Fig. 5From: Efficient ammonia production from food by-products by engineered Escherichia coliAmmonia production from pretreated okara by engineered E. coli strains. Ammonia was produced by incubating cells in the pretreated okara solution at 37 °C for 26.5 h. Values are expressed as the mean ± SD (n = 3). Statistical significance was determined by Tukey’s test (*P < 0.0001)Back to article page