Abstract: The antibacterial effects of Chinese wild blueberries extracts on 4 pathogenic bacteria, Pseudomonas aeruginosa, Listeria monocytogenes, Staphylococcus aureus and Vibrio parahaemolyticus, were investigated.The testing tube double dilution method and the spread plate method were used to determine minimal inhibitory concentration (MIC) and minimum bactericidal concentration (MBC).The results showed that Chinese wild blueberry extracts had antibacterial effects on four investigated pathogenic bacteria.The MIC of wild blueberry extracts against P.aeruginosa, L.monocytogenes, S.aureus and V.parahaemolyticus were 62.5,250,500 mg/mL and 31.25 mg/mL,respectively.The MBC of wild blueberry extracts against P.aeruginosa, L.monocytogenes, S.aureus, and V.parahaemolyticus were 250,250,500 mg/mL and 125mg/mL,respectively.This was the first study that chinese wild blueberry has antibacteridal effects the antibacterial effects of Chinese on the four pathogenic bacteria.The results will benefit future application of Chinese wild blueberry.

Key words: wild blueberries, extracts, antibacterial effects, double dilution method