Figure 2.
Luminescent response of strain E. coli MG1655 (pKatG’::lux) to hydrogen peroxide (A), (−)-limonene (B), and (+)-α-pinene (C). Time course of mean values of light emission (in RLU) in the presence of different chemical concentrations (A,B): (◆) 0 μM (black diamond—Control), (◼) 1 μM (gray square), (▲) 5 μM (dark triangle), (×) 25 μM (black cross), (🞶) 50 μM (gray asterisk), and (⬤) 100 μM (light circle); (C): (◆) 0 μM (black diamond—control), (◼) 5 μM (light square), (▲) 50 μM (gray triangle), (⬤) 100 μM (black circle).