Efficient molasses utilization for low-molecular-weight poly-γ-glutamic acid production using a novel Bacillus subtilis strain

Table 1 Feedstock cost analysis of γ-PGA production using cane molasses and glucose by B. subtilis 242

Culture medium	Carbon source consumed (kg)	Cost ($)	Nitrogen source consumed (kg)	Cost ($)	γ-PGA produced (kg)	Cost ($/kg)	Cost saving^a (%)
Glucose + YE	210	109	4	10	80	1.48	–
Cane molasses + corn steep liquor	200	24	4	2	62	0.43	71

^aThe cost analysis includes only carbon and nitrogen sources, not including other components (l-glutamate, K₂HPO₄, MgSO₄.7H₂O)

ISSN: 1475-2859