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Wani P.A.,Crescent University | Khan M.S.,Aligarh Muslim University
Bulletin of Environmental Contamination and Toxicology | Year: 2013

Pollution of the biosphere by heavy metals is a global threat that has accelerated dramatically since the beginning of industrial revolution. The aim of the study is to check the resistance of RL9 towards the metals and to observe the effect of Rhizobium species on growth, pigment content, protein and nickel uptake by lentil in the presence and absence of nickel. The multi metal tolerant and plant growth promoting Rhizobium strain RL9 was isolated from the nodules of lentil. The strain not only tolerated nickel but was also tolerant o cadmium, chromium, nickel, lead, zinc and copper. The strain tolerated nickel 500 μg/mL, cadmium 300 μg/mL, chromium 400 μg/mL, lead 1,400 μg/mL, zinc 1,000 μg/mL and copper 300 μg/mL, produced good amount of indole acetic acid and was also positive for siderophore, hydrogen cyanide and ammonia. The strain RL9 was further assessed with increasing concentrations of nickel when lentil was used as a test crop. The strain RL9 significantly increased growth, nodulation, chlorophyll, leghaemoglobin, nitrogen content, seed protein and seed yield compared to plants grown in the absence of bioinoculant but amended with nickel The strain RL9 decreased uptake of nickel in lentil compared to plants grown in the absence of bio-inoculant. Due to these intrinsic abilities strain RL9 could be utilized for growth promotion as well as for the remediation of nickel in nickel contaminated soil. © 2013 Springer Science+Business Media New York.

Wani P.A.,Crescent University | Khan M.S.,Aligarh Muslim University
Pakistan Journal of Biological Sciences | Year: 2014

Heavy metal contamination has accelerated due to the rapid industrialization world wide. Accumulation of metals in excess can modify the structure of essential protein or can replace an essential element. Bradyrhizobium strains showed tolerance to cadmium, chromium, nickel, lead, zinc and copper. All the isolates showed maximum tolerance towards lead and zinc which was followed by nickel and chromium. These strains also showed tolerance towards most of the antibiotics. Bradyrhizobium strains were also tested for their Plant Growth Promoting (PGP) substances, all isolates produced good amount of indole acetic acid and were positive for ammonia but only three strains were positive for HCN and siderophore (RM1, RM2 and RM8), the rest isolates showed negative result. Based on the above intrinsic abilities of Bradyrhizobium species, these strains can be used for the growth promotion, as well for the detoxification of the heavy metals in metal polluted soils. © 2014 Asian Network for Scientific Information.

Wani P.A.,Crescent University | Khan M.S.,Aligarh Muslim University
Food and Chemical Toxicology | Year: 2010

Pollution of the agricultural land by the toxic chromium is a global threat that has accelerated dramatically since the beginning of industrial revolution. Toxic chromium affects both the microbial diversity as well as reduces the growth of the plants. Understanding the effect of the chromium reducing and plant growth promoting rhizobacteria on chickpea crop will be useful. Chromium reducing and plant growth promoting Bacillus species PSB10 significantly improved growth, nodulation, chlorophyll, leghaemoglobin, seed yield and grain protein of chickpea crop grown in the presence of different concentrations of chromium compared to the plants grown in the absence of bio-inoculant. The strain also reduced the uptake of chromium in roots, shoots and grains of chickpea crop compared to plants grown in the absence of bio-inoculant. This study thus suggested that the Bacillus species PSB10 due to its intrinsic abilities of growth promotion and attenuation of the toxic effects of chromium could be exploited for remediation of chromium from chromium contaminated sites. © 2010 Elsevier Ltd.

Baoku I.G.,Crescent University | Israel-Cookey C.,Rivers State University of Science And Technology | Olajuwon B.I.,Abeokuta Federal University of Agriculture
Journal of Applied Fluid Mechanics | Year: 2012

The paper examines transient MHD Couette flow of an electrically conducting fluid in the presence of an applied transverse magnetic field and thermal radiation through a porous medium. The dimensionless governing equations of the flow are coupled non-linear partial differential equations and are solved by an efficient and unconditionally stable finite difference scheme of Crank-Nicolson type. The influence of the medium permeability is also assessed. The velocity and temperature profiles for the flow are studied for various interesting parameters of Prandtl number, Nahme number and Hartmann number, and are presented graphically. The results show that the thermal radiation has appreciable influence on the flow.

Edeki S.O.,Covenant University | Opanuga A.A.,Covenant University | Okagbue H.I.,Covenant University | Akinlabi G.O.,Covenant University | And 2 more authors.
Advanced Studies in Theoretical Physics | Year: 2015

This work considers the solution of Transformed-Cauchy-Euler differential equations via Differential Transform method (DTM). For illustration and application of the method’s efficiency and reliability, two examples of order 2 and 3 are solved. The results agreed with the exact solution obtained via Laplace transform method. © 2015 S. O. Edeki, A. A. Opanuga, H. I. Okagbue, G. O. Akinlabi, S. A. Adeosun, and A. S. Osheku.

Alegbeleye W.O.,Abeokuta Federal University of Agriculture | Obasa S.O.,Abeokuta Federal University of Agriculture | Olude O.O.,Abeokuta Federal University of Agriculture | Otubu K.,Abeokuta Federal University of Agriculture | Jimoh W.,Crescent University
Aquaculture Research | Year: 2012

A preliminary feeding trial was conducted to evaluate the nutritive value of adult variegated grasshopper (Zonocerus variegatus) meal (VGM) as a replacement for fish meal in the diets of Clarias gariepinus fingerlings. Proximate analysis result showed that VGM had 61.50% crude protein, 6.87% crude lipid, 27.33 NFE and 9.35% chitin. Five isonitrogenous (30%) and isoenergetic (18.42MJkg -1) diets were formulated in which VGM progressively replaced fishmeal at five inclusion levels (0%, 25%, 50%, 75% and 100%). The best performance in terms of % weight gain was observed in the group of fish fed ED 1 (25% inclusion level) and was not significantly different (P>0.05) from the groups fed the control diet. Weight gain and specific growth rate were significantly lower (P<0.05) in the group fed ED 4 (100%VGM). Feed conversion ratio and protein efficiency ratio were numerically but not significantly different (P>0.05) among the different groups. The results indicate that apparent protein and lipid digestibility were high at all levels, although there were decreases with an increase in the inclusion levels. Carcass lipid decreased with an increase in the inclusion level of VGM. The VGM can replace fish meal up to 25% in the diets of C. gariepinus fingerlings without any adverse effect on growth and nutrient utilization. © 2011 Blackwell Publishing Ltd.

Wani P.A.,Crescent University | Ayoola O.H.,Crescent University
Journal of Environmental Science and Technology | Year: 2015

Chromium (VI) contamination has accelerated due to rapid industrialization worldwide. Aim of this study was to check the bacterial species for their tolerance towards multiple metals, antibiotics and further check whether these bacteria are reducing Cr (VI). Bacterial strains were isolated from the industrial area situated at Lagos-Abeokuta Road, Ile Ise Awo, Abeokuta, Ogun State, Nigeria. All of the isolates showed tolerance to lead, zinc and chromium (VI). Bacterial species also showed tolerance towards antibiotics, 100% of strains were resistant to ampicillin, cotrimoxazole, colistin and gentamycin, 66.6% to nitrofurantoin and nalidixic acid, 83.3% were resistant to streptomycin whereas, 50% were resistant to tetracycline. Among all the strains, only two strains Pseudomonas strain PH2 and PH4 were chosen for chromium (VI) reduction as these strains showed maximum tolerance towards chromium (VI). Maximum reduction (60%) of chromium (VI) was observed at pH 6 by Pseudomonas spp. PH2, which was followed by pH 5 (50%) whereas, pH9 showed least reduction of 12.5%. Similarly, Pseudomonas spp. PH4 also reduced chromium considerably at pH 6 (60%), pH 5 (50%), pH 8 (37.5%) and at pH 9 (12.5%) respectively, at a concentration of 100 μg Cr mLG1 after 120 h of incubation. The Pseudomonas species PH2 reduced chromium (VI) at concentration of 50 μg Cr mLG1 (92%), 100 μg Cr mLG1 (70%) and 150 μg Cr mLG1 (50%), respectively at a pH of 6. Similarly, Pseudomonas species PH4 reduced chromium (VI) by 95% at 50 μg Cr mLG1, 70% at 100 μg Cr mLG1 and 55% at 150 μg Cr mLG1 at a pH of 6. Due to above properties strains could therefore, be used as bioremediators of metals in soils contaminated with heavy metals and can also increase the yield of various crops under heavy metal contamination. © 2015 Asian Network for Scientific Information.

Jimoh W.A.,Crescent University | Fagbenro O.A.,Federal University of Technology Akurre | Adeparusi E.O.,Federal University of Technology Akurre
Electronic Journal of Environmental, Agricultural and Food Chemistry | Year: 2011

Raw, cooked and toasted meals from Sesame (Sesamum indicum) seeds were analysed for proximate, mineral and anti-nutrient composition and the changes accompanying chemical composition when processing sesame seedmeal were investigated. There was significant (P<0.05) variation in the crude protein, crude lipid, crude fibre and ash content of undeffated and defatted sesame seed meal. Defatting the dehulled samples of the sesame seed meal increased its protein contents. There was significant (P<0.05) increase in protein content of the cooked and toasted seed meal when compared with that of the raw sample. While magnesium, sodium and potassium were the most abundant macro minerals in sesame seedmeal, Iron was the most abundant micro mineral in sesame seed meal used. A significant (P<0.05) reduction was observed in the mineral composition with processing time. As was observed in the raw samples, copper was not detected in the sample cooked and toasted for 30 minutes. A reduction in mineral contents of the cooked samples was observed. Raw sesame seed meal contains the highest level of anti-nutrients with respect to Trypsin Inhibitor (TIA), lectin, tannin, phytin, saponin and oxalate. Cooking and toasting reduced anti-nutrient contents of sesame seedmeal at lower cooking and toasting time. TIA and lectin contents were removed at higher cooking time while only lectin content was completely eliminated at 30 minutes toasting time.

Maskooki A.,Asian Institute of Technology | Mortazavi S.A.,Ferdowsi University of Mashhad | Maskooki A.,Crescent University
Desalination | Year: 2010

Cleaning effects of ultrasound and alkaline solution of EDTA individually and together on spiralwound ultrafiltration membrane were studied. Several frequencies of 28, 45 and 100 kHz and alternative waveforms of ultrasound, alkaline solutions of EDTA (pH 11, 1 mM and 3 mM) as well as their interaction effects were used as cleaning agents of spiralwound membranes that fouled using 1% solution of skim milk. The flux recovery and hydrodynamic resistance of each treated membrane were measured during and after cleaning process and cleaning efficiency of each factor was also calculated during various time intervals on treated membranes. The obtained data statistically analyzed in ANOVA table using multifactor design. The overall results showed that the cleaning efficiency of each treatment including different frequencies of ultrasound and alkaline solutions of EDTA individually is relatively low. However, the cleaning efficiency of ultrasound and EDTA increased when applied altogether. The maximum cleaning effects were obtained in the first seconds and after 5 min and additional cleaning process were not necessary. The best results were obtained when mixed waveform of ultrasound and 3 mM EDTA were used together. This effect may be due to a synergistic sonochemical effect of ultrasound and EDTA as cleaning factors. © 2010 Elsevier B.V.

Jimoh W.A.,Crescent University | Aroyehun H.T.,Crescent University
Turkish Journal of Fisheries and Aquatic Sciences | Year: 2011

A 56-day feeding trial was conducted to assess the replacement value of cooked and mechanically defatted sesame seed meal as dietary replacement of soybean meal in diets of Clarias gariepinus. All diets were prepared to be isonitrogenous, (40% crude protein), isolipidic (12% lipid) and isoenergetic (18 Mj/g). Cooked and mechanically defatted sesame seed meals were used to replace soybean meal at a rate of 0, 25, 50, 75, 100% respectively. The performance of the fish fed sesame seed meal-based test diets was compared to fish fed a soybean meal-based control diets containing 40% crude protein. Each treatment had three replicates using 15 catfish fingerlings per tank with mean initial body weight of 6.37±0.21 g. There was no significant difference (P>0.05) in protein productive value, feed intake; specific growth rate, % weight gain and crude deposition between fish fed control diets and fish fed diets containing 25% sesame. Similarly there was no significant difference (P>0.05) in protein productive value, feed intake; specific growth rate, % weight gain and crude deposition between fish fed fish fed diets containing 25% sesame and fish fed diets containing 50% sesame. However, a significant difference (P<0.05) was recorded between fish fed control diets and fish fed other test diets using the above indices. Comparable performance in growth nutrient utilization and carcass crude protein deposition in Clarias gariepinus fed diets with SSM25 and SSM50 showed that these meals could be viable means of improving the cost of fish feeding. © Published by Central Fisheries Research Institute (CFRI) Trabzon, Turkey.

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