Browsing by Author "Ameen, O.M"

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    Bioactive Metabolites in improved cowpea seeds
    (2005-06) Ameen, O.M; Fatope, O.M.; Usman, L.A; Adebayo, S.A
    The International Institute of Tropical Agriculture (IITA) has developed some pest and disease resistant cowpeas. From these, the seeds of 8 cowpea cultivars were extracted with ethanol, and partitioned into chloroform and water-soluble fractions, the water-soluble fraction was further extracted with ethyl acetate. Residues from ethanol, chloroform and ethyl acetate soluble fractions for each of the 8 cowpea cultivars were screened against brine shrimp larvae. The see extracts of cowpea cultivars IT93K-596-9-12, IT90K-277-2 and IT93K – 452 – 1 were found to be most active, indicating that they contain cytotoxic compound(s).
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    Chemical Composition of Leaf Essential Oil of Annona senegalensis Pers. (Annonaceae) growing in North Central Nigeria
    (2010) Ameen, O.M; Usman, L.A; Oganija, F.S.; Hamid, A.A.; Muhammed, N.O; Zubair, M.F.; Adebayo, S.A
    Leaf essential oil of Annona senegalensis Pers. obtained by hydrodistillation was analysed using GC and GC/MS. The analyses revealed the abundance of oxygenated monoterpenes (65.0%). The major constituents were citronellal (30.0%), citronellol (14.8%), geranial (17.2%), thymol (8.1%), β-caryophyllene (7.8%) and carvacrol (6.92).