The antibacterial activity of extract and isolated major alkaloids (berberine, beta -hydrastine, canadine and canadaline) of Hydrostis conadensis L. (Ranunculaceae) was evaluated against 6 strains of microorganism: Staphylococcus aureus (ATCC 25993 and ATCC 6538P), Streptococcus sanguis (ATCC 10 556), Escherichia coli (ATCC 25 922), Pseudomonas aeruginosa (ATCC 27853). Bactericidal activity was evaluated by contact test by measuring the "killing time" on a low density bacterial inoculum, and bacteriostatic activity in liquid medium by M.I.C. values. The results provide a rational basis for the traditional antibacterial use of Hydrastis canadensis.
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Lakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, CanadaLakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Coccimiglio, John
Alipour, Misagh
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Univ Alberta, Dept Pediat, Fac Med & Dent, Edmonton, AB, CanadaLakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Alipour, Misagh
Jiang, Zi-Hua
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Lakehead Univ, Dept Chem, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, CanadaLakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Jiang, Zi-Hua
Gottardo, Christine
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Lakehead Univ, Dept Chem, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, CanadaLakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Gottardo, Christine
Suntres, Zacharias
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Lakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Lakehead Univ, Dept Chem, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada
Lakehead Univ, Northern Ontario Sch Med, Div Med Sci, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, CanadaLakehead Univ, Dept Biol, 955 Oliver Rd, Thunder Bay, ON P7B 5E1, Canada