| Abstract: | Objective] To research the antibacterial activities of different solvent fractions of Lysionotus paucifloru.Methods] Microbial sensitivity test in vitro was used to detect the antibacterial effects in vitro of different solvent fractions of L.pauciflorus.Results] n-butanol had inhibitory effects on Escherichia coli.,Staphylococcus aureus and Pasteurella multocida.Among them,its inhibitory effects on E.coli was the most significant,the inhibitory zone diameter and the minimum inhibitory concentration were 10.39 mm and 3.2 mg/mL,respectively.Ethyl acetate fraction had antibacterial effects on all tested strains,especially on S.aureus.Its inhibitory zone diameter and the minimum inhibitory concentration were 12.31 mm and 0.8 mg/mL,respectively.However,Petroleum ether had relatively weak inhibitory effects on S.aureus.Water fraction had certain inhibitory effects on E.coli and P.multocida,but showed no inhibitory effects on other bacteria.Conclusions] The antibacterial fractions of L.pauciflorus were mainly n-butanol and petroleum ether. |
