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Articles by U.C. Okorie
Total Records ( 2 ) for U.C. Okorie
  N.A. Obasi , U.C. Okorie , B.N. Enemchukwu , S.S. Ogundapo and G. Otuchristian
  The numerous ethno-medicinal applications of Picralima nitida plants have called for a high thorough-put investigation of all the parts of the plant including the peel that is usually discarded in order to ensure maximum utilization of the plant. In this study, nutritional evaluation, phytochemical screening and antimicrobial effects of Picralima nitida peel were carried out using standard methods, in order to determine the potentials of this discarded part of the plant. The results of proximate contents indicated the following: moisture (49.6%), ash (16.0%), crude fibre (10.5%), crude lipid (7.4%), crude protein (28.4%) and carbohydrate (37.7%) while its calorific value is 265.8 kcal/100 g. Thus, the nutritional value of Picralima nitida peel is high and as such it could be used as feed additives. The results of phytochemical screening revealed the presence of flavonoids, saponins, tannins and alkaloids and the aqueous extract had antimicrobial activities against Escherichia coli and staphylococcus aureus with varying degrees. The most potent inhibitory effect was observed with Escherichia coli. These results have revealed that the peel and its extracts have pharmacological active compounds and antibacterial effects and as such could be used in ethno-medicine for the treatment of microbial infection and other ailments.
  N.A. Obasi , Joy Ukadilonu , Eberechukwu Eze , E.I. Akubugwo and U.C. Okorie
  Proximate composition, extraction, characterization and comparative assessment of Cocos nucifera and Colocynthis citrullus seeds and seed oils were evaluated in this work using standard analytical techniques. The results showed the percentage (%) moisture, crude fibre, ash, crude protein, lipids and total carbohydrate contents of the seeds as 7.51 and 4.27, 7.70 and 5.51, 1.02 and 2.94, 10.57 and 11.67, 47.80 and 50.42 and 32.84 and 29.47 while the calorific values were 553.99 and 567.32 Kcal/100 g for C. nucifera and C. citrullus, respectively. The two seed oils were odourless and at room temperature (30°C) liquids, with a pale yellow to yellowish colouration. Lipid indices of the seed oils indicated the Acid Values (AV) as 2.06-6.36 mg NaOH g-1 and 2.99-6.17 mg NaOH g-1, Free Fatty Acids (FFA) as 1.03-3.18 and 1.49-3.09%, Saponification Values (SV) as 252.44-257.59 and 196.82-201.03 mg KOH g-1, Iodine Values (IV) as 9.73-10.99 and 110.93-111.46 mg of I2 g-1 of oil and Peroxide Values (PV) as 0.21-0.21 and 1.53-2.72 mg O2 kg-1 for soxhlet-mechanical extracted C. nucifera and C. citrullus seed oils, respectively. The studied characteristics of the oil extracts in most cases compared favourably with most conventional vegetable oils sold in the Nigeria markets; however, there were some observed levels of significant differences in the values at p≤0.05. These results suggest that the seeds examined may be nutritionally potent and also viable sources of seed oils judging by their oil yield. The data also showed that the seed oils were edible inferring from their low AV and their corresponding low FFA contents. Industrially, the results revealed the seed oils to have great potentials in soap manufacturing industries because of their high SV. They were also shown to be non-drying due to their low IV which also suggested that the oils contain few unsaturated bonds and therefore have low susceptibility to oxidative rancidity and deterioration as confirmed by their low PV which also serves as indicators of the presence or high levels of anti-oxidants in the oils.
 
 
 
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