Bacteriostatic Action of Piqin Granules Against Staphylococcus Aureus and Propionibacterium Acnes in Vitro

OBJECTIVE To study effect of Piqin granules on bacteriostatic action against Staphylococcus aureus and Propionibacterium acnes in vitro. METHODS The effect on bacteriostatic action against Staphylococcus aureus and Propionibacterium acnes were cultured by plating method and oxfordcup, and then by test tube continuously dilution in order to observe their minimal inhibitory concentration(MIC). RESULTS Piqin granules were highly sensitive to Staphylococcus aureus and Propionibacterium acnes in vitro. The MIC was 0.05 g·mL^-1 against Staphylococcus aureus; and the MIC was 0.10 g·mL^-1 against Propionibacterium acnes. CONCLUSION Piqin granules show satisfactory bacteriostatic action against the Staphylococcus aureus and Propionibacterium acnes.