Abstract Phytochemical screening of the stem bark of Zingiber officiale revealed the presence of tannins,flavonoids and alkaloids. The bark of this species was macerated with 95% ethanol. A silica gel column developed with chloroform:methanol(3:2;v:v) gave apure flavonoid compound I. The structure of this isolate was elucidated using UV and IR data and The following partial structure was proposed:
ABSTRACT The aim of this study is to measure the levels of serum electrolytes, trace elements and total iron binding capacity (TIBC) in Sudanese patients with leukaemia and to investigate the levels of these elements in leukaemia subtypes, in age, sex and related differences. Total of 201 persons were included; 79 (control group) and 122 (leukaemia patients). Serum electrolytes Na+,K+, Ca2+, Mg2+ and PO43- levelsanalysed by spectrophotometer. Trace elements Zn2+, Cu2+, Mn2+, Co3+ and TIBC by ...
ABSTRACT In this study, proximate analysis, jar test, turbidity, pH measurement and microbial count were carried out, to evaluate the coagulation and antimicrobial activities of Moringa oleifera seeds. Defatted Moringa oleifera seeds obtained by solvent extraction of Moringa oleifera seeds powder used n-hexane and seed cake was dried. Protein was obtained by extraction used NaOH. Results of this study revealed that seeds powder is rich in lipids (33.33%) and has carbohydrate, protein, moistu...
Abstract The aim of this study is to investigate the quantity of Solanum dubium seeds oil and study some physio-chemical properties of the extracted oil. The results show the oil yield was (50%), fatty acid composition was (75%), phytochemical screening of the seed powder show higher Alkaloids contents (+ + +), moderate Flavinoid composition (+ +), low tannin content (+) and free of Saponine, Cumarin, Steroids, and Anthraquinones. Investigation of the chemical properties show the Saponifica...
Abstract Rice husk (RH) was collected from a rice mill in central Sudan and was used as a dual source for silica and cellulose. Amorphous silica was extracted from rice husk ash (RHA) through chemical treatment with nitric acid (3M) and combustion. It was then used to extract amorphous silica through dissolution in aqueous alkali solutionvNaOH (1M) and subsequent gelation in acidic medium following the sol-gel process. Pure cellulose was obtained from RH after complete removal of lignin and h...
Abstract Polyethylene/silica Nano composite was synthesized in different concentrations (2%, 3%, 4%, 10%, 20%, 30%, 40%, and 50%) The samples were subjected to physical evaluation; the result showed that the amount of silica is changed the optical properties (the maximum absorbance was 284 nm) and the composite had moderate refractive index in infra red region but it is de- shielding in part of ultra violet region. Mechanical properties was enhanced .the highest load was 5.4kg to sample...
Abstract The aim of this study was the extraction and analysis of spearmint and eucalyptus volatile oils. The samples were collected from shambat farms (Khartoum north). The results showed that the Saponification numbers were (24.41, 22.44), acid values were (0.5611, 0.8417), ester numbers were (23.85, 21.60) and peroxide numbers were (0.01, 0.035), Refractive index values were (1.483, 1.473), density (0.755, 0.66) g/cm3 for spearmint and eucalyptus oils respectively. The IR analysis results...
ABSTRACT Unique properties of silver (Ag) and its allied nanoparticles are of great interest in the fields of chemistry and technology. However, the widespread applications of nanoparticles call for synthesis routes involving eco-friendly procedures. Silver nanoparticles (Ag NPs) and their hybrids nanoparticles (Ag-Ni and Ag-Co) were synthesized using locally available biodiversity plants as alternative method to the expensive and toxic chemicals previously used. Fresh plants were collected ...
ABSTRACT Mosquitoes transmit devastating diseases that kill millions of people each year. The adverse effects on human health, well being and high economic losses inflicted by mosquitoes, the malaria vector, is an important stimulant for the search for new, safe and effective mosquito larvicides. The pool of natural products is an important source of such larvicidal metabolites. Fungi have extensive secondary metabolites at their disposal, and some could be active against the mosquito larvae...
ABSTRACT Tick borne diseases have severe consequences on the health of millions of cattle worldwide and cause serious economic losses. Synthetic drugs have been effective acaricideshowever they are expensive, show side effects and develop resistance.This has generated interest in the use ofplant based acaricides, which however seem to offer a reliable, cheap and cost effective methods. In this research, the acaricidal activityof Acokanthera schimperi secondarymetabolites againstRipicephalus....
ABSTRACT This study involved isolation of compounds from the plant Monanthotaxis littoralis, screening and evaluating the activity of the compounds against mycotoxigenic fungi isolated from maize collected from LVB and structure elucidation of the bioactive compounds. The non volatile secondary metabolites were extracted from the plant using methanol. The methanol extract was suspended in water and extracted with ethyl acetate. Hydro-distillation was used in the extraction of essential oils....
ABSTRACT In Africa, 80% of the population use traditional medicinal plants to treat common ailments like malaria, headache and pneumonia. This is due to the high cost of conventional drugs from developed countries. Examples of these medicinal plants include Gardenia volkensii and Meyna tetraphylla that are both used by the Pokots in Kenya to treat a variety of ailments including antimicrobial diseases. The aim of this project was to test for the antimicrobial activity of the crude extracts a...
ABSTRACT The prevalence of multi-drug resistant tuberculosis is an increasing health challenge. Attention has therefore been shifted to the use of ethno-medicines in combating this disease. Traditionally, Syzygium guineense (stem-bark) and Mimosa pigra (aerial parts) are used in the treatment of respiratory tract infections with no scientific justification. This study was designed to identify the constituents of Syzygium guineense and Mimosa pigra that may be active against Mycobacterium tub...
ABSTRACT A major requirement in flame spectroscopic methods is that the sample be introduced into the excitation source in form of an aqueous solution. Unfortunately, many materials of interest such as soils, animal tissues, plants, petroleum products and minerals are not directly soluble in water and extensive preliminary treatment is often required to obtain a solution of the analyte in a form ready for atomization. On the other hand, some samples contain both organic and inorganic matrice...
ABSTRACT Chemically, the Rutaceae family is probably the most versatile of all higher family of plants. Three main groups of compounds, namely, limonoids, coumarins and quinoline alkaloids have been obtained from this family. The LLtroductory part of this work reviews very briefly the chemistry of each of these groups. In the main work, three plants of the West African genera of the Rutaceae were investigated. The wood of Afraegle paniculata (Schum and Thonn) yielded the furocoumarLD, imJ£er...