Nomenclature Abstract for Arthrobacter viscosus Gasdorf et al. 1965 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Nicole Danielle Osier ◽  
George M Garrity
Keyword(s):  
Arthrobacter Viscosus

scholarly journals The role of Arthrobacter viscosus in the removal of Pb(II) from aqueous solutions

2017 ◽  
Vol 76 (7) ◽  
pp. 1726-1738 ◽  
Author(s):  
Raluca Maria Hlihor ◽  
Mihaela Roşca ◽  
Teresa Tavares ◽  
Maria Gavrilescu
Keyword(s):  
Aqueous Solutions ◽  
Isotherm Models ◽  
X Ray ◽  
Optimum Parameters ◽  
Living Biomass ◽  
Initial Ph ◽  
Edx Analyses ◽  
Arthrobacter Viscosus ◽  
Kinetic And Isotherm Models

The aim of this paper was to establish the optimum parameters for the biosorption of Pb(II) by dead and living Arthrobacter viscosus biomass from aqueous solution. It was found that at an initial pH of 4 and 26 °C, the dead biomass was able to remove 97% of 100 mg/L Pb(II), while the living biomass removed 96% of 100 mg/L Pb(II) at an initial pH of 6 and 28 ± 2 °C. The results were modeled using various kinetic and isotherm models so as to find out the mechanism of Pb(II) removal by A. viscosus. The modeling results indicated that Pb(II) biosorption by A. viscosus was based on a chemical reaction and that sorption occurred at the functional groups on the surface of the biomass. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy coupled with energy dispersive X-ray microanalysis (SEM-EDX) analyses confirmed these findings. The suitability of living biomass as biosorbent in the form of a biofilm immobilized on star-shaped polyethylene supports was also demonstrated. The results suggest that the use of dead and living A. viscosus for the removal of Pb(II) from aqueous solutions is an effective alternative, considering that up to now it has only been used in the form of biofilms supported on different zeolites.

Structure of the extracellular bacterial polysaccharide from Arthrobacter viscosus NRRL B-1973

1968 ◽  
Vol 46 (21) ◽  
pp. 3353-3361 ◽  
Author(s):  
J. H. Sloneker ◽  
Danute G. Orentas ◽  
C. A. Knutson ◽  
P. R. Watson ◽  
Allene Jeanes
Keyword(s):  
Acid Hydrolysis ◽  
Linear Structure ◽  
Sugar Residue ◽  
Hydroxyl Groups ◽  
Bacterial Polysaccharide ◽  
Sodium Metaperiodate ◽  
Mannuronic Acid ◽  
Arthrobacter Viscosus ◽  
Hydrolysis Of

D-Glucose, D-galactose, and D-mannuronic acid in equimolar proportions constitute 75% of the weight of the polysaccharide elaborated by Arthrobacter viscosus NRRL B-1973. O-Acetyl groups account for the remaining 25% of the weight; 50% of the hydroxyl groups are acetylated. Acid hydrolysis of the polysaccharide revealed that the D-mannopyranosyluronic acid bonds hydrolyzed with unexpected ease. Controlled acid hydrolysis afforded three oligosaccharides identified as 4-O-β-D-glucopyranosyl-D-galactose; 4-O-β-D-mannopyranosyluronic acid-D-glucose; and O-β-D-mannopyranosyluronic acid-(1 → 4)-O-β-D-glucopyranosyl-(1 → 4)-D-galactose. The native polysaccharide was oxidized slowly by sodium metaperiodate and consumed 0.42 mole per sugar residue in 340 h at 4°. The deacetylated polysaccharide consumed 0.67 mole of periodate per sugar residue and produced 1 mole of acid per 160 to 165 sugar residues in 170 h at 4°. At 20° the deacetylated polysaccharide was oxidized excessively by periodate, 1.5 moles of oxidant was consumed, and 0.4 mole of acid was produced per sugar residue in 340 h. However, only 20% of the C4-substituted D-glucose residues in the polysaccharide was cleaved by periodate in spite of the excessive oxidation at 20°.The polysaccharide has a linear structure and consists predominantly of repeating trisaccharide units, O-β-D-mannopyranosyluronic acid-(1 → 4)-O-β-D-glucopyranosyl-(1 → 4)-D-galactose.

scholarly journals Reclassification of Arthrobacter viscosus as Rhizobium viscosum comb. nov

2017 ◽  
Vol 67 (6) ◽  
pp. 1789-1792 ◽  
Author(s):  
José David Flores-Félix ◽  
Martha Helena Ramírez-Bahena ◽  
Sergio Salazar ◽  
Alvaro Peix ◽  
Encarna Velázquez
Keyword(s):  
Arthrobacter Viscosus

scholarly journals Molecular cloning of the penicillin G acylase gene from Arthrobacter viscosus.

1988 ◽  
Vol 54 (11) ◽  
pp. 2603-2607 ◽  
Author(s):  
H Ohashi ◽  
Y Katsuta ◽  
T Hashizume ◽  
S N Abe ◽  
H Kajiura ◽  
...  
Keyword(s):  
Molecular Cloning ◽  
Penicillin G Acylase ◽  
Penicillin G ◽  
Arthrobacter Viscosus

Stabilization of Arthrobacter viscosus Penicillin G Acylase

2013 ◽  
Vol 2 (4) ◽  
pp. 315-321 ◽  
Author(s):  
Magdy M. M. Elnashar ◽  
Marwa I. Wahba ◽  
Magdy A. Amin ◽  
Ahmed I. Eldiwany
Keyword(s):  
Penicillin G Acylase ◽  
Penicillin G ◽  
Arthrobacter Viscosus

scholarly journals Iron and Chromium Removal from Binary Solutions of Fe(III)/Cr(III) and Fe(III)/Cr(VI) by Biosorbents Supported on Zeolites

2008 ◽  
Vol 587-588 ◽  
pp. 463-467 ◽  
Author(s):  
B. Silva ◽  
Hugo Figueiredo ◽  
Cristina Quintelas ◽  
I.C. Neves ◽  
T. Tavares
Keyword(s):  
Chromium Removal ◽  
Chemical Analyses ◽  
Metallic Ions ◽  
Nay Zeolite ◽  
Binary Solutions ◽  
Initial Concentration ◽  
Suspended Biomass ◽  
Removal Efficiencies ◽  
Arthrobacter Viscosus ◽  
Very High

The removal of metallic ions from binary aqueous solutions of Fe(III)/Cr(III) and Fe(III)/Cr(VI) by an Arthrobacter viscosus biofilm supported on NaY zeolite was investigated. Experiments were repeated with suspended biomass for comparison purposes. Batch assays were performed using different concentrations (10, 25 and 40 mg/L), for both metals in solution. Results indicated that Arthrobacter viscosus is able to retain the metallic ions, although not totally. The removal efficiencies were improved when the biofilm was supported on the zeolite, for all the initial concentrations of Cr(III), for the intermediate and higher concentration of Cr(VI) and for all range of initial concentrations of Fe(III), in the presence of Cr(III). The bacteria reduce Cr(VI) to Cr(III) and, only then, this cation may be entrapped in the framework zeolite by ion exchange. Suspended bacteria had higher affinity for Fe(III), than for Cr(VI) or Cr(III), while the conjugated system was selective to Fe(III) when in the presence of Cr(VI). For solutions of Fe(III)/Cr(III), very high removals were achieved by the supported system, ranging from 94 to 100 % for Cr(III) and from 98 to 100 % for Fe(III). The conjugated system also reached the highest removal ratio of Cr(VI), 36 %, for the initial concentration of 40 mg/L. The materials in study were characterized by techniques such as FTIR, SEM and chemical analyses.

scholarly journals Removal of Ni(II) from aqueous solutions by an Arthrobacter viscosus biofilm supported on zeolite: From laboratory to pilot scale

2013 ◽  
Vol 142 ◽  
pp. 368-374 ◽  
Author(s):  
Cristina Quintelas ◽  
Ricardo Pereira ◽  
Ecem Kaplan ◽  
Teresa Tavares
Keyword(s):  
Aqueous Solutions ◽  
Pilot Scale ◽  
Arthrobacter Viscosus
Sign in / Sign up

Export Citation Format

Share Document