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???substituted Heterocyclic amines account for the main structural skeleton for organic synthesis and constitute adaptable pattern found in numerous medicinal and biological compounds of importance. The development of electrochemical anodic oxidation reactions in the synthesis of advanced ?-substituted heterocycles is highly desirable. The main purpose of this research was to ascertain the functionality of oxidation at the...
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Vanillin and 2-aminophenol Schiff Base was synthesized in 1:1 mole ratio (HL1). Fe (II) and Ni (II) ions formed complexed with Schiff Base in 1:2. (Fe(HL1)2, Ni(HL1)2) and mixed ligand complexes of 2-aminsophenol with Schiff Base (Fe(HL1) (HL2), Ni(HL1) (HL2)) in 1:1:1 (L-M-L). The complexes were characterized by Solubility, Melting Point, Conductivity, FTIR and UV. The compounds were soluble in Acetone, Methanol,...
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Chemical inhibition of acetyl-cholinesterase has been the major strategy for the management of nerve-signaling related diseases like Alzheimer’s disease. Limited treatment options have driven the research into extracts from indigenous plants. In this study, the chemical constituents, anti-cholinesterase and radical scavenging potentials of the essential oil and the decoction water of a Nigerian variety of the medicinal...
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In the search for new drugs possessing the activities we have sought to synthesize new quinoline derivatives which constitute a basic heterocyclic support of some drugs such as quinine, chloroquine marketed under the name Nivaquine®, Mefloquine®, used in the treatment of malaria. The objective of this work is to contribute to the synthesis of new derivatives of quinoline. It consists in introducing heterocycles such as...
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Titanium (IV) oxide (TiO2) is used as a physical blocker of ultraviolet (UV) radiation in many skin-care products. Absorption of TiO2 through the skin is likely to interact with viable tissues because UV radiation absorption generates toxic reactive oxygen species such as hydroxyl radicals. Studies on the acute toxicity of TiO2 nanoparticles in mammals indicate that intra-tracheal instillation, intraperitoneal injection...
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The use of large quantities of synthetic dyes in the process industry mainly for colouring products has given rise to aqueous effluents containing high levels of this pollutant. Sugarcane bagasse, a by-product of sugar processing, was modified with benzoyl peroxide and sodium hydroxide independently. The unmodified and modified materials were characterized for their swelling ratio, pH of point zero charge, bulk density...
Characterization of divalent metal soaps of Cannabis sativa seed oil.
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In this study, the structural characteristics and thermal degradation behaviour of barium, calcium and zinc soaps of hemp seed oil prepared using the metathesis method are reported. Scanning electron micrographs of the metal soaps showed similar plate-like microstructures and are indicative of an orderly packed particulate structure. The thermal decomposition consisted of one single step on the weight loss – temperature...
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Phytochemicals are natural bioactive compounds found in plants, which are divided into two groups; primary and secondary compounds based on their functions in plant metabolism. The aim of this study was to evaluate, compare the phytochemicals and antimicrobial activities of spices commonly used in the production of readymade meals. The tests were conducted for nine spice species. Their extracts were tested for their...
Phytochemical Investigation of the Roots of Rumex nervosus
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Rumex nervosus belongs to the family of Polygonaceae, which is traditionally used in Ethiopia to treat various diseases. With the absence of previous scientific report on the roots of the plant, this study was focused on isolation of active compounds of root of Rumex nervosus. Ground root parts of Rumex nervosus were subjected to successively extract with petroleum ether and methanol. The solvent from each extract was...
Quality Evaluation Of Bottled Water Packaged Within Niger State, Nigeria
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Background: In the recent time, there has been proliferation of bottled water in Niger State due to inaccessibility of quality drinking water from other sources. This prevalence has led to the emergence of more entrepreneurs in bottled water production. Thus, this study aimed to evaluate the labeling information, physicochemical, and heavy metals composition of bottled water packaged in different regions of Niger State,...
Article in Press
Kinetics studies into the redox reaction and mechanism for the reactions of crystal violet (CV+) and MnO4– were carried out in aqueous acidic medium, at [CV+] = 1.6 X 10-5 mol dm-3, [MnO4-] = 8.0 x 10-4 mol dm-3 , [H+] = 2.0 x 10-3 mol dm-3, µ = 1.88 x 10-1 mol dm-3 (NaCl), T = 25.0 ± 1ºC and λmax = 580 nm. The stoichiometric studies showed that one mole of the crystal violet was found to be consumed by two mole...
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Global interest in lignocellulosic biomass as potential feedstock for conversion into biofuel is growing steadily because of the energy crisis the world faces. Lignocellulosic biomass can be sourced from agricultural residues, woody biomass, or some wasteland weeds. In this study, the physicochemical characteristics and theoretical bioethanol yields of Lantana camara and Parthenium hysterophorus has been determined to...
Article in Press
Aflatoxin contamination of groundnut is a major hazard to human and animal health and is one of the major constraints to the groundnut trade. Risks related to human health and declining productivity in livestock after consuming aflatoxin-contaminated feed have led to groundnut importing countries setting standards that allow only extremely low levels of contamination and that are often not achievable by most resource-poor...
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Excessive accumulation of nitrate and nitrite is a major cause of water pollution, air pollution and various health hazards. Hence, it is important to know the amount of these anions in environmental samples. In this study, the levels of nitrate and nitrite were investigated in soil and water in Adami Tulu Judo Kombolicha District, Oromia, Ethiopia. Levels of the anions were determined by UV-Visible spectrophotometer....
Determination Of Interaction Sites Of Purine And Its Derivatives In Xanthine Oxidase Enzyme
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The role of Moco in xanthine oxidase enzyme is to position Mo correctly within the active site, control the redox behavior of the enzymes, allow the enzyme to gain its biological activity, and participate with its pterin ring system in the electron transfer to or from the molybdenum atom. The purpose of the study is to determine the interaction sites of different substrates in the binding pocket amino acid residues at...
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Lake Victoria is the largest freshwater and fishery lake in Africa. Kisumu City, located at the shore of Winam Gulf has industrial activities discharging effluents into the lake with potential of contaminating the lake water with heavy metals. The contribution of these activities to heavy metal loads of lake water and fish from the gulf is not fully quantified. The assessment of the influence of the surrounding...
A Review on Nanotechnology: Analytical Techniques Use and Applications
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The combination of nanotechnology with molecular biology, information technology and instrumentation, is opening the door to a new industrial age. The aim of this review article is to summarize the current knowledge of nanotechnology in synthesizing, identifying and characterization of nanomaterials using analytical techniques. Physical and chemical approach synthesis of nanomaterials befalls challenges in the development...
Extraction and Characterization of Essential Oil from MyrtusCommunis
Article in Press
Myrtuscommunis L. is commonly known as “Ades†in Ethiopia and is a popular evergreen shrub plant grown in many regions of world. Myrtuscommunis essential oils have a potential to be used in pharmaceutical and cosmetic/perfumery industries as well as in aromatherapy and alternative medicines. With such applications, there is a huge demand for Myrtuscommunis essential oils worldwide. Hence, there is a need to improve the...
Article in Press
This study involves determination of the levels of heavy metals and some physio-chemical parameters in cabbage and irrigation water in selected Woredas of Gurage Zone, Ethiopia. The heavy metals assessed in this study are Manganese (Mn), Zinc (Zn), Copper (Cu), Chromium (Cr), Nickel (Ni) Cadmium (Cd) and Lead (Pb). The Cabbage (Ethiopian Kale) samples were weighed to determine the fresh weight and dried in an oven at 80 oC...
Article in Press
Carbon Nanotube: A Review on Synthesis, Growth Mechanism and Application as a Membrane Filter for fluoride remediation
Article in Press
In this study, we reported a combined experimental and theoretical study on 3-ethyl-4-(4-cinnamoyloxybenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-one compound. The title compound was prepared and characterized by 1H and 13C NMR and FT-IR spectra. The molecular geometry, gauge including atomic orbital (GIAO), 1H and 13C NMR chemical shift values, vibrational frequencies and HOMO–LUMO analyses properties of the title...
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The inhibition performance of [(4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-phenyl-methyl]-urea and [(4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-(4-methoxy-phenyl)-methyl]-urea were investigated as corrosion inhibitors using density functional theory (DFT) at the B3LYP/6-31+ G(d,p) level of theory. The calculated quantum chemical parameters correlated to the inhibition of efficiency. The molecular descriptors have been analysed...
Article in Press
People all over the world suffer from certain illnesses such as skin disease, cancer as well as liver, kidney and skin damage. Some of these diseases are believed to be associated with certain trace metal. Trace metals are present in plant and animal cells and tissues as they are necessary part of nutrition and physiology. Ingestion of, or exposure to, excess quantities of these metals is often toxic. However, insufficient...
Article in Press
The effect of oxidation, acetylation and boric acid treatment and varying concentrations (30, 40 and 50%) of alcohol-alkaline (NaOH/alcohol) modifications on the cold water solubility (CWS), amylopectin and amylose content of starches extracted from cassava, potato and corn were evaluated and compared. The studies were carried out using the determination of cold water solubility (CWS), amylose-amylopectin content and light...
Article in Press
Mineral systems of kaolinite, montmorillonite, kaolinite and their mixtures injected with pyrite were investigated for copper and zinc removal. This study was related to simulated contaminated waters. Reactivity and removal kinetics were studied at room temperature (23 ± 2°C). The results of the empirical model revealed that, proton coefficient of mineral systems exhibited complex behavior. Kinetic model revealed that...
Study of physico-chemical and thermodynamic parameters of potassium iodide in Oil-DMF solvent
Article in Press
The physico-chemical properties namely viscosity (η), surface tension (γ), conductance (Κ), molar conductance (μ), and thermodynamic parameters like enthalpy change of activation (ΔH*), entropy change of activation (ΔS*), free energy change of activation (ΔG*), molar heat capacity change at constant volume (ΔCv) and molar heat capacity change at constant pressure (ΔCp) of potassium iodide solutions in varying...
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