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Articles by K.E. Ekpo
Total Records ( 4 ) for K.E. Ekpo
  K.E. Ekpo and A.O. Onigbinde
  Proximate and chemical analyses was carried out on the larva of Rhynchophorus phoenicis (F) and the observed results used to assess it nutritionally. A high fat content ( 25.30±0.20% wet weight ) rich in the essential fatty acids was observed, while all the essential amino acids were detected in varying amounts in the protein component. Macro-elements like sodium (773.49±1.02 mg/100g), calcium (60.81±0.32 mg/100g) and potassium (26.65±0.24 mg/100g) as well as micro-elements like copper (1.26±0.04 mg/100g), cadmium (0.039±0.022 mg/100g) and zinc (10.57±0.89 mg/100g) were present in significant amounts in the insect larva. The insect larva could form a base for new food /feed products of considerable nutritive value, especially if some level of defatting is done to further increase the relative proportion of the protein component.
  K.E. Ekpo and A.O. Onigbinde
  Macrotermis bellicosus (a reproductive form of winged termite) oil was extracted, and the oil was physically and chemically characterized. The lipid content of the insect was 31.46±0.57 (wet weight). The oil was a clear, odourless liquid, of a light yellow colour and it was fluid at room temperature (26±2oC). Lipid analysis revealed that the insect oil comprised 69.87±0.73% neutral lipid, 19.14±0.06% phospholipid and 10.81±0.40% glycolipids. Further analysis revealed a refractive index of 1.20±0.01, specific gravity of 0.90±0.01, solidification value of 10-14oC, total lipid phosphorus of 47.18±0.03 (mg/g lipid), acid value of 3.60±0.06, iodine value of 108.00±0.15, saponification value of 193.40±0.31, unsaponifiable matter of 12.04±0.11, free cholesterol of 8.73±1.01 (mg/100g lipid) and total cholesterol of 47.18±0.03. The unsaturated fatty acids accounted for 51.02% of the total fatty acids whereas the saturated fatty acids constituted 48.98 % of the fatty acids. These values when compared with that observed in oils which have been considered to be of high quality, suggest that Macrotermis bellicosus oil has potentials that could be exploited by the nutritional and pharmaceutical companies.
  M. Ugbenyen Anthony , A. Odetola Adebimpe and K.E. Ekpo
  The study was designed to investigate the antioxidant potential of Magnifera indica young leave methanolic extract in alloxan induced diabetic rat. Albino rats each weighing 100-200g were given a peritoneal injection of 120mg of Alloxan per kg body weight. After 7 days the blood glucose level of the animals were checked to ascertain a diabetic state. Those that were diabetic were selected for the study. Significant increase (p<0.05) in lipid peroxidation and reduction in reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CAT) was observed in the serum, liver, kidney and heart of diabetic rats as compared to the normal control. Administering Magnifera indica young leave extract significantly reduced (p<0.05) lipid peroxidation and elevated the level of GSH, SOD, and CAT in serum, liver, kidney and heart of diabetic rats compared to untreated diabetic rats. These findings indicate that Magnifera indica young leave extract can reduce free radical mediated oxidative stress to cells in experimental diabetes mellitus.
  T.P. Prohp , K.E. Ekpo , E.V. Osagie , A. Osagie and H. Obi
  The levels of polyphenol and activities of polyphenol oxidases in some Nigerian kolanuts were investigated. Garcina cola had the least polyphenol content of 15.60±1.70 (mg/g), while Cola nitida (red) recorded the highest value of 33.50±2.51mg/g. Polyphenol oxidase from Garcina cola had its optimum pH of activity in the acidic region (pH 3), but the white and red species of Cola nitida had a neutral (pH 7) optimum pH. With catechol as substrate, polyphenol oxidase activity was highest in Cola nitida (white) (55.70±2.60) and lowest in Garcina cola (2.22 ± 0.04). Whilst the values of polyphenol obtained may explain the high incidence of enzymatic browning in some Nigeria kolanuts, the white cultivar of Cola nitida could be further explored as a good source of polyphenol oxidase.
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