Articles

Browse our published research articles

140 articles
11
Research Article

Examination of Pipe-Borne Water Supply from Oshogbo - Ede Water Treatment Plant to University of Ife and Neighbouring Towns for Presence of Coliforms

P. O. Olutiola*, B. Fesshatzion, R. N. Okoye

Perhaps the greatest danger associated with drinking water is contamination by human excrement (Bacteriological Examination of Water Supplies (BEWS), 1970). If such excrement contains pathogenic microorganisms, then consumers of the water may become infected by the diseases caused by the pathogens. The coliforms are generally present in large numbers in human excrement and can be detected in numbe...

Dec, 1982 pp. 181-184
12
Research Article

A Chemically Defined Medium for Growth of Rhizobium

Olu Odeyemi*

A new synthetic medium was developed for growth of rhizobia. The medium consisted of mineral salts amended with 0.5% mannitol and one or two growth factors. The vitamins calcium pantothenate, thiamine mononitrate, inositol, and biotin stimulated rhizobial growth. In particular, calcium pantothenate was found to be almost as effective as a combination of all the other vitamins in promoting growth o...

Dec, 1982 pp. 185-189
13
Research Article

The Effect Of Candida Tropicalis and Pichia Membranaefaciens on the Germination of Seeds of Capsicum Annuum L.

S. N. Ibe*, C. U. Ike

Inoculation of 2 × 10⁶ cells of the yeasts Candida tropicalis and Pichia membranaefaciens into fruits of the large red pepper induced soft watery rot within 4 days of incubation at room temperature, 28 ± 2°C. Germination of the seeds on wet sterile filter papers was reduced to less than 10% in one week. Abnormal germination was observed after the 4th day, and dead seeds were prominent after the 6t...

Dec, 1982 pp. 190-194
14
Research Article

Partial Characterization of a Trypsin-Stimulated Cytoplasmic Soluble Adenosine Triphosphatase of Agrobacterium Tumefaciens

Olusola O. Shonukan*

A cold-labile trypsin-stimulated adenosine triphosphatase, ATPase (EC. 3.6.1.3) activity has been found associated with the partially purified cytoplasmic soluble fraction of Agrobacterium tumefaciens strain C-58. Chromatographic, electrophoretic, and catalytic studies are also reported. Trypsin activated the enzyme 31% at the pH optimum of between 8.0 and 9.0. The optimum temperature of activity ...

Dec, 1982 pp. 195-206
15
Research Article

Microbial Degradation of Soil Applied Herbicides

Mildred A. Amakiri*

The ability of some soil bacteria to degrade the herbicides, chloroxuron (N-4-(4-chlorophenoxy) phenyl)-N,N-dimethyl-urea) and metobromuron (N-bromo-phenyl)-N-methoxy-N-methylurea) in laboratory experiments was investigated. The Rf and maximum absorption range values of the original herbicides and the end products after incubation with soil microorganisms indicated that new products were formed. T...

Dec, 1982 pp. 207-210
16
Research Article

Effects of Oil Pollution on the Soil of Umuokpara in Abia State

Ekwenye , U.N*, Aneke, N. C

The effects of oil pollution on the soil of Umuokpara in Abia state was investigated. Soil samples were taken from three sites; from the mining spot, 100 meters away from the spot and 200 meters away from the spot. Soil samples collected were subjected to Laboratory analysis. The soil texture varied from loamy sand to sandy loam on the surface to sandy loamy in the sub-surface horizons. The soil f...

Jun, 2008 pp. 1746 – 1753
17
Research Article

Effect of PH and Temperature on Cell Viability and Haemolysin Production by Listeria Spp. Isolated from Uncooked Meat and Vegetable Samples in Nsukka, Nigeria

Ikeh, M. A. C.*, Obi, S. K. C., Moneke, A. N., Ezeonu, I. M.

Haemolysin (Listeriolysin O) is a major virulence factor in pathogenic strains of Listeria. Presently, the conditions for its production are not fully elucidated. This study examined the influence of culture pH and temperature on cell viability, multiplication and haemolysin production by fresh isolates of L. monocytogenes, L. ivanovii and L. seeligieri. At 5oC and pH 3.8 to 4.8, there was a signi...

Dec, 2010 pp. 2235 – 2242
18
Research Article

Antibiotic Resistance Profile of Wastewater Isolates Obtained From University of Calabar Teaching Hospital and General Hospital Calabar, Nigeria.

Akubuenyi F.C*, G.E. Arikpo, C.J. Ogugbue, J.F. Mfongeh, E. V. Akpanumun

The antibiotic resistance profile of bacterial isolates obtained from the wastewaters of the University of Calabar Teaching Hospital (UCTH) and the General Hospital Calabar (GHC), Cross River State, Nigeria, was determined using the disc-diffusion method. A total of 125 bacterial isolates from both hospitals` wastewater comprising of the following genera: Escherichia; Sal...

Jun, 2011 pp. 2243 – 2250
19
Research Article

In Vitro DIGESTIBILITY EVALUATION OF RICE BRAN MEAL INCORPORATED WITH PRECIPITATE p-D MANNANASE FROM Penicillium italicum

Ekundayo, T. C*, Olaniyi, O.O

The effect of addition of crude and ammonium sulphate ((NH^SQi) precipitation of P-D-mannanase produced by Penicillium italicum on in vitro dry matter digestibility (IVDMD) and in vitro protein digestibility (IVPD) of rice bran meal intended for animal feed formulation was studied. Firstly, the crude enzyme (non-precipitated), and (NH-1)SO4 precipitated enzyme were incorporated in the series o...

Aug, 2015 pp. 2760-2766
20
Research Article

HEPATITIS B AND C SEROPOSITIVITY IN A COHORT OF HIV-POSITIVE PATIENTS IN ILORIN, NORTH-CENTRAL NIGERIA

Udeze A.O*, Ali U.M, Adeoye P.A, Odugbesi A.E, Sule W.F, Okonko I.O

Since HIV, HBV and HCV share common routes of transmission and acquisition, HIV infected patients are likely exposed to HB and C viruses. We hypothesised that there was no difference between prevalence rate of HB and C infections among HIV-infected patients accessing healthcare at HIV and AIDS section of University of Ilorin Teaching Hospital, Ilorin, Nigeria. This is a hospital-based cross sec...

Aug, 2015 pp. 2767-2776