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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.