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Table 1 Comparison of γ-PGA production in Bacillus with glutamate-independent

From: Production of poly-γ-glutamic acid by a thermotolerant glutamate-independent strain and comparative analysis of the glutamate dependent difference

Strains Medium components Fermentation conditions Yield (g/L) Conversion efficiency (%)a References
Carbon source Nitrogen source Bioreactor Temperature (°C) Time (h)
B. amyloliquefaciens LL3 Sucrose (50 g/L) (NH4)2SO4 (2 g/L) 200 L 37 44 4.4 8.80 Cao et al. (2011)
B. licheniformis A35 Glucose (75 g/L) NH4C1 (18 g/L) Flask 30 120 12.0 16.00 Cheng et al. (1989)
B. subtilis TAM-4 Glucose (75 g/L) NH4C1 (18 g/L) Flask 30 96 22.1 29.47 Ito et al. (1996)
B. subtilis C10 Glucose (80 g/L)
Citric acid (20 g/L)
NH4C1 (10 g/L) 10 L 32 32 27.7 27.70 Zhang et al. (2012)
B. subtilis GXG-5 Glucose (25 g/L) NH4NO3 (25 g/L) 10 L 50 34 19.5 78.00 This study
  1. aThe conversion efficiency was defined as the ratio of γ-PGA yield and carbon source concentration