Publications by authors named "Mei-Zhi Zheng"
This study reported for the first time that Ascorbic acid (AA) could appreciably boost the efficiency of Octyl gallate (OG)-mediated photodynamic inactivation (PDI) on Escherichia coli and Staphylococcus aureus in planktonic and biofilm states. The combination of OG (0.075 mM) and AA (200 mM) with 420 nm blue light (212 mW/cm) led to a >6 Log killing within only 5 min for E.
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- Photodynamic inactivation (PDI) combined with potassium iodide (KI) and octyl gallate (OG) shows significant promise for improving water sterilization by effectively killing bacteria and biofilms when exposed to blue light.
- The study demonstrated that using 0.15 mM OG with 250 mM KI resulted in complete sterilization within 5 minutes, while lower concentrations still effectively eradicated biofilms in 10 minutes.
- The mechanism of this enhanced efficiency involves the rapid generation of reactive oxygen species and other substances that damage bacterial cell structures and disrupt their communication, leading to a highly effective sterilization process.