Fig. 4From: Enhanced production of ectoine from methane using metabolically engineered Methylomicrobium alcaliphilum 20ZEffect of tungsten (W) addition on cell growth and ectoine production in M. alcaliphilum 20ZDP. Time course of the biomass (dry cell weight; DCW), ectoine, and hydroxyectoine production from methane by M. alcaliphilum 20ZDP cultivated in W-free medium (a) and in W-added medium (b), respectively. The following symbols were used: DCW (●), ectoine (▲), and hydroxyectoine (X). All experiments were performed in triplicate and the range of the raw data was within ± 5% of the averageBack to article page