Research Papers/Topics in Chemistry

PRELIMINARY DETERMINATION OF THE ACTIVE COMPONENTS IN BITTER LEAF ROOT (VERNONIA AMYGDALINA) EXTRACTS IN THE TREATMENT OF DIABETES MELLITUS

ABSTRACT This research work is on the preliminary determination of active components in bitter leaf root (vernonia amygdalina) in the treatment of diabetes. Deficiency of hormone (insulin) causes diabetes mellitus, a disease due to too much of sugar being present in the blood. This is because without insulin in the body, the result is that sugar is extracted in the urine. Consequently, fat and proteins are readily converted to carbohydrates and finally, glucose eventually. The body re...

Effect of EDTA on Tomatoes Plants Seedlings Under Nickel Toxicity

CHAPTER ONE1.0 INTRODUCTION 1.1     NICKEL1.1.1  Occurrence         Nickel (Ni) is a metallic element,with atomic number 28; atomic weight 58.69. Is a metal, which belongs to group VIIIB of the periodic table. The most important oxidation state of nickel is +2, although the +3 and +4 oxidation states are also known (Tundermann et al., 2005). Nickel resembles iron, cobalt, and copper in its chemical properties. However, unlike cobalt and iron, ...

RELEASE KINETICS OF CYMBOPOGON CITRATUS ESSENTIAL OIL FROM STARCH BEADS

ABSTRACT The essential oil of Cymbopogon citratus was extracted using a green method (i.e. essential oil still), encapsulated into cassava starch matrix using sodium alginate as a binder. The encapsulated sodium alginate starch beads were characterized using Scanning Electron Microscope (SEM) and Fourier Transform Infrared Spectrophotometer (FTIR), release kinetics of the oil was monitored by UV-Visible Spectrophotometry from two (2) aqueous media, buffer of pH 4 and pH 9. The re...

THE MECHANOCHEMICAL AND SOLVENT – BASED SYNTHESIS AND CHARACTERIZATION OF 3,4,5-TRIHYDROXYLBENZOIC ACID CU(II) COMPLEXES.

Mechanochemical synthesis of  [Cu(OOCCH3)2(THB)2] and the Mechanochemical synthesis of  [Cu(OOCCH3)2(THB)2] were carried out, and a  brown solid complexes obtained in both experiment was washed in ethanol respectively. The  physical and instrumental characterisation of the complexes carried out revealed that the complexes obtained are the same

Quantitative Analysis of Carotene and Ascorbic acid from Carrot, Cucumber, Eggplant and Tomatoes

ABSTRACTSpectroscopic method was used to determine quantities of carotene and ascorbic acid in carrot, cucumber, eggplant and tomatoes. The result shows that carrot has higher concentration of carotene =0.1430, follow by eggplant = 0.6950 and tomatoes = 0.0368 and cucumber has the least concentration of carotene =0.0139. The result also show carrot has higher concentration of ascorbic acid 0.958×10-4 mol/d3 follow by tomatoes 0.944×10-4 mol/d3 and eggplant 0.943×10-4 mol/d3 cucumber 0.90...

POLLUTION INDICES OF TRACE METALS IN ROADSIDE SOIL

ABSTRACT   Roadside soil samples were obtained from Eka Street, Oron Road, Ikot Ekpene Road and Nwaniba Road within Uyo metropolis, Akwa Ibom State. Roadside soils were also obtained from Uwana Lane and used as Control. These samples and Control were analysed for the concentration of Cadmium (Cd), Nickel (Ni), Lead (Pb), Zinc (Zn) and Iron using Atomic Absorption Spectrophotometer (AAS) unicam 939 model. Results obtained indicated the following mean concentration (mg/kg) for ...

DIRECT SPINNING OF CARBON NANOTUBE FIBRES FROM CHEMICAL VAPOUR SYNTHESIS.

Carbon nanotube, CNT, is a one dimensional sp2 allotrope of carbon with cylindrical nanostructure and high aspect ratio (length in microns and diameter in the nanometer order). They could exist as either single-walled nanotube (SWNT) or Multi-walled nanotube (MWNT), depending on the number of layer(s) present. CNTs drawn into fibres shows outstanding mechanical and electrical properties which give them edge in applications such as composites, electrodes, mechanical actuato...

Studies on heavy metals contents of Osun River at the pre-urban settlement and across Osogbo City, Nigeria

Heavy metals were analysed in Osun River (Nigeria) between 2017 and 2018. Concentrations of the heavy metals were in the increasing order: Fe > Zn > Cu > Mn > Pb > (Ni, Cr) > (Cd, Co). Iron made up 76% of the total heavy metals measured. Activities at Swanlux Farm (a major oil palm farm) seemed to impart on Osun River as the highest Fe concentration (2.55 mg/L) was measured near the farm. In the urban settlement, average zinc concentration was almost double (0.37 mg/L) of that found i...

Effect of Phosphorus fertilizer on growth and yield of cowpea

                         i.            Abstract Four types of soil are found in Liberia. Latosols of low to medium fertility occur in rolling hill and cover about three-fourths of the total land surface. Shallow, coarse lithosols, in the hilly and rugged terrain, cover about one-eighth of the land. Infertile regosols, or sandy soils, are found along the coastal plain...

ACID RAIN; THE NUISANCE OF VEHICULAR EMISSIONS

ABSTRACT Acid rain is a mixture of sulfuric acid and nitric acids depending upon the relatively quantities of oxides of sulfur and Nitrogen emissions. Theses emissions are from the exhaust pipe or smokestacks of our vehicles and others like power stations, generators, appliances and so on. Acidification of water bodies causes large scale negative impact on aquatic organism including fishes; acidification has an indirect effect on humans. It has effect on the ecosystem and causes ...

HEALTH IMPLICATION ASSOCIATED WITH THE USE OF COSMETICS

Abstract Cosmetics are care product applied to the body or face to improve appearance. The concept of beauty and cosmetics is old as mankind and civilization. Assorted beauty and cosmetics product such as skin care product, fragrance, oral hygiene, and nail product, which may contain toxic chemicals that can be harmful to health are used especially by women. The bioaccumulation of this harmful chemicals and metals in the body overtime has been associated with different signs of i...

In Vitro Evaluation of Metal Chelating and Ferric Reducing Potentials of Methanol Extracts of Adasonia digitata Leaf

ABSTRACTAdansonia digitata L. (Malvaceae) is commonly known as baobab tree native to Africa. Baobab is a multi-purpose tree which offers protection and provides food, clothing and medicine as well as raw material for many useful items. This study aims to elucidate the metal chelating and ferric reducing potentials of methanol extracts of Adansonia digitata L. (Malvaceae) leaf using in vitro model. Phytochemical screening was carried out on the extract and it showed that the extract ...

CHARACTERISATION OF ESSENTIAL OIL FROM LEAVES OF Euphorbia heterophylla AND ITS INSECT REPELLENT POTENTIAL

This study aimed at characterizing essential  oil  from leaves of  E.heterophylla and its insect repellent potential. Essential oil from fresh leaves of  E.heterophylla was extracted by  hydro distillation method, using a  Clevenger apparatus for 4 hours and the  yield was 0.1816%w/w. Repellence  test was conducted by  using 5 cockroaches in number which were  placed in a modified Y-tube Olfactometer and observations recorded for  each an...

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