Fig. 7From: An Arthrobacter citreus strain suitable for degrading ε-caprolactam in polyamide waste and accumulation of glutamic acidUtilisation of caprolactam by A. citreus in media with different phosphate concentration. The basal synthetic media contained caprolactam and inorganic phosphate salts to attain C:P of 100:3 (Normal P; NP), 100:0.3 (1/10 NP), 100:0.06 (1/50 NP), 100:0.006 (1/500NP)Back to article page