Figure 4From: Recombinant bromelain production in Escherichia coli: process optimization in shake flask culture by response surface methodologyEffects of different post-induction period (2-10 hr) on bromelain activity by BL21-AI. Experiments were conducted at OD600 nm of 0.4, 37°C and 0.2% (w/v) L-arabinose.Back to article page