竹荪不同部位抑菌效果的研究

AbstractIn this paper,the antibacterial activities of ethyl acetate extracts from differentparts of Dictyophora indusiata such as fungus skirt,fungus stem,fungus cover and v-olva were studied.Taking Escherichia coli,staphylococcus aureus and salmonella asexperimental strains,the bacteriostatic effect was evaluated by the plate punching m-ethod and the diameter of bacteriostatic circle as measurement index.The minimuminhibitory concentration(MIC)of extracts from different parts of Dictyophora indusi-ata was determined by continuous multiple dilution method,and the antibacterial eff-ects of the four parts were compared.The results are as follows:(1)The antibacterialeffect of Dictyophora indusiata stipe extract is the best among the four parts,MIC va-lues for Escherichia coli,Staphylococcus aureus and Salmonella are all 25mg/ml,andthe inhibitory effect on Staphylococcus aureus is the best.(2)The extract of Dictyop-hora indusiata maxim maximmaxim has the best antibacterial effect on Escherichiacoli,MIC value is 50mg/ml;(3)The extract of Dictyophora indusiata cap has the b-est antibacterial effect on Salmonella,MIC value is 25 mg/mL;(4)The extract of Dc-tyophora indusiata volva has good antibacterial effect on Staphylococcus aureus andSalmonella,MIC values are 50mg/ml.Keywords:Dictyophora indusiata;Ethyl acetateextract;Diameter of bacteriostatic ci-rcle;Minimum inhibitory concentratio