Abstract: At first,optimum degree of dilution of Escherichia coli,Staphylococcus aureus and Aspergillus flavus were determined,which are 10⁷,10⁵ and 10⁵ times, respectively.Then minimum inhibitory concentration(MIC) and minimum bactericidal concentration (MBC)of bamboo vinegar against food-plluting bacteria were studied.The experimental result indicated that the bacteriostatic action of bamboo vinegar is the strongest against A. flavus,then is E. coli,the weakest is against S. aureus.The MIC are 7.5,25 and 30 μL/mL,respectively.The MBC are 10,30 and 35 μL/mL,respectively.

Key words: bamboo vinegar, food-polluting bacteria, minimum inhibitory concentration, minimum bactericidal concentration, bacteriostatic circle