Figure 2.

Production of violacein by Chromobacterium violaceum CV026 in the presence of compounds (9, 10, 11, 12, and 14 at 1, 10, and 100 µM). The specific production of violacein was determined by the ratio of detectable pigment (OD₅₇₇) per amount bacteria (OD₇₂₀). The data were normalized on the untreated violacein production of the culture. Experiments were performed as duplicates. Compound number (Cpd No.).