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Study on Effective Composition Analysis and Antibacterial Effects of Herb Polygonum perfoliatum

FU Ya-xiang,HE Xiang-rong,LI Jun-chao,LIU Xiang-xin(College of Veterinary Medicine,Hunan Agricultural University,Changsha,Hunan,410128,China)  
Test tube method and circular filtering method were used to identify the chemical compotion of herb Polygonum perfoliatum.The results showed that it contains phenolic compound,organic acid,alkaloid,amino acids,saponin,tannin,flavone and flavonoids,anthraquinone and glycoside,cardiotonic glycoside,sugar,plant sterol,triterpenes and so on.The antibacterial experiment in vitro of herb Polygonum perfoliatum water extracts was investigated by tube dilution method and filter-paper method.The results demonstrated that water extracts from herb Polygonum perfoliatum had stronger bacteriostatic effects to Staphylococcus aureus,Pasteurella,Streptococcus,Salmonella and E.coli,the diameters of bacteriostatic ring to various pathogenic bacteria were 21.86 mm±0.83 mm,13.28 mm±0.46 mm,18.46 mm±0.73 mm,15.67 mm±0.31 mm,17.69 mm±0.56 mm,respectively.MICs were 0.031,0.25,0.063,0.125,0.063 g/mL,respectively.MBCs were 0.031,0.5,0.063,0.25,0.125 g/mL,respectively.
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