Fig. 8.

Food decontamination model trails based on dual‐PS‐mediated aPDI.

A. Viable number of S. aureus in apple slice treated with 100 nM HB and curcumin photoactivated by 9 J cm^‐2 of LED light with wavelength of 460 nm. The treated apple was placed at room temperature for 2 h before bacterial enumeration. The data were normalized against the sham control group (S‐L‒). Representative apple slices without dish covers were shown in inserts.

B. pH values of apple slices in the presence or absence of photodynamic treatment.

C. Total phenol content of apple slices in the presence or absence of photodynamic treatment. S‐L‒, no PS and light; S‐L+, no PS, with light illumination; S + L‒, with PS, no light illumination; S + L+, with PS and light. Values represent averages of at least triplicate data, and error bars indicate the standard deviation. **P < 0.01.

D. Schematic representation of dual‐PS‐mediated aPDI against S. aureus and its application in apple maintenance.