Besides, he was a postdoctoral fellow at Shantou University Medical College, Shantou, Guangdong, China (2011-2013) and has worked in the area of environmental assessment using different environmental matrices including soil, dust, plants etc., to establish the impact of wastes resulting from anthropogenic activities.
In addition, he has carried out research in the area of pesticide and plant extract toxicity using different bioassays including Allium cepa and mice/rat sperm cell morphological assays. He has explored biochemical, haematological and histopathological parameters to evaluate toxicity of some environmental wastes on different organisms. He worked in collaboration with some foreign experts on the impact of electronic waste recycling on environmental matrices as well as on sensitive human population. Currently, his is focusing on nanotechnology research, exploring different applications and their environmental friendliness.He has over 60 publications to his credit in highly reputable peer review journals.
He had served as Acting Head of Department of Pure and Applied Biology (August 2018 to July 2019) and Head of department (August 2019 to July 2022).
- Fawole , O.O., Adewoye, S.O., Yekeen, T. A. and Kehinde, A. T. (2003). Studies on the Meristic and Morphometric Characteristics of Clarias gariepinus (Burchell: 1822) from Two Freshwater Environments. Science Focus Vol. 3:81-83.
- Yekeen, T. A., Okorie, T. G., and Bakare, A. A. (2004). Evaluation of the acute and sublethal effects of ethanolic extracts of Piper guineense in mice. Asian Journal of Microbiology, Biotechnology and Environmental Science 6(4): 513-519.
- Fawole, O. O., Adewoye, S. O., Yekeen, T. A. and Adeniji, E. A. (2006). Studies on the meristic and morphometric characterization of Sarotherodongalilaeus (Artedi) from two freshwater environments. Research Communications in Fisheries1(2):17-20.
- Lateef, A. and Yekeen, T. A. (2006). Microbial attributes of pharmacaeutical effluent and its genotoxic effects on Allium cepa. International Journal .Environmental .Studies. 63(5): 535-536.
- Yekeen, T. A., Okorie, T. G., and Bakare, A. A. (2007). Acute and chronic toxicity effects of deltamethrin in mice. Asian Journal of Microbiology, Biotechnology and Environmental Science.9(1): 11-17.
- Lateef, A., Yekeen, T. A. and Ufoma, P. (2007). Bacteriology and genotoxicity of some pharmacaeutical wastewater in Nigeria. International Journal of Environmental and Health. 1(4): 551- 562.
- Azeez, M. A., Yekeen, T. A. and Akinboro, A.(2007) Cytotoxic effects of cobalt and copper chloride salt solutions on Allium cepa. Science Focus:An International Journal of Biological and Physical Sciences. 12(2):43-49.
- Fawole, O. O., Yekeen, T. A., Ayandele, A., Akinboro, A., Azeez, M. A. and Adewoye, S. O. (2008). Polluted Alamuyo River: Impacts on the surrounding wells, microbial attributes and toxic effects on Allium cepa root cells. African Journal of Biotechnology.7(4): 450-458.
- Yekeen,T. A. and Fawole, O. O. (2009). Studies on the acute toxicity of the synthetic pyrethroid deltamethrin on juvenile catfish, Clarias gariepinus(Burchel: 1822). Science Focus:AnInternationalJournal of Biological and Physical Sciences14(3): 310 –316.
- Yekeen, T. A. Ilori, T A. and Fawole, O. O. (2009). Toxic effects of endosulfan pesticide on sperm count, motility and morphology of Rattus novegicus. Science Focus:An International Journal of Biological and Physical Sciences.14(4): 536-544.
- Yekeen, T. A. and Fawole, O. O. (2011). Toxic effects of endosulfan on haematological and biochemical indices of Clarias gariepinusAfrican Journal of Biotechnology10(64): 14090-14096
- Yekeen, T. A., Adetiba, O. A., Azeez, M. A., Falodun, M. A., Akintaro, S. I. and Yekeen, T. A. (2011). Studies on the proximate analysis of Solanum aethiopicum, Lactucataraxacifoliaand Talinum triangulare and potential cytotoxic effects of their aqueous extract using Allium cepa assay. Anal of Biological Research 2(5): 696-706.
- Yekeen, T. A,Falodun, M. A., Azeez, M. A., Adetiba, O. A., Ogundiran, M. A, (2011). Nutritional qualities and cytotoxic evaluation of Vernonia amygdalina, Amaranthus caudatum and Telfairia occidentalis vegetables widely consumed in South West Nigeria. Archives of Applied Science Research. 3(6): 383-391.
- Yekeen,T. A.and Onifade, T. O. (2012). Evaluation of some Heavy Metals in Soils along a Major Road in Ogbomoso, South West Nigeria. Journal of Environment and Earth Science. 2 (8): 71-79.
- Qiu, S., Huo, X., Liu, J., Li, B., Yekeen, T. A., Zhang Y. and Xu X. (2012). Association between prenatal lead and cadmium exposure from electronic waste recycling and development of neonate. Journal of Shantou University Medical College. 25(3): 138-140.
- Yang, H., Huo, X., Yekeen, T. A., Zheng, Q., Zheng, M. and Xu, X. (2012). Effects of lead and cadmium exposure from electronic waste on child physical growth. Environmental Science and Pollution Research 20: 4441–4447.
- Zheng, G., Xu, X., Li, B., Wu, K., Yekeen, T. A. and Huo, X. (2013). Association between lung function in school children and exposure to three transition metals from an e-waste recycling area. Journal of Exposure Science and Environmental Epidemiology23: 67 – 72. doi:10.1038/jes.2012.84; published online 1 August 2012
- Yekeen, T. A., Fawole, O. O. and Bakare, A. A. (2013) Evaluation of toxic effects of lambdacyhalothrin on the haematology and selected biochemical parameters of African catfish Clarias gariepinus. Zoology and Ecology (Formaly Acta Zoological Luithania). 23(1): 45-52.
- Yekeen, T. A, Akintaro O. I., Akinboro A. and Azeez M. A. (2013) Evaluation of cytogenotoxic and nutrient composition of three commonly consumed vegetables in south west Nigeria. African Journal of Food Science and Nutritional Development 13 (2): 7452-7466.
- Fawole, O. O., Yekeen, T. A., Adewoye, S. O., Ogundiran, M. A., Ajayi, O. E. and Nwaiya, M. N. (2013). Nutritional qualities and heavy metals analysis of six fish species from Oba reservoir in Ogbomoso, Nigeria.African Journal of food science 7(8): 246-252.
- Xu, X., Yekeen, T. A. Xiao, Q., Wang, Y., Zhang, Y. and Huo, X.(2013) Placental IGF-1 and IGFBP-3 expression correlate with PAH and PBDE levels from prenatal exposure to electronic waste. Environmental Pollution182: 63-69.
- Badmus, J. A,,Odunola, A. O., Yekeen, T. A., Gbadegesin, M. A., Godo, O. M., Oyebanjo, K. S, Hiss, D. C. (2013) Evaluations of antioxidant, antimutagenic and lipid peroxidation inhibitions of some fractions of Holarrhena floribunda (G. Don) leaves. Acta Biochimica Polonica. 60(3): 435–442
- Yekeen, T. A. and Adeboye, M. K. (2013). Cytogenotoxic effects of cypermethrin, deltamethrin, lambdacyhalothrin and endosulfan pesticides on Allium cepa root cells. African Journal of Biotechnology. 12(41): 6000-6006.
- Xu, X., Zhang, Y., Yekeen, T. A., Li, Y., Zhuang, B. Huo. X. (2014). Increase male genital diseases morbidity inked to informal electronic waste recycling in Guiyu, China. Environmental Science and Pollution Research21:3540–3545 DOI 10.1007/s11356-013-2289-2.
- Yekeen, T. A.,Ayandele, A. A., Akinboro, A., Onipede, A. Y. and Alawode, R. (2013). Assessment of toxicity and microbial attributes of synthetic Epoxy Resin and Acetaminophen effluents. Pollution Research. 32 (4) : 9-16.
- Xu, X., Yekeen, T. A., Liu, J., Zhuang, B., Li, W. and Huo, X. (2014) Chromium exposure among children from an electronic waste recyclingtown of China. Environmental Science and Pollution ResearchDOI 10.1007/s11356-013-2345-y.
- Xia Huo, LinPeng, Bo Qiu, Liangkai Zheng, Taofeek A. Yekeen, Xijin Xu. (2014) ALAD genotypes and blood lead levels of neonates and children from e-waste exposure in Guiyu, China. Environmental Science and Pollution Research 21:6744 –6750DOI: 10.1007/s11356-014-2596-2
- Fawole, O. O., Yekeen, T. A.,Ayandele, A. A., Ajayi, T. O., Aina, O. O., Omolaso, O. and Odebunmi, A. (2014) Cassava mill effluent toxicity assessment using two bioassays and bacterial attributes Pollution research 33(2)
- Fawole O O and Yekeen T A. (2014).Alteration inhaemotological and some selected biochemical indices of Claria gariepinus exposed to deltamethrin. Zoology and Ecology. 24 (4): 355 – 360,
- Akinboro, A., Kamaruzaman B. M., Asmawi M. Z. and Yekeen, T. A. (2014). Antimutagenic effects of aqueous fraction of Myristica fragrans (Houtt.) leaves on Salmonella typhimurium and Mus musculus Acta Biochimica Polonica.
- Liu, L Xijin Xu, Taofeek A. Yekeen, Kun Lin, Weiqiu Li, Xia Huo. (2015). Assessment of association between the dopamine D2 receptor (DRD2) polymorphism and neurodevelopment of children exposed to lead. Environmental Science and Pollution Research. 22:1786 – 1793
- Azeez, M.A., Yekeen, T. A., Animasahun, D. A., Durodola, F., Bello, O. B. (2015)Terminalia avicennioides as a potential candidate for pharmaceutical industry: a review. Research Journal of Pharmaceutical, Biological and Chemical Sciences 6(2).
- Lateef, A.,, Azeez, M.A., Asafa, T.B ., Yekeen, T.A., Akinboro, A., Oladipo, I.C., Ajetomobi, F.E., Gueguim-Kana, E.B., and Beukes, L.S (2015) Cola nitida-mediated biogenic synthesis of silver nanoparticles using seed and seed shell extracts and evaluation of antibacterial activities", BioNanoScience. 5 (4):196-205
- Lateef, A., Ojo, S. A., Azeez, M.A., Asafa, T. B., Yekeen, T. A., Akinboro, A., Qladipo, I.C., Gueguim-Kana, E. B., and Beukes, L. (2016) Cobweb as novel biomaterial for the green and eco-friendly synthesis of silver nanoparticles Applied Nanoscience 6(6):863-874
- Lateef, A., Azeez, M. A. Asafa, T. B. Yekeen, T. A.Akinboro, A., Oladipo, I. C. Azeez, L., Ajibade, S. A. Ojo, S. A., Gueguim-kana, E. B. and Beukes, L. S. (2016) Biogenic synthesis of silver nanoparticles using pod extract of Cola nitida: antibacterial, antioxidant activities and application as additive in paint Journal of Taibah University for Science 10(4) 551-562
- Yekeen, T. A., Fawole, O. O., Bakare, A.A andEmipke B.O. (2016). Alteration in haematological, biochemical and reproductive indices of Rattus novegicus treated with lambdacyhalothrin. Zoology and Ecology 26(01): 47 - 56.
- Zheng, X., Xu, X., Yekeen, T. A., Zhang, Y., Chen, A., Kim, S.S., Dietrich, K. N., Ho, S., Lee, S Reponen, T., Huo, X. (2016) Ambient Air Heavy Metals in PM2.5 and Potential Human Health Risk Assessment in an Informal Electronic-Waste Recycling Site of China Aerosol and Air Quality Research. DOI: 10.4209/aaqr.2014.11.0292
- Lateef, A., Azeez, M. A. Asafa, T. B. Yekeen, T. A.Akinboro, A., Oladipo, I. C. Azeez, L., Ojo, S. A., Gueguim-kana, E. B. and Beukes, L. S. (2016). Cocoa pod husk extract-mediated biosynthesis of silver nanoparticles: its antimicrobial, antioxidant and larvicidal activities. J Nanostruct Chem. 6(2):159-169. DOI 10.1007/s40097-016-0191-4
- Ojo, S. A., Lateef, A., Azeez, M. A. Oladejo, S, M,, Akinwale, A. S., Asafa, T. B. Yekeen, T. A.Akinboro, A., Oladipo, I. C. Azeez, L., Gueguim-kana, E. B. and Beukes, L. S. (2016). Biomedical and catalytic application of gold and silver-gold alloy nanoparticles biosynthesized using cell-free extract of Bacillus safensis LAU 13: Antigfungal, dye degradation, anticoagulant and thrombolytic activities. IEEE Transaction on Nanobioscince
- Yekeen, T. A.,Xu, X., Zhang, Y., Wu, Y., Kim, S., Reponen, T., Dietrich, K. N., Ho, S., Chen A., Huo, X.(2016). Assessment of health risk of trace metal pollution in surface soil and road dust from e-waste recycling area in China Environmental Science and Pollution Research
41. Azeez, M. A., Lateef, A., Asafa, T. B., Yekeen, T. A.,Akinboro, A., Oladipo, I. C., Gueguim-Kana, E. B., and Beukes, L. S. (2016). Biomedical Applications of Cocoa Bean Extract-Mediated Silver Nanoparticles as Antimicrobial, Larvicidal and Anticoagulant Agents.J.Clust. Sci.
- Azeez, M. A., Yekeen, T. A., Adedeji, A. O., Bello, O. S. (2016). Proximate and phytochemical constituents of four medicinal plants and their cytogenotoxic effects using Allium cepa assay. Journal of Agroalimentary Processes and Technologies 22(3), 132-141
- Lateef, A., Ojo, S. A., Elegbede, J. A., Azeez, M. A., Yekeen, T. A., Akinboro, A.(2016) Evaluation of Some Biosynthesized Silver Nanoparticles for Biomedical Applications: Hydrogen Peroxide Scavenging, Anticoagulant and Thrombolytic Activities.J Clust. Sci.28(3): 1379-1392.
- Oladipo, I. C., Lateef, A. Elegbede, J. A., Azeez, M. A. Asafa, T. B. Yekeen, T. A. Akinboro, A., Gueguim-Kana, E. B. Beukes, L. S. Oluyide, T. O., Atanda O. R (2017) Enterococcus species for the one-pot biofabrication of gold nanoparticles: characterization and nanobiotechnological applications.Journal of Photochemistry & Photobiology, B: Biology173: 250-257.
- *Oladipo, I. C., Lateef, A. Azeez, M. A. Asafa, T. B. Yekeen, T. A. Akinboro, A., Akinwale, A. S., Gueguim-Kana, E. B. and Beukes, L. S (2017). Green Synthesis and Antimicrobial Activities of Silver Nanoparticles using Cell Free-Extracts of Enterococcus species.Not Sci Biol, 2017, 9(2):196-203.
- Yekeen, T. A., Azeez, M. A., Akinboro, A., Lateef, A., Asafa, T. B., Oladipo, I. C., Oladokun, S. O.,, and Ajibola, A. A. (2017). Safety evaluation of green synthesized Cola nitida pod, seed and seed shell extracts-mediated silver nanoparticles (AgNPs) using Allium cepa assay Journal of Taibah University for Science 11: 895–909
- Yekeen, T. A., Azeez, M. A., Lateef, A., Asafa, T. B., Oladipo, I. C., Badmus, J. A., Adejumo, S. A., and Ajibola, A. A. (2017).Cytogenotoxicity potentials of cocoa pod and bean-mediated green synthesized silvernanoparticles on Allium cepa cells. Caryologia. 70(4): 1-12.
- Elegbede, J. A., Lateef, A., Azeez, M. A., Asafa, T. B., Yekeen, T. A., Oladipo, I. C. Adebayo, E. A., Beukes, L. S., Gueguim-Kana, E. B. (2018) Fungal xylanases-mediated synthesis of silver nanoparticles for catalytic and biomedical applications. IET nanobiotechnology. 12 (6): 857-863
- Elegbede, J. A., A Lateef, A., Azeez, M. A., Asafa, T. B., Yekeen, T. A., Oladipo, I. C., Hakeem, A. S., ., Beukes, L.S., Gueguim-Kana, E. B. (2019). Silver‐gold alloy nanoparticles biofabricated by fungal xylanases exhibited potent biomedical and catalytic activities.Biotechnology progress. Biotechnology Progress 35:e2829
- Elegbede, A Lateef, A., Azeez, M. A., Asafa, T. B., Yekeen, T. A., Oladipo, I. C., Aina, D. A., Beukes, L.S., Gueguim-Kana, E. B. (2018). Biofabrication of Gold Nanoparticles Using Xylanases Through Valorization of Corncob by Aspergillus niger and Trichoderma longibrachiatum: Antimicrobial. Waste and Biomass Valorization 11(3):781-791.
- Akintayo1, G. O., Lateef, A., Azeez1, M. A., Asafa, T. B., Oladipo, I. C., Badmus, J. A. Ojo, S. A., Elegbede, J. A., Gueguim-Kana, E. B., Beukes, L. S. and Yekeen, T. A. (2020). Synthesis, bioactivities and cytogenotoxicity of animal fur-mediated silver nanoparticles. IOP Conference Series.: Materials Science and Engineering805 (2020) 012041.
- Asafa, T. B., Odusote2,J. K., Ibrahim,O. S. Lateef, A., Durowoju1,M. O., Azeez, M. A.,Yekeen, T. A.,Oladipo,I. C., Adebayo, E. A., Badmus, J. A., Sanusi, Y. K.and Adedokun, O. (2020). Inhibition efficiency of silver nanoparticles solution on corrosion of mild steel, stainless steel and aluminum in 1.0 M HCl mediumTo cite this article: T IOP Conf. Ser.: Mater. Sci. Eng. 805 012018.
- Azeez, M. A., Durodola, F. A., Lateef, A., Yekeen, T. A.,Adubi, A. O., Oladipo, I. C.,
Adebayo, E. A., Badmus, J. A., and Abawulem, A. O. (2020).Green synthesized novel silver nanoparticles and their application as anticoagulant and thrombolytic agents:A perspective.IOP Conf. Series: Materials Science and Engineering.805 (2020) 012043. - Oladipo, I. C., Lateef, A., Azeez, M. A., Asafa, T. B.,Yekeen, T. A.,Ogunsona, S. B., Irshad, H. M. and Abbas, S. H. (2020). Characterization and biomedical application of phytosynthesized gold nanoparticles from Datura stramonium seed extract. IOP Conf. Series: Materials Science and Engineering 805 (2020) 012021.
- Oladipo, I. C., Lateef, A., Azeez, M. A., Asafa, T. B.,Yekeen, T. A.,Ogunsona, S. B., Irshad, H. M. and Abbas, S. H. (2020). Antidiabetic properties of phytosynthesized gold nanoparticles (AuNPs) from Datura stramonium seed.IOP Conf. Series: Materials Science and Engineering 805 (2020) 012035.
- Okaseun, O. T., Fawole, O. O.,Yekeen, T. A., and Ajala, O.,O. (2020) Benthic macroinvertebrates as bioindicators of water pollution in Oba River, Ogbomoso, Nigeria. Science Focus 25: 146 – 165
- Badmus, J. A., Oyemomi, S. A., Adedosu, O. T. Yekeen, T.A., Azeez, M. A., Adebayo, E. A., Lateef, A., Badeggi, U. M., Botha, S., Hussein, A. A., Marnewick, J. L. (2020).Photo-assisted bio-fabrication of silver nanoparticles using Annona muricata leaf extract: exploring the antioxidant, anti-diabetic, antimicrobial, and cytotoxic activities. Heliyon 8(11) e05413
- Asafa, T. B., Odediji, R. A., Salaudeen, T. O., Lateef, A., Durowoju, M. O., Azeez, M. A., Yekeen, T. A., Oladipo, I. C., Irshad, H. M., Abbas, S. H. (2021) Physico-mechanical properties of emulsion paint embedded with silver nanoparticles Bulletin of Materials Science: 44: 1 (1-11)
- Oladipo, I. C., Lateef, A., Azeez, M. A., Asafa, T.B., Yekeen, T. A. Ogunsona, S. B. Irshad, M. and Hakeem, A. S. (2021). Antifungal, Anticoagulant, Thrombolytic and Antioxidant Activities of Gold Nano Particles Phytosynthesized from Blighia Sapida Husk Extract .Science and Technology of Nanomaterials:.2(1),
- Omosanya, T. A., Yekeen,T. A., Fawole, O. O., Azeez, M. A. Lateef, A. Ajala, O. O. (2021). Applications and Benefits of Dietary Nanoparticles in Aquaculture: A ReviewScience and Technology of Nanomaterials. 2(1): 13 (Oct, 2021).
- Akintayo, G. O., Yekeen, T. A., Azeez, M. A., Lateef, A. Oladipo, I.C., Asafa, T. B. Badmus, J.A., Ojo, S.A., Abodunrin, A. E. Gueguim-Kan, E. B., and Beukes, L. S. (2021). Biological Activities and Cytogenotoxicity Evaluation of Green Synthesized Corn Silk-Mediated Silver Nanoparticle. Science and Technology of Nanomaterials 2(1): 10 (Oct, 2021)
- Badmus, JA., Oyemomi, SA., Fatoki, JO., Yekeen, TA.,Adedosu, OT (2022)Anti-haemolytic and cytogenotoxic potential of aqueous leaf extract of Annona muricata (L.) and its bio-fabricated silver nanoparticles. Caryologia75 (1), 3-13
- Kehinde, D. B., Ibikunle, JB., Adebayo, E. A., Oke, A.M. Badmus, J. A., Yekeen, T.A.(2022). Anti-Diabetic Potential of Silver (AgNPs) and Gold (AuNPs) Nanoparticles Synthesized Using an Aqueous Extract of Opuntia ficus indica Cladodes in Wistar RatsJournal Tropical Journal of Natural Product Research 6 (7)152-1158