The bicinchoninic acid (BCA) assay was conducted to assess the amount of protein leakage after the disinfection treatment [18 (link)]. After undergoing UV irradiation, exposure to an electric field, and combined disinfection methods, the agar blocks were subjected to elution in 10 mL of PBS. Subsequently, 1 mL of the eluent was transferred into a tube and centrifuged at a speed of 8000 rpm for 5 min. The BCA assay was performed according to the protocol provided with the kit.
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