Shin’iseihaito (Xinyiqingfeitang) Suppresses the Biofilm Formation of Streptococcus pneumoniae In Vitro

Figure 3

SSHT inhibits the biofilm formation of other five cps types of S. pneumoniae. Five different strains of S. pneumoniae were treated with or without SSHT (500 µg/mL) for 2 days, and its antibiofilm activity was quantified by crystal violet adsorption by measuring the absorbance at 570 nm. Data shown represent the mean ± SD (). . The cps types of these S. pneumoniae were as follows: NCU1 cps4; NCU3 cps14; NCU5 cps6ABC; NCU9 cps 9; NCU12 cps 19A. SSHT: Shin’iseihaito extract.