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Table 1 Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values of the ethanolic extract of geopropolis (EEGP) and its fractions (hexane – HF; chloroform – CF; ethyl acetate – EAF) against the tested microorganisms (values in μg/mL)

From: Antimicrobial and antiproliferative activities of stingless bee Melipona scutellaris geopropolis

Microorganism EEGP HF CF EAF
  MIC MBC MIC MBC MIC MBC MIC MBC
Streptococcus mutans UA 159 25–50 a 6.25–12.5 800–1600 25–50 a a a
Staphylococcus aureus ATCC 25923 6.25–12.5 25–50 6.25–12.5 25–50 12.5–25 50–100 50–100 100–200
Staphylococcus aureus ATCC 33592 (MRSA) 6.25–12.5 25–50 12.5–25 25–50 6.25–12.5 25–50 25–50 50–100
Enterococcus faecalis ATCC 29212 800–1600 a 100–200 800–1600 400–800 a 400–800 a
Actinomyces naeslundii m104 800–1600 a 200–400 800–1600 400–800 a 400–800 a
Pseudomonas aeruginosa ATCC 25619 a a a a a a a a
  1. a Value > 1600 μg/mL.