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Articles by O. Olaofe
Total Records ( 4 ) for O. Olaofe
  M.O. Aremu , O. Olaofe , E.T. Akintayo and E.I. Adeyeye
  Foaming capacity and stability, water absorption capacity; emulsion capacity and stability; and least gelation concentration of kersting`s and bambara groundnut flours as influenced by types of salt (NaCl, NaNO3, NaNO2, CH3COONa and Na2SO4) and their concentrations were investigated using standard techniques. The results showed that the highest foaming capacity was recorded for CH3COONa at 15.0% (w/v) salt concentration in kesting`s groundnut while lowest was NaNO2 at 0.5% (w/v) in bambara groundnut flour. Foaming stability values after 8h were types of salt and salt concentrations dependent. The water absorption capacity decreased at various salt concentrations compared with value in distilled deionized water. The best salts for water absorption capacity were NaNO2, CH3COONa and Na2SO4 particularly at 0.5% (w/v) salt concentration. The oil emulsion capacity depended mostly on salt concentration and the type of salt under consideration while oil emulsion stability is better at higher salt concentrations between 5.0-15% (w/v) than lower salt concentrations for the two studied samples. Likewise the least gelation concentration of 12.0% (kersting`s groundnut flour) and 14.0% (bambara groundnut flour) in free salt solutions were improved to between 6.0-10% and 8.0-12.0%, respectively in the presence of the salts used.
  O.S. Adefemi , S.S. Asaolu and O. Olaofe
  The physico-chemical status of water samples from four major dams in Ekiti was assess for a period of three years (dry and wet seasons). Result showed that the physico-chemical parameters determined were higher in the dry season than wet season. The statistical analysis revealed that most of the physico-chemical parameters are significantly different except for temperature, conductivity and dissolved solid whose values are lower than the table value (0.4975 at P = 0.05). The value increased from one year to another. The result obtained fell within the maximum allowable limit set by United State Environmental Protection Agency and World Health Organization.
  S.O. Adefemi , S. S Asaolu and O. Olaofe
  The concentration of heavy metals (zinc, lead, manganese, iron, copper, cobalt, chromium, cadmium and nickel) in water, sediment and different parts of (Tilapia mossambicus) fish were analyzed using atomic absorption spectrophotometer. Cobalt, chromium and nickel were not detected in any of the samples while other metals are more concentrated in the sediment and fish parts than water. The heavy metals concentration determined were below the deleterious level while the water qualities were within the standard limit for drinking water. There were evidence of bioconcentration of the metals in fish parts with factors for zinc, manganese, iron and lead ranging between 20.6- 77.7, 11.0-60.0, ND-126.3 and ND-10.0, respectively.
  S.O. Adefemi , S. S Asaolu and O. Olaofe
  Levels of sodium, potassium, magnesium and calcium were determined in water, sediments and whole fish (Illisha africana) from some selected dams in Ekiti State using atomic absorption spectrophotometer. The levels of these metals in water were found to be lower than those in sediment and fish samples. The values of potassium were found to be the most abundant than other elements in the water (0.16-0.22 mg/100 mL) and sediment (4.38-6.49 mg/100 g) samples; sodium (3.56-5.62 mg/10 g) and potassium (3.06-5.24 mg/100 g) were relatively equal in fish sample. It is quite evident that all element were higher in both sediment and fish samples judging from the biomagnifications factor. Sodium, potassium, magnesium and calcium factor in fish range between 25.43-49.90, 15.30-23.82, 14.14-26.56 and 15.21-43.50, respectively and those of sediments range between 30.14-37.50, 2.45-32.45, 16.35-32.60 and 25.10-50.08, respectively.
 
 
 
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