Nomenclature Abstract for Rhodocyclus gelatinosus (Molisch 1907) Imhoff et al. 1984.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Sarah Wigley ◽  
George M Garrity
Keyword(s):  
Rhodocyclus Gelatinosus

scholarly journals Isolation of Rhodocyclus gelatinosus from poultry slaughterhouse wastewater

2002 ◽  
Vol 45 (4) ◽  
pp. 445-449 ◽  
Author(s):  
Elisa Helena Giglio Ponsano ◽  
Pedro Magalhães Lacava ◽  
Marcos Franke Pinto
Keyword(s):  
Carbon Source ◽  
Photosynthetic Bacteria ◽  
Synthetic Medium ◽  
Poultry Feed ◽  
Gram Negative ◽  
Slaughterhouse Wastewater ◽  
Rhodocyclus Gelatinosus

Four cultures of photosynthetic bacteria isolated from poultry slaughterhouse wastewater were identified as Rhodocyclus gelatinosus based on the following properties: reddish color of cultures in synthetic medium, presence of motility, slightly curved Gram-negative rods morphology, gelatin liquefying activity, utilization of citrate as carbon source and production of bacteriochlorophyl a and carotenoids of the spirilloxanthin alternative series. R. gelatinosus may represent a source of nutrients and pigments with application in poultry feed.

Characterization of Reaction Center-B875 Complex of Rhodocyclus gelatinosus: QB Site Properties Derived from Reconstitution Experiments

1991 ◽  
Vol 46 (1-2) ◽  
pp. 99-105 ◽  
Author(s):  
I. Agalidis ◽  
E. Rivas ◽  
F. Reiss-Husson
Keyword(s):  
Reaction Center ◽  
Protein Complex ◽  
Electron Acceptors ◽  
Rhodocyclus Gelatinosus ◽  
Pigment Protein Complex ◽  
Ubiquinone Binding ◽  
Dodecyl Ether ◽  
Particle Weight

Abstract Purified reaction center-B875 pigment-protein complex isolated from Rc. gelatinosus (I. Agalidis, E. Rivas, and F. Reiss-Husson, Photosynth. Res. 23, 249 - 255 (1990)) was further characterized. In the chromatophores, the quinone content was shown to be 6 menaquinones 8 and 16 ubiquinones 8 per reaction center, indicating that the pool contained both quinone types. Besides the primary (MK8) and secondary (UQ8 ) electron acceptors of the reaction cen­ter, the complex contains residual quinones from the membrane pool (about 3 MK8 and 5 UQ8) probably associated with the phospholipids. Apparent particle weight of the complex including bound detergent was 520 ± 46 kDa. The secondary quinone QB was partially removed from the RC by treatment with 2 -3 % octaethyleneglycol dodecyl ether and 3 -4 mᴍ orthophenanthroline. Reconstitution experi­ments showed that UQ6, UQ9 and UQ10 could replace QB but that MK8 and MK9 could not. It was concluded that QB site has a clear specificity towards ubiquinone binding.

scholarly journals Chemical composition of Rhodocyclus gelatinosus biomass produced in poultry slaughterhouse wastewater

2003 ◽  
Vol 46 (2) ◽  
pp. 143-147 ◽  
Author(s):  
Elisa Helena Giglio Ponsano ◽  
Pedro Magalhães Lacava ◽  
Marcos Franke Pinto
Keyword(s):  
Chemical Composition ◽  
Bacterial Biomass ◽  
Dry Weight ◽  
Essential Amino Acids ◽  
Poultry Feed ◽  
Total Carbohydrate ◽  
Slaughterhouse Wastewater ◽  
Fluorescent Lamps ◽  
Glass Columns ◽  
Rhodocyclus Gelatinosus

Rhodocyclus gelatinosus R1 grew photoautotrophically in poultry slaughterhouse wastewater inside glass columns (90x670 mm) during 7 days at 31 ± 4ºC, under anaerobiosis and lightness supplied by daylight plus 3 (100W) incandescent and 4 (40W) fluorescent lamps. The culture was centrifuged (4,500xg/20 min) and lyophilized to originate a bacterial biomass with 7.1% moisture content. Chemical composition investigation showed 67.6% crude protein, 27.6% total carbohydrate, 0.6% lipids and 4.2% ash (dry weight). Amino acid composition of the biomass was similar to others described in the literature for Rhodocyclus gelatinosus and for other photosynthetic bacteria. Effluent COD removal after cultivation and elimination of the biomass was around 90%. The valuable chemical composition of Rhodocyclus gelatinosus R1 biomass and the high content in essential amino acids signs for the potential use of the product in poultry feed.

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