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Asian Pacific Journal of Tropical Biomedicine 2011年第5期1卷 353-358页

作者： Oyedemi SO Adewusi EA Aiyegoro OA Akinpelu DA School of Biological Sciences University of Fort Hare Department of Microbiology Obafemi Awolowo University

Objective:To investigate the antidiabetic properties of aqueous extract of stem bark of afzelia africana(***)and its beneficial effect on haematological parameters in streptozotocin induced diabetic ***:A total of 30 rats including 24 diabetic and 6 normal rats were used for this *** was induced in male Wistar rats by intraperitoneal injection of *** being confirmed diabetic,animals were orally treated with distilled water or extracts at 100 or 200 mg/kg body weight daily for 10 *** haematological parameters including red blood and white blood cells and their functional indices were evaluated in diabetic treated groups compared with the ***:The extract significantly reduced the blood glucose levels while the best result was obtained at 200 mg/kg body weight The feed and water intake in diabetic rats were significantly reduced while weight loss was minimized at both ***,the levels of red blood,white blood cells and their functional indices were significantly improved after extract administration at both ***:It can be concluded that the aqueous extract of bark of *** possesses antihyperglycemic *** addition,the extract can prevent various complications of diabetes and improve some haematological *** experimental investigation is needed to exploit its relevant therapeutic effect to substantiate its ethnomedicinal usage.

关键词： afzelia africana Diabetes mellitus Haematology Antidiabetic property Aqueous extract Beneficial effect Haematological parameter Ethnomedicinal usage Wistar rat

Coag-Flocculation Studies of afzelia Bella Coagulant (ABC) in Coal Effluent Using Single and Simulated Multi Angle Nephelometry

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Journal of Minerals and Materials Characterization and Engineering 2011年第3期10卷 279-298页

作者： M.C. Menkiti O.D. Onukwuli Department of Chemical Engineering Nnamdi Azikiwe University Awka Nigeria.

Following the need for the use of environmentally friendly, renewable resource in industrial processes, this work explores the potential of an effective application in pilot scale of afzelia bella seed as a coag-flocculant. The study evaluates the coag-flocculation efficiency and functional kinetic parameter response to varying pH and dosage of coal washery effluent and ABC respectively. The maximum coag-flocculation performance is recorded at rate constant, K of 3.3333 x 10-3m3/kg.s, dosage of (0.3 and 0.2kg/m3);pH of 2 and coagulation period, τ1/2of 28.1216 s while the minimum is recorded at K of 1.6667 x 10-4m3/kg.s, dosage of 0.2kg/m3, pH of 10 and τ1/2 of 562.365 s. The least value of coag-flocculation efficiency, E (%)>89.00. Simulated and unsimulated values of rate constants Ks and K respectively are in close agreement, validating the concept of perikinetics. The potential of ABC as an effective organic coag-flocculant has been established. The results confirm that theory of rapid coagflocculation holds for the aggregation of coal washery effluent using ABC and at the conditions of the experiment.

关键词： afzelia bella coag-flocculation coal effluent kinetics nephelometry.

Assessment of Physicochemical Properties, Fatty Acid Composition of afzelia africana Seed Oil and the Effect of Its Oil-Based Diet on Body Weight and Plasma Lipid Profile of Albino Rats

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Food and Nutrition Sciences 2018年第8期9卷 983-996页

作者： Itunu Oluwatosin Ajiboye Olubunmi Bolanle Ajayi Seun Funmilola Akomolafe Omotola Opeyemi Adelaja Department of Biochemistry Ekiti State University Ado Ekiti Nigeria

In the present study, the physicochemical properties, fatty acid composition of afzelia africana seed oil were determined and also effect of the oil-based diet on growth performance and plasma lipid profile were monitored using twenty Wistar albino rats allocated into two groups of ten rats each. The control group was fed with soybean-based diet while afzelia africana oil-based diet was fed to the test group ad libitum for 28 days. Results showed the acid, saponification, iodine, and peroxide values of the oil to be 3.30 ± 0.27 mg/KOH/g oil, 124.54 ± 0.79 mg/KOH/g oil, 11.17 ± 0.39 g/100 g, and 10.01 ± 0.53 meq/g respectively. Also, linoleic (53%) and oleic acids (21.34%) were found to be the predominant unsaturated fatty acids present, while the predominant saturated fatty acid present is Palmitic acid (14.78%). The body weight of the experimental rats maintained on diet formulated with afzelia africana seed oil was reduced compared to the rats fed with control diet. The plasma concentration of triglycerides and high density lipoprotein was not significantly different (p afzelia africana oil-based diet. The decline in plasma total cholesterol levels suggests good quality of the oil. The various parameters investigated reveal the potentials of afzelia africana seed oil and could serve as a good diet supplement.

关键词： afzelia africana Fatty Acids Oils Lipid Profile Physicochemical Polyunsaturated Fatty Acids (PUFAs)

Preliminary Investigation on Flowering and Fruiting Pattern in a Plantation Grown afzelia africana Sm Stand in Umuahia, Nigeria

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American Journal of Plant Sciences 2015年第1期6卷 219-227页

作者： Joseph O. Ariwaodo Joy L. Harry-Asobara Forestry Research Institute of Nigeria Eastern Research Station Umuahia Nigeria

Research work on the improvement and breeding of indigenous hardwood species in Nigeria started about four decades ago. Such studies prove to be fruitful in planning various conservative programme specific to different habitats. The present preliminary study focuses on the flowering and fruiting pattern of a 5 year old afzelia africana artificial forest at Eastern Research Station, Umuahia, Abia State, Nigeria. The parameters observed were phenology, flowering intensity, floral biology, fruit set and floral visitors. Flowering was first observed in 2012 (three years after planting) and subsequently in 2014 (five years after planting), although no fruit was set until 2014. All the processes of flowering to fruiting took place between January to August, with flowering peak occurring in March. The flowering intensity was very low, ranging among 286, 138, and 54, with a very low flower to fruit ratio. It is presumed that the relative young age of the trees and reduced population size amongst other probable factors may have accounted for this observation. This study is the first record of flowering and fruiting pattern of this species at plantation level in Nigeria. By late July/August, matured fruits were ready for harvest.

关键词： afzelia africana Floral Biology Phenology Pollination Reproductive Biology