scholarly journals Studies on the bioutilization of some petroleum hydrocarbons by single and mixed cultures of some bacterial species

2011 ◽  
Vol 5 (12) ◽  
pp. 1457-1466 ◽  
Author(s):  
Moneke Anene ◽  
Nwangwu Chika
Keyword(s):  
Petroleum Hydrocarbons ◽  
Bacterial Species ◽  
Mixed Cultures ◽  
Single And Mixed Cultures

scholarly journals Laboratory Study for Biodegradation of Oxymatrine Insecticide by Single and Mixed Cultures of Fungi Isolated from Agriculture Soils in Basrah Governorate, Iraq

2019 ◽  
Vol 16 (1) ◽  
pp. 0010
Author(s):  
Raheem Et al.
Keyword(s):  
Laboratory Study ◽  
Degradation Rate ◽  
Soil Fungi ◽  
Mixed Cultures ◽  
Baseline Study ◽  
Biodegradation Process ◽  
Single And Mixed Cultures

This study focuses on the biodegradation of oxymatrine insecticide by some soil fungi isolated from four agriculture stations. The results showed that the highest degradation rate 94.66% was recorded by Ulocladium sp. at 10 days and A. niger recorded the lowest degradation rate 45.86%, while at 20 days Ulocladium sp. also showed the highest degradation rate 94.98% and the lowest degradation rate reached to 82.49% with A.niger. The mix (Exerohilum sp.+Ulocladium sp.) recorded the highest degradation rate of oxymatrine insecticide 90.22%, 88.51%, 85.34%  at 4, 8 and 12 ppm.The use of mixed isolates enhanced the biodegradation process. There is no study of oxymatrine biodegradation so this study is the first of its kind in the region which can be used as a baseline study for incoming studies

Oil Degrading Bacteria: Remediation of Environmental Pollution Resulting from Petroleum Hydrocarbons

2020 ◽  
Vol 2 (10) ◽  
pp. 5-10
Author(s):  
Ishita Agrawal
Keyword(s):  
Environmental Pollution ◽  
Environmental Health ◽  
Petroleum Hydrocarbons ◽  
Petroleum Hydrocarbon ◽  
High Efficiency ◽  
Bacterial Species ◽  
Ongoing Research ◽  
Degrading Bacteria ◽  
Remedial Actions ◽  
Hazardous Pollutants

It is widely known that petroleum hydrocarbons constitute one of the most hazardous pollutants that affect human and environmental health. The ongoing research on bioremediation with petroleum hydrocarbon-degrading bacteria has shown tremendous promise of the technology due to its advantages of high efficiency and eco-friendly nature. To this end, studies have been carried out to identify a large amount of bacterial species with petroleum hydrocarbon-degrading ability for applications in bioremediation. Here, we present a brief perspective of some of the notable advances in oil degrading bacteria and the remedial actions for decontamination of water and soil along with recovering the spilled materials at oil sites.

Experimentelle Rotlauf- und Streptokokken-Endokarditis bei der Ratte

1971 ◽  
Vol 8 (2) ◽  
pp. 146-174 ◽  
Author(s):  
A. Kast ◽  
M. Herbst ◽  
L. Stoll
Keyword(s):  
Endothelial Cells ◽  
Mixed Culture ◽  
Bacterial Endocarditis ◽  
Mixed Cultures ◽  
The Other ◽  
Male Rats ◽  
Bacterial Colonisation ◽  
Intravenous Injections ◽  
Single And Mixed Cultures

The ability of intravenous injections of single and mixed cultures of streptococci of types A, C, D, E, G, and N, of S. viridans and of E. rhusiopathiae of serotypes A and B, to cause endocarditis in rats was tested. A mixed culture of three strains of Erysipelothrix was particularly effective, especially in male rats, whereas in all the other experiments, bacterial endocarditis seldom occurred. The endocarditis was a consequence of vasculitis and myocarditis. In most cases of valvular endocarditis subendothelial edema caused detachment of endothelial cells and provided the environment for bacterial colonisation of the valves.

Favorable effects in vitro and in vivo of two clinical isolates of Pseudomonas aeruginosa on nutritionally deficient Staphylococcus aureus strains

1973 ◽  
Vol 19 (8) ◽  
pp. 973-981 ◽  
Author(s):  
T. Gadbois ◽  
J. De Repentigny ◽  
L. G. Mathieu
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Peritoneal Cavity ◽  
Pathogenic Bacteria ◽  
Bacterial Species ◽  
Mixed Cultures ◽  
Rabbit Skin ◽  
Metabolic Activities

We have studied aspects of interbacterial ecology with nutritionally dependent Staphylococcus aureus strains; they were grown in association with Pseudomonas aeruginosa in systems of mixed cultures and infections in vitro in a semisynthetic medium and in vivo in mouse peritoneal cavity and rabbit skin. In mixed cultures and in P. aeruginosa culture filtrates, thymine and tryptophan deficiencies in staphylococci were partly overcome. This is probably because P. aeruginosa supplied the essential metabolites required to ensure growth; however, other metabolic activities could also be involved. Other experiments showed that the sensitivity of thymineless staphylococci to nucleoside inhibitions was alleviated. In mixed infections with P. aeruginosa, the S. aureus thymineless strain has shown a greater ability to survive in the peritoneal cavity of mice than when injected alone, even when one species was injected after the other with different doses of bacteria. The examination of the liquid from the peritoneal cavity of infected mice by fluorescence microscopy after fluorochroming with acridine orange or auramine O has revealed that Pseudomonas endotoxin seems to damage leucocytes and consequently reduces the phagocytosis of Staphylococcus cells.Necrosis in rabbit skin was mainly due to S. aureus when both species were injected together intradermally; the thymineless strain was less harmful than the parent strain.It seems that survival and even growth of nutritionally dependent strains of a bacterial species can be favored by the metabolic activities of another species in mixed cultures and infections, in this instance S. aureus by P. aeruginosa. This phenomenon among others could be a determinant of bacterial pathogenicity for nutritionally dependent pathogenic bacteria; thus associated organisms could determine the effective pathogenicity of nutritionally dependent bacteria by contributing essential nutrilites at the site where infection is initiated.

Comparative study of single and mixed cultures of actinobacteria for the bioremediation of co-contaminated matrices

2018 ◽  
Vol 6 (2) ◽  
pp. 2310-2318 ◽  
Author(s):  
Juan Daniel Aparicio ◽  
Juliana Maria Saez ◽  
Enzo Emanuel Raimondo ◽  
Claudia Susana Benimeli ◽  
Marta Alejandra Polti
Keyword(s):  
Comparative Study ◽  
Mixed Cultures ◽  
Single And Mixed Cultures

Intra- and interspecific competition between biotypes B and Q of Bemisia tabaci (Hemiptera: Aleyrodidae) from Spain

2004 ◽  
Vol 94 (4) ◽  
pp. 369-375 ◽  
Author(s):  
S. Pascual ◽  
C. Callejas
Keyword(s):  
Sex Ratio ◽  
Interspecific Competition ◽  
Bemisia Tabaci ◽  
Interspecific Interactions ◽  
Developmental Rate ◽  
Mixed Cultures ◽  
Progeny Size ◽  
Moderate Effect ◽  
Single And Mixed Cultures ◽  
Biotype B

AbstractBiotypes B and Q of Bemisia tabaci (Gennadius), collected from the islands of Tenerife and Majorca respectively, were exposed to competition conditions on tomato cv. Marmande in the laboratory. Both biotypes were established in single and mixed cultures at different densities. Increased mortality of biotype Q females and immature instars was observed together with a lower rate of fecundity and progeny size compared to biotype B, when reared in single or mixed cultures. The female:male sex ratio of F1 individuals of biotype Q was higher in single than in mixed cultures. However, the sex ratio of F1 individuals of biotype B was the same in single and mixed cultures, suggesting reproductive interference. Whitefly density did not affect interspecific interactions. It had a moderate effect on developmental rate of both biotypes, and on mortality of immature instars and progeny size of biotype B only. The results indicate that under laboratory conditions the studied biotype B should displace biotype Q.

The use of single and mixed cultures for aerobic treatment of cane sugar stillage and SCP production

1987 ◽  
Vol 22 (1) ◽  
pp. 67-73 ◽  
Author(s):  
B.C. Nudel ◽  
R.S. Waehner ◽  
E.R. Fraile ◽  
A.M. Giulietti
Keyword(s):  
Cane Sugar ◽  
Mixed Cultures ◽  
Aerobic Treatment ◽  
Single And Mixed Cultures
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