BETWEEN LIGNIN AND CELLULASE
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United States of America
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Issued Date -
Apr 3, 2025
app pub date -
Aug 31, 2023
filing date -
Aug 31, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A method for characterizing the interaction force between lignin and cellulase is provided. The method includes the following steps: (1) preparation of lignin film: preparing a lignin solution, then dropwise adding the solution onto a silicon wafer, repeatedly spin-coating with a spin coater, and vacuum-drying the prepared lignin film; (2) AFM probe modification: modifying an AFM probe coated with a gold film on the surface with HS-PEG-COOH and then activating the carboxyl group, immersing the AFM probe after the carboxyl group activation in a PBS solution of cellulase for incubation, and after the modification is completed, placing the washed AFM probe in a PBS buffer solution for storage for later use; (3) testing the lignin-cellulase interaction force by using an AFM instrument in a liquid phase environment. AFM is used to quantitatively characterize the interaction between the cellulase and lignin in a liquid environment.
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