Figure 1From: Recombinant bromelain production in Escherichia coli: process optimization in shake flask culture by response surface methodologyEffects of different cell concentrations on bromelain activity by BL21-AI. Tests were carried out at varying cell concentrations (OD600 nm of 0.4-0.8), while temperature of 37°C, 0.2% (w/v) L-arabinose and 4 hr post-induction period were kept constant.Back to article page