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Table 2 Comparison of the carbon source cost in different glutamate-independent strains to produce 10 kg γ-PGA

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

Strains Carbon source Cost saving (%)a
Types Price ($ t−1) Amount (kg) Cost ($)
B. amyloliquefaciens LL3 Sucrose 1054 113.64 119.78 93.75
B. licheniformis A35 Glucose 584 62.50 36.50 79.48
B. subtilis TAM-4 Glucose 584 33.94 19.82 62.21
B. subtilis C10 Glucose 584 28.88 23.18 67.69
Citric acid 875 7.22
B. subtilis GXG-5 Glucose 584 12.82 7.49
  1. aRepresented the cost saving proportion of B. subtilis GXG-5 compared with the corresponding strain