Study on Antibacterial Activity of Sichuan RADIX SCROPHULARIAE Extracts
JING Juan et al(School of Life Science and Engineering,Southwest Jiaotong Universty,Chengdu,Sichuan 610031)
[Objective] To study the antibacterial activities of RADIX SCROPHULARIAE extracts extracted with different solvents.[Method] The antibacterial activities of the extracts were measured with the filter paper method and serial dilution method.[Result] None of the extracts had inhibitory effect on Aerogenes.Extracts with the solvents of petroleum ether,chlorofom and ethyl acetate had certain inhibitory effect on Escherichia coli,Staphylococcus aureus,Bacillus cereus and Bacillus subtilis,and the best inhibition was from chloroform.But extracts from n-butanol and water had no inhibitory effect on these bacteria.[Conclusion] The crude extracts from RADIX SCROPHULARIAE have good antibacterial activity.