ISSN 2736-1756
Research Article
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Full Length Research Paper
Effect of metal ion concentration on the biosorption of Pb2+ and Cd2+ by Caladium bicolor (wild cocoyam)
Michael Horsfall Jnr* and Ayebaemi I. Spiff
Department of Pure and Industrial ChemistryUniversity of Port Harcourt, Uniport P. O. Box 402, Choba, Port Harcourt, Nigeria.
Accepted 28 December, 2004
Abstract
The influence of initial metal ion concentration of the batch sorption of Pb2+ and Cd2+ onto a low -cost biosorbent was investigated. The experimental results were analysed in terms of Langmuir and Freundlich isotherms. According to the evaluation using Langmuir equation, the monolayer sorption capacity obtained were 49.53 and 65.50 mM/g for Pb2+ and Cd2+, respectively The data further showed that, sorption of the two divalent metals onto the biomass increased with increase in initial metal ion concentration until monolayer coverage is attained. The thermodynamic assessment of the metal ion – Caladium bicolor biomass system indicates the feasibility and spontaneous nature of the process and Go was evaluated as ranging from –4.55 to –6.63 KJ mol-1 and –4.02 to –6.09 KJ mol-1 for Pb2+ and Cd2+ sorption, respectively. The order of magnitude of the Go values indicates an ion-exchange physisorption process.
Keywords: Phytoremediation, cocoyam, adsorption, water treatment, heavy metals removal.
Ayebaemi I. Spiff, Michael Horsfall Jnr*
Page: 1 - 10
Review
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Review
Implicating roles of animal reservoir hosts in the resurgence of Gambian trypanosomosis (Sleeping Sickness)
J. N. Abenga1* and I. A. Lawal2
1Pathology, Epidemiology and Statistics Division, Nigerian Institute for Trypanosomiasis Research, Private Mail Bag, 2077, Kaduna, Nigeria.
2Department of Veterinary Parasitology and Entomology, Faculty of Veterinary Medicine, Ahmadu Bello University, Samaru, Zaria, Nigeria.
Accepted 23 December, 2004
Abstract
Gambian trypanosomosis (Sleeping Sickness) is a complex and debilitating disease of man. For many years the disease has been ravaging in several parts of sub-saharan Africa despite decades of therapeutic control. Although animal reservoir hosts are believed to be associated with the disease, not much evidences have been established to prove the true existence of animal reservoir hosts for Trypanosoma brucei gambiense and the zoonotic nature of Gambian Sleeping Sickness. This paper reviews recent evidences based on molecular and other biotechnologies leading to the identification of mammalian hosts as reservoirs of T. b. gambiense and the roles of such hosts in transmission and resurgence of sleeping sickness in sub-Saharan Africa.
Key words: Gambian trypanosomosis, Trypanosoma brucei gambiense, animal reservoir hosts, biotechnologies.
I. A. Lawal, J. N. Abenga*
Page: 1 - 10
Research Article
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Full Length Research Paper
Urinary schistosomiasis in a rural community in Edo state, Nigeria: Eosinophiluria as a diagnostic marker
Nmorsi OPG1*, Egwunyenga OA2, Ukwandu, NCD3, Nwokolo NQ1
1Department of Zoology, Ambrose Alli University, Ekpoma, Nigeria.
2Department of Zoology, Delta State University, Abraka, Nigeria.
3Department of Medical Microbiology, Ambrose Alli University, Ekpoma, Nigeria.
Accepted 27 December, 2004
Abstract
The prevalence of urinary schistosomiasis in Ikpeshi, a rural community of Edo State, Nigeria showed that 195(65%) out of 300 volunteers harboured Schistosoma haematobium ova in their urine. Eosinophiluria was markedly significant > 5 eosinophilic leucocyturia/hpf and reported among 250 (83.3%) inhabitants. Of these, ova were absent in 55 (22.0%) of urine samples but had other associated urinary symptoms namely; proteinuria or haematuria or both. Eosinophiluria among the inhabitants with light infections as described by < 50 ova/10ml was 15.83 ± 15.98 x 109/L while heavy infections ( >50 ova/10ml of urine) was 107 ± 76.20 x 109/L. In all, the eosinophiluria showed a positive correlation with the S. haematobium ova excreted in their urine (r = 0.40046, p < 0.05). The sensitivities of the urinary symptoms are eosinophiluria (100%), proteinuria (56.0%), haematuria (80.0%), specific gravity (84.0%) and turbidity (76.0%). The eosinophiluria with the a relatively highest sensitivity can complement the use of ova in urine as a diagnostic marker especially in sub clinical cases and other periods when egg laying capacity of this fluke are suppressed or absent.
Key words: Eosinophiluria, urinary schistosomiasis, urinary symptoms, rural community, Nigeria.
Egwunyenga OA, NCD , Nwokolo NQ, Nmorsi OPG*, Ukwandu
Page: 1 - 10
Research Article
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Full Length Research Paper
Utilization of petroleum hydrocarbons by Pseudomonas sp. and transformed Escherichia coli
Emtiazi, G., Shakarami, H., Nahvi, I. and Mirdamadian, S. H.
Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran.
Accepted 10 August, 2004
Abstract
Our previous studies showed that the biodegradation of petroleum oil by a pseudomonas isolated from a petroleum -contaminated soil was instable. In this work, it is shown that when the isolates are immobilized on Perlite, they are more stable for oil degradation. Although the isolate did not have any chemotaxis to octadecane, dodecane and octane but utilize octadecane and dodecane better than octane and it did not utilized hexane, benzene, kerosene, pentane, heptane or thiophenol. The generation time for degradation of petroleum oil, dodecane and octadecane was 20, 22, and 25 h respectively. This phenotype was not transformed to Pseudomonas by conjugation even with lysozyme treatment, however the petroleum oil and octadecane utilization were transformed to Escherichia coli by lysozyme treatment. The transformed E. coli lost the ability to use octadecane after three subcultures on nutrient broth and 34 generations.
Keywords: Petroleum, transformation, chemotaxis, biodegradation, immobilization.
Nahvi , I. and Mirdamadian, Shakarami , S. H., Emtiazi , H. , G.
Page: 1 - 10
Research Article
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Full Length Research Paper
Production of bioemulsifier by an unusual isolate of salmon/red melanin containing Rhodotorula glutinis
Oloke J. K.1* and Glick B. R.2
1Department of Pure and Applied Biology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
2Department of Biology, University of Waterloo, Ontario, Canada.
Accepted 11 January, 2005
Abstract
An unusual isolate of Rhodotorula glutinis was obtained. The yeast produces a spore and a crystalliferous protein per cell. Sodium dodecyl sulfate polyacrylamide gel electrophoresis revealed that the parasporal crystals contained polypeptides with a molecular mass of approximately 55, 47, 40, 36 32.5, 30 and 25 kD. The yeast also produces a salmon/red pigment at late stage of exponential growth, which has physical and chemical properties that are consistent with it being a form of melanin. The organism has been used to produce bioemulsifier with emulsion index of 80% when tested against kerosene and crude oil. The bioemulsifier has been shown to be capable of eliminating about 76% of crude oil pollutant. The colonial and mycelia forms of Rhodosporidium toruloides and Rhodosporidium sphaerocarpum have been successfully isolated from the unusual organism.
Key words: Bioemulsifier, rhodotorula glutinis, teleomorph, Rhodosporidium toruloides.
Oloke J. K*, Glick B. R.
Page: 1 - 10
Research Article
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Full Length Research Paper
Characteristics of fermentation yeast isolated from traditional Ethiopian honey wine, ogol
Teramoto Y.1*, Sato R.2, and Ueda S.1
1Department of Applied Microbial Technology, Sojo University, Ikeda 4-22-1, Kumamoto 860-0082, Japan
2Graduate School of Social and Cultural Studies and Kyushu University, Ropponmatsu 4-2-1, Fukuoka 810-8560, Japan.
Accepted 20 December, 2005
Abstract
Indigenous honey wine, known locally as ogol, was collected in a village of the Majangir ethnic group in Southwest Ethiopia, and the procedure for ogol fermentation was investigated. A fermentation yeast was first isolated from ogol and identified as being a strain of the genus Saccharomyces cerevisiae. Honey wine made with S. cerevisiae ET99 contains 16.5% (v/v) ethanol; the acidity and pH were 6.0 and 3.8, respectively. Volatile ester and higher alcohol were detected by gas chromatography. A relatively higher amount of propan-1- ol (43 mg/l) was found in the honey wine than in those made with wine yeast W4 and sake yeast K7. The aroma characteristics of honey wine made with yeast ET99 were acceptable, as determined by organoleptic tests, and were found to be applicable to ethanol fermentation.
Key Words: Honey wine, ogol, indigenous alcoholic beverage, fermentation, Saccharomyces, Ethiopia.
Teramoto Y*, Sato R and Ueda S
Page: 1 - 10