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Articles by L.G. Hassan
Total Records ( 4 ) for L.G. Hassan
  L.G. Hassan , K.J. Umar and I. Atiku
  The present study was conducted to find out the nutritional composition of Albizia lebbeck seeds and pods intended to be used as component in livestock feeds. The dried pods were sampled within the premises of the Usmanu Danfodiyo University, Sokoto between the periods of February to March, 2004. Seeds were separated from their pods manually and milled separately. The powdered samples were analysed for proximate and mineral contents. The results of the experiments showed seeds have the following composition: Dry matter (DM), 89.89±0.09%; ash content 4.50±0.62%; crude protein, 10.06±0.04%; crude lipid, 9.48±0.02%; crude fibre, 8.01±0.09%, Nitrogen Free Extract (NFE), 67.95±2.02%. The corresponding values for pods are: 12.00±1.85, 10.00±0.18, 5.38±0.03, 0.74±0.04, 3.25±0.05 and 80.63±1.15%, respectively. The samples generally have high calorific value 397.36±1.84 and 350.72±0.45% respectively. The crude protein, crude lipid, crude fibre contents and calorific value were significantly higher (p<0.05) in seeds compared to those of pods. Ash content and Nitrogen Free Extract (NFE) were however significantly higher (p<0.05) in pods. The dry matter content shows no significant variation (p>0.05) between the two samples. For mineral analysis, both samples have appreciable amounts of mineral elements such as K, Na, Ca, Mg, P, Cu, Fe and Zn with seeds sample having significant (p<0.05) concentration of Na, Ca and Fe; while pods contain significantly higher amount of K, Mg, P, Zn and Cu. From the results it can be concluded that Albizia lebbeck seeds could be an important protein supplements while pods as an important source of micronutrients for feed formulation.
  K.J. Umar , L.G. Hassan , S.M. Dangoggo , M. Inuwa and M.N. Almustapha
  Melochia corchorifolia leaves were analysed for their proximate and mineral composition. On Dry Weight (DW) basis, the leaves had the following proximate composition: crude protein (23.31±2.27%), crude lipid (13.33±2.89%), ash (10.00±0.10%), crude fibre (23.33±2.89%) and available carbohydrate (30.03±2.83%). M. corchorifolia leaves had high moisture content (62.16±6.11% Wet weight) with low energy value (275.66±23.20 kcal/100 g). The mineral composition in mg/100 g DW are: K (7.250±37.50), Ca (750.37±10.58), Mg (108.33±5.77) and P (101.89±0.08), Na (94.00±1.15), Cu (33.50±2.55), Fe (19.91±3.01), Mn (9.68±0.59) and Zn (6.73±0.62). When the minerals detected were compared with US Recommended Dietary Allowances, K, Cu, Fe and Mn were found to be adequate for both adults and children. Furthermore, the leaves have nutrient density >100% except for phosphorus, which is low for pregnant and lactating mothers.
  K.J. Umar , L.G. Hassan , S.M. Dangoggo and M.J. Ladan
  Analyses of the nutritional composition of water spinach (Ipomoea aquatica) Forsk leaves were carried out using standard methods of food analysis. The proximate composition as well as mineral elements were determined. The leaves were found on dry weight basis to have high moisture (72.83±0.29%), ash (10.83±0.80%), crude lipid (11.00±0.50%), crude fibre (17.67±0.35%) and available carbohydrate (54.20±0.68%), but low in crude protein content (6.30±0.27%). The leaves also have energy value (300.94±5.31 kcal/100 g) that is within the range reported in some Nigerian leafy vegetables. The mineral element contents were high with remarkable concentration of K (5,458.33±954.70 mg/100 g) and Fe (210.30±2.47 mg/100 g). Also the leaves content moderate concentrations of Na (135.00±2.50 mg/100 g), calcium (416.70±5.77 mg/100 g), Magnesium (301.64±12.69 mg/100 g) and P (109.29±0.55 mg/100 g), with low Cu (0.36±0.01 mg/100 g), Mn (2.14±0.22 mg/100 g) and Zn (2.47±0.27 mg/100 g) contents. Comparing the mineral content with recommended dietary allowance, it was showed that the plant leaves is good sources of K, Mn and Fe for all categories of people, while Mg is adequate enough for adult female and children. From the result, Ipomoea aquatica Forsk leaves could be used for nutritional purposes, due to the amount and diversity of nutrients it contains.
  S.W. Hassan , M.J. Ladan , R.A. Dogondaji , R.A. Umar , L.S. Bilbis , L.G. Hassan , A.A. Ebbo and I.K. Matazu
  The leaves of Erythrophleum africanum is known in the arid land of tropical Africa to posses toxicological properties. Phytochemical, acute and sub-acute evaluation of the possible toxicity risk of E. africanum aqueous leaves extracts were investigated in this study. Phytochemical constituents detected in the leaves extracts were saponins (1.16% w/v), cardiac glycosides, tannins (0.17 true tannins and 0.23% w/v pseudotannins), flavonoid glycosides, free flavonoids and alkaloids (4.34% w/v). The Lethal Dose (LD50) of the aqueous leaves extracts was greater than 3000 mg kg-1 per os (orally) in albino rats. Sub-acute administration of the extract for 28 days resulted in significant (p<0.05) changes in some renal and liver indices at 3000 and 2000-3000 mg kg-1 body weight, respectively. Histopathological lesions of the kidney and liver in form of moderate and marked infiltration with necrosis and perivascular lymphocytic cuff were observed. The observed lesions could be due to roles played by liver and kidneys in metabolism of xenobiotics and their elimination from the body. These investigations thus seem to indicate the toxic effects of the aqueous leaves extracts of E. africanum at 2000-3000 mg kg-1. These could be attributed to the combined toxicity of the phytochemical constituents such as tannins, saponins, glycosides and alkaloids.
 
 
 
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