1. Olayinka, O.O., O.O. Akande, K. Bamgbose and M.T. Adetunji, 2017. Physicochemical characteristics and heavy metal levels in soil samples obtained from selected anthropogenic sites in Abeokuta, Nigeria. J. Applied Sci. Environ. Manage., 21: 883-891.
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2. Adedeji, O.H., O.O. Olayinka and O. Oladimeji, 2017. Physicochemical and microbiological examination of hand-dug wells, boreholes and public water sources in selected areas of Ibadan, Nigeria. J. Applied Sci. Environ. Manage., 21: 576-584.
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3. Olasumbo, O.O., A.O. Hakeem, O.O. Juwon and A.T.O. Francisca, 2016. Environmental and health impact of cement factory production in Ibese, Ogun State, Nigeria. Applied Environ. Res., 38: 93-110.
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4. Bassey, D.E., R.C. Okoro and B.E. Okon, 2016. Modelling of a radio wave transmission of building located around Niger Delta Urban Microcell using-Ray tracing techniquesll. Int. J. Sci., Res., (IJSR), Ijsr. net, 5: 337-346.
5. Adedeji, O.H., O.O. Olayinka and O.O. Tope-Ajayi, 2016. Mapping of traffic-related air pollution using GIS techniques in Ijebu-Ode, Nigeria. Indonesian J. Geogr., 48: 76-86.
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6. Olayinka, O.O., O.H. Adedeji and Y. Balogun, 2015. Air and heavy metal pollution around a steel foundry in Ogijo, Ogun State, Nigeria. J. Sci. Res., 14: 9-16.
7. Olayinka, O.O., O.H. Adedeji and R.A. Ipeaiyeda, 2015. Determination of Polycyclic Aromatic Hydrocarbons (PAHs) on selected dumpsites in Abeokuta metropolis, SW, Nigeria. Applied Environ. Res., 3: 33-48.
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8. Olayinka, O.O., O.H. Adedeji and F.O. Ajibola, 2015. Monitoring gaseous and particulate air pollutants near major highways in Abeokuta, Nigeria. J. Applied Sci. Environ. Manage., 19: 751-758.
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9. Olayinka, O.O., K.O. Adebowale and B.I. Olu-Owolabi, 2015. Effect of chemical modifications on thermal, rheological and morphological properties of yellow sorghum starch. J. Food Sci. Technol., 52: 8364-8370.
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10. Adedeji, O.H. and O.O. Olayinka, 2015. Assessment of groundwater contamination by textile effluent discharges in Ikorodu, Nigeria. Applied Environ. Res., 37: 35-48.
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11. Olufunmilayo, O.O., A.H. Oludare and D. Oluwatoyin, 2014. Determination of concentrations of heavy metals in municipal dumpsite soil and plants at Oke-ogi, Iree, Nigeria. Int. Res. J. Pure Applied Chem., 4: 656-669.
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12. Olu-Owolabi, B.I., O.O. Olayinka, A.A. Adegbemil and K.O. Adebowale, 2014. Comparison of functional properties between native and chemically modified starches from acha (Digitaria stapf) Grain. Food Nutr. Sci., 5: 222-230.
13. Olayinka, O.O. and O.H. Adedeji, 2014. Concentration of heavy metals in the soils near some mechanic villages in Abeokuta metropolis, Ogun State, Nigeria. J. Adv. Chem., 8: 1667-1679.
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14. Olayinka, O.O. O.H. Adedeji and S.S. Sanni, 2014. Water quality of hand-dug wells at close proximity to pit latrine and its health implication in Isara–Remo. J. Environ. Sci. Toxicol. Food Technol., 8: 56-64.
15. Adedeji, O.H., O.O. Olayinka and F.C. Nwanya, 2014. Soil and water pollution levels in and around urban scrapyards. IOSR J. Environ. Sci. Toxicol. Food Technol., 8: 1-8.
16. Adedeji, O.H. and O.O. Olayinka, 2014. Micro-pollutants in urban residential roof runoff: environmental and health implications. J. Environ. Sci. Toxicol. Food Technol., 8: 55-63.
17. Adedeji, O.H. and O.O. Olayinka, 2014. Concentrations of heavy metals in dumpsite leachate and effects on adjacent stream on Ajakanga, Ibadan, Nigeria. J. Applied Sci. Environ. Sanitation, 9: 113-122.
18. Olayinka, O.O., O.H. Adedeji and I.B. Oladeru, 2013. Water quality and bacteriological assessment of slaughterhouse effluent on urban river in Nigeria. J. Applied Sci. Environ. Sanitation, 8: 277-286.
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19. Olayinka, O.O., K.O. Adebowale and B.I. Olu-Owolabi, 2013. Physicochemical properties, morphological and X-Ray pattern of chemically modified white starch. (Bicolor-moench). J. Food Sci. Technol., 50: 70-77.
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20. Adedeji, O.H., O.O. Olayinka and F.F. Oyebanji, 2013. Assessment of traffic related heavy metals pollution of roadside soils in emerging urban centres in Ijebu-North area of Ogun State, Nigeria. J. Applied Sci. Environ. Manage., 17: 509-514.
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21. Adedeji, O.H. and O.O. Olayinka, 2013. Heavy metal concentrations in urban stormwater runoff and receiving stream. J. Environ. Earth Sci., 3: 141-150.
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22. Olayinka, O.O., A.M. Kareem, I.B. Ariyo, S.K. Omotugba and A.O. Oyebanji, 2012. Antioxidant contents (vitamin C) of raw and blanched different fresh vegetable samples. Food Nutr. Sci., 3: 18-21.
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23. Ashifat, A.A., S.K. Omotubga, A.S. Kehinde, O.O. Olayinka and G.O. Edugbola, 2012. Proximate evaluation of nutritional value of mango (Mangifera indica). Int. J. Res. Chem. Environ., 2: 244-245.
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24. Olayinka, O.O., I.B. Ariyo, T.R. Fasola and J.A. Oyeniran, 2011. Phytochemical constituents, anti-microbial activity and elemental analysis of Zanthoxylum zanthoxyloides (lam.) Watern. J. For. Res. Manage., 8: 80-91.
25. Olayinka, O.O., B.I. Olu-Owolabi and K.O. Adebowale, 2011. Effect of succinylation on the physicochemical, rheological, thermal and retrogradation properties of red and white sorghum starches. Food Hydrocol., 25: 515-520.
26. Olayinka, O.O. and A.R. Ipeaiyeda, 2011. Chromium and lead concentrations in tomatoes (Solanum lycopersicum) and red pepper (Capsicum frutescens) cultivated in roadside farmland around high traffic density area of Ibadan, Nigeria. Soil Sediment, Contami., 20: 1-11.
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27. Olayinka, O.O., B.B. Adeleke., O.A. Ajayi and A.J. Onifade, 2007. Proximate analysis and physicochemical properties of cola millenii seed oil. Int. J. Chem., 17: 73-75.
28. Olayinka O.O., K.O. Adebowale and B.I. Olu-Owolabi, 2007. Effect of heat-moisture treatment on physicochemical properties of white sorghum starch. Food Hydrocoll., 22: 225-230.
29. Olayinka, O.O. and E.A. Adebayo, 2006. Extraction and analysis of the oil obtained from anacardium occidentale (Cashew nut). Int. J. Chem., 16: 241-244.