Comprehensive investigations of biobutanol production by a non-acetone and 1,3-propanediol generating Clostridium strain from glycerol and polysaccharides

Table 2 Comparison of solvent production by different solventogenic Clostridium species

Strain	Carbon source	1,3-PDO (g/L)	Ethanol (g/L)	Butanol (g/L)	Butanol ratio of total solvent (%)	References
C. acetobutylicum 2018adc^a	Glucose (60 g/L)	n.a	2.8	13.6	82	[18]
C. pasteurianum DSM 525	Glycerol (91 g/L)	6.6	0.6	10	39.4	[24]
C. pasteurianum MBEL_GLY2^b	Glycerol (86 g/L)	4.6	0.5	13.7	72.9	[24]
C. pasteurianum DSM525 (M2)^c	Glycerol (46 g/L)	7.25	n.a	8.72	54.6	[9]
C. pasteurianum GL11	Glycerol (60 g/L)	n.a	1.1	14.7	93.0	This study

^a C. acetobutylicum 2018adc: The adc-disrupted mutant of C. acetobutylicum EA 2018; the medium supplemented with 1 % calcium carbonate and 6 mg/L methyl viologen [18]
^b C. pasteurianum MBEL_GLY: Mutant obtained from C. pasteurianum DSM525 after mutagenesis using NTG (N-methyl-N-nitro-N-nitrosoguanidine) [24]
^c C. pasteurianum DSM525 (M2): Mutant obtained from C. pasteurianum DSM525 after mutagenesis using ENU (N-ethyl-N-nitrosourea) [9]

ISSN: 2731-3654