Browsing by Author "Saliu, Kudirat Bolanle"

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    Analysis of Indoor Air Microflora of Some Daycare Centres in Ilorin South Local Government Area, Nigeria
    (Al-Hikmah Journal of Pure and Applied Sciences, 2017) Sule, Ismaila Olawale; Agbabiaka, Toyin Olayemi; Saliu, Kudirat Bolanle; Odebisi-Omokanye, Mutiat Busayo; Zakariyah, Rahmat Folashade; Ali, Aminat A
    The microflora of air in ten daycare centres within Ilorin South Local Government Area of Kwara State, Nigeria was investigated by settling plate technique. The plates were exposed for a period of 10 minutes at each sampling point. The counts of bacteria, total coliform and fungi ranged from 10 to 200, 10 to 170 and 6 to 110 cfu/10 minutes respectively. A total of 23 microorganisms comprising 12 bacteria and 11 fungi were isolated in this study. These bacteria were Micrococcus sp., Staphylococcus arlettae, Corynebacterium pseudotuberculosis, Staphylococcus haemolyticus, Corynebacterium kutscheri, Staphylococcus warneri, Staphylococcus aureus, Corynebacterium diphtheriae., Corynebacterium amycolatum, Bacillus pumilus, Corynebacterium matruchotii and Listeria grayi while the fungi were Aspergillus fumigatus, Aspergillus niger, Penicillium chrysogenum, Penicillium sp., Aspergillus flavus, Rhizopus stolonifer, Fusarium oxysporum, Saccharomyces cerevisiae, Alternaria alternata, Aspergillus glaucus and Polyporus sp. The predominant bacterium and fungus in this study were Micrococcus sp. and Aspergillus fumigatus respectively. It can be concluded that the indoor air of the daycare centres used for this study had diverse species of Gram positive bacteria, high occurrence of non-pathogenic bacteria and fungi. Moulds dominate the fungal isolates and some of the bacterial species are commensals found on human body whereas the fungi are environmental in origin. A few pathogenic species were isolated among the bacteria and fungi.
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    Efficacy of Some Chemical Preservatives in Prolonging the Shelf Life of Fermented Locust Beans ‘iru’
    (UMYU Journal of Microbiology Research, 2019) Saliu, Kudirat Bolanle; Sule, Ismaila Olawale; Agbabiaka, Toyin Olayemi; Zakariyah, Rahmat Folashade
    In Nigeria most foods are preserved by adding salt. The efficacy of this and some other chemical preservatives in improving the storage quality of fermented locust beans was the focus of this study. Samples of fermented locust beans were separately treated with table salt (10% w/w), brine (10 and 20% solution), vinegar (4 and 6%) and lactic acid (10 and 20%). After treatment, all the samples were stored at ambient temperature and periodically analysed for sensory and microbiological properties. Samples treated with dry salt became slippery, changed in color and developed bad odor within 1, 4 and 14 days respectively. Except for the softening observed, no significant (p < 0.5) change occurred with the color and odor of the other samples during storage. A total of 29 bacterial and 6 fungal isolates were obtained. The dominant bacteria were members of the genera Bacillus, Staphylococcus, Pseudomonas, Micrococcus, Citrobacter, Microbacterium, Enterobacter, Leuconostoc, Arthrobacter, and Corynebacterium while Saccharomyces cerevisae, Aspergillus niger and other Aspergillus spp., dominated the fungal population. Other fungi were Rhizopus stolonifer, Alternaria alternata, and Candida albicans. The microbial load and diversity reduced significantly (p < 0.5) after treatment and during storage. Among the bacterial isolates, Bacillus cereus, B. pumilus, B. lentus, B. licheniformis, Staphylococcus epidermidis, S. saprophyticus Citrobacter freundii, Arthrobacter ureafaciens, Corynebacterium poinsetiae, Micrococcus denitrificans and Microbacterium sp. were inhibited by lactic acid, vinegar and brine with diameter zone of inhibition ranging from 11.0 to 24.0mm; 15.0 to 20.5mm and 12.5 to 22.5 mm respectively. This study has shown that lactic acid, vinegar and brine have some preservative effects on fermented locust beans and can therefore be used to prolong its shelf life.
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    MICROBIOLOGICAL QUALITY ASSESSMENT OF ‘’KUNU” SOLD WITHIN ILORIN METROPOLIS, NIGERIA
    (Biological and Environmental Sciences Journal for the Tropics, 2016-12) Sule, Ismaila Olawale; Saliu, Kudirat Bolanle; Zakariyah, Rahmat Folashade; Adegbenro, I.O