Peptostreptococcus productus

Misoph M, Drake HL. 1996. Effect of CO2 on the fermentation capacities of the acetogen Peptostreptococcus productus U-1. J Bacteriol 178 3140-5. 

Continuous stirred-tank reactors (CSTRs) have been routinely employed for producer gas fermentations. A two-stage reactor system has also been used to maximize ethanol production and minimize the formation of byproducts. Carbon monoxide and hydrogen conversions of 90% and 70%, respectively, were observed in the first reactor, while they were about 70% and 10% in the second reactor. High ethanol-to-acetate ratios were achieved by the use of such a dual reactor system. Bubble colunms are also commonly used for industrial fermentations. A comparative study was performed between a CSTR and a bubble column reactor for CO fermentation using Peptostreptococcus productus. Higher conversion rates of CO were observed with the bubble column without the use of any additional agitation. Producer gas fermentation with packed bubble colunms and trickle bed reactors has also been studied. The trickle bed reactor has a low pressure drop and liquid hold-up, and the conversion rates were the highest compared to CSTRs and bubble columns. 

Bott M, Thauer RK. (1989). The active species of COj formed by carbon monoxide dehydrogenase from Peptostreptococcus productus. ZNaturforsch C, 44, 392-396. 

Peptostreptococcus productus 37 Glucose, fructose, xylose, pyruvate and glycerol CO2/H2, CO Lorowitz and Bryant (1984)... 

Nitropyrene Bacteroides sp., Bacteroides thetaiotaomicron, Bacteroides fragilis. Bifidobacterium infantis, Clostridium sp., Clostridium perfringens, Clostridium clostridiiforme, Clostridium leptum, Citrobacter sp., Peptococcus anaerobium, Peptostreptococcus productus. Salmonella typhimurium, Escherichia coli, Lactobacillus sp., Lactobacillus acidophilus. Rat and Human intestinal microflora. 1 -Aminopyrene, 1 -N-Acetyl-1 -aminopyrene, 1 -N-Formyl-1 -aminopyrene. 53, 36, 37, 13, 12, 45, 41, 44, 43, 64, 65, 10. 

Nitrobenzo[a]pyrene Bacteroides thetaiotaomicron. Bifidobacterium infantis, Clostridium sp., Citrobacter sp., Clostridium perfringens, Peptostreptococcus productus, Escherichia coli. Rat and Human intestinal microflora. 6-Aminobenzo[a]pyrene, 6-Nitrosobenzo[a]pyrene. 13, 12, 68, 27. 

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