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Table 1 Halo measurement of antimicrobial activity of amazonian plant aqueous extracts

From: Antimicrobial activity of amazonian medicinal plants

Botanical extract Gram positive bacteria Median and Standard deviation (halo size)
Symphonia globulifera Staphylococcus aureus 3.66 mm ± 0.76
Vatairea guianensis 4.0 mm ± 0.5
Hymenelobium petraeum 3.66 mm ± 0.57
Ciprofloxacin 9 mm ± 0
  Gram negative bacteria  
Hymenelobium petraeum Salmonella enterica ser. Typhi 7 mm ± 0.26
Ciprofloxacin 10 mm ± 0
Hymenelobium petraeum Enterococcus faecalis 5 mm ± 0.1
Ciprofloxacin 11 mm ± 0
Pentaclethra macrolaba Klebsiella ozanae 3.96 mm ± 0.15
Ptychopetalum olacoides 9,25 mm ± 0.35
Ciprofloxacin 8 mm ± 1.4
Pentaclethra macrolaba Acinetobacter baumannii 5.76 mm ± 0.25
Ptychopetalum olacoides 4.9 mm ± 0.14
Ciprofloxacin 11 mm ± 0
  Yeast  
Hymenelobium petraeum Candida albicans 11.9 mm ± 0.1
Ciprofloxacin   13.63 mm ± 0.32