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Articles by A. Olonisakin
Total Records ( 2 ) for A. Olonisakin
  A. Olonisakin , M.O. Oladimeji and L. Lajide
  The toxicity and repellent effects of steam distilled oils of Ocimum suave, Piper guineese, Syzgium aromaticum and Xylopia aethiopica were evaluated against the cowpea bruchid (Callosobrochus maculatus) infesting stored cowpea seeds under prevailing storage conditions in middle belt of Nigeria. In toxicity test C. maculatus adults were exposed to 10 g of cowpea seeds (Vigna unguiculate) admixed with five dosages of each oil. While in the repellency tests adult bruchids were introduced onto test arenas (filter paper discs) treated with different dosages of each of the oil. Insecticidal oil were ranked in the order of decreasing toxicity as Syzgium aromaticum oil (LC50 = < 0.1 mg/10 g seed) > Xylopia aethopica oil (LC50 = 0.485 mg/10 g seed > Piper guineese oil (LC50 = 0.510 mg/100 g seed) > Ocimum shave oil (LC50 0.660 mg/10 g seed). Significantly higher proportion of C. maculates adults were repelled from filter paper discs treated with all plant oils with average means repellent order of 60.24, 77.87, 80.23 and 86.66% for Xylopia aethiopica, Piper guineese, Syzguim aromaticum and Ocimum suare, respectively.
  M.O. Aremu , I. Ogunlade and A. Olonisakin
  Fatty acids; proximate and amino acid composition of Anarcadium occidentale protein concentrate were investigated. The three most abundant fatty acids were C18:1ω 9 > C16:0 > C18:3 ω 3. Unsaturated fatty aids predominated in the sample with adequate amounts of essential fatty acids. Proximate analysis of protein concentrate revealed high percentage crude protein of 69.6g/100g protein. Ash and crude fibre were low while ether extract was not detected. The protein concentrate had a balanced content of some of the essential amino acids, with respect to the FAO/WHO provisional pattern however supplementation may be required in valine and threonine. The calculated isoelectric point (pI) was 4.25 while the first limiting amino acid was valine.
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