Growth kinetics of different Gram-negative (A) and Gram-positive (B) bacterial strains in presence of the regular coffee extract. Bacterial suspensions of 10
6
cells ml
1
were
grown for 4 h (A) or 8 h (B) in absence (solid line) or in presence (dashed line) of the extract and the OD620was recorded every 10 min (A) or 30 min (B). Results are the mean of
three independent experiments±SD