Rhodospirillum ruhrum

The complete conversion of glycerol with formation of dihydrogen and volatile organic carboxylic acids is an interesting feature of the system. The carboxylic acids could be isolated, if present in a significant amount, or further converted into H2 and CO2 by using an ad hoc bacterial strain. The photosynthetic bacterium Rhodospirillum ruhrum seems to be the most appropriate for such an application. A pH adjustment to 6 helps to improve the acid conversion with a very low residual organic acid content [36]. 

Hatefi et al. 220) have isolated the succinate dehydrogenase of Rhodospirillum ruhrum by extraction of chromatophores with NaC104. The enzyme has two subnits of molecular weights of approximately... 

Visschers RW, Nunn R, Calkoen F, van Mourik F, FlunterCN, Rice DR and van Grondelle R (1992) Spectroscopic characterization of B820 subunits from light-harvesting complex I of Rhodospirillum ruhrum and Rhodobacter sphaeroides prepared with the detergent n-octyl-rac-2,3-... 

Solvent extraction method is one of the oldest techniques adopted for extraction of PHB. The mechanism of action of solvent is that it modifies the cell membrane permeability and then solubilize PHB. This process was first adopted by Temoigne and Baptist for the extraction of PHB from B. megaterium and Rhodospirillum ruhrum Several solvent mixtures were tried for the separation of PHB from the solvent by solvent evaporation or by precipitation in a nonsolvent. 

Kemnitzer JE, McCarthy SP, Gross RA (1993) Syndiospecific ring-opening polymerization of P-butyrolactone to form predominantly syndiotactic poly(P-hydroxybutyrate) using Tin (IV) catalysts. Macromolecules 23 6143-6150 Kessi J, Ramuz M, Wehrli E, Spycher M, Bachofen R (1999) Reduction of selenite and detoxification of elemental selenium by the phototrophic bacterium Rhodospirillum ruhrum. Appl Environ Microbiol 65 4734-4740 Kim O, Gross RA, Rutherford DR (1995) Bioengineering of poly (P-hydroxyalkanoates) for advanced material applications incorporation of cyano and nitrophenoxy side chain substituents. Can J Microbiol 41(Suppl) 32-M3... 

---