Figure 2.

Shrinkage and damage of S. aureus (A) and P. acnes (B) after treatment with four hydrolysable tannins isolated from pomegranate extract (PG-E): punicalagin (1), punicalin (2), strictinin A (3), and granatin B (4); All photos were taken with scanning electron microscopy; C: control group; The concentration of 1 to 4 was 100 µg/mL; Data are from three separate experiments, the picture of one of which is shown; The arrow indicates a disruption site of bacteria; Scale bar of control group is 5 µm; Scale bar of four hydrolysable tannins against S. aureus and P. acnes is 5 µm and 2 µm, respectively.