Professor Simeon Olatayo Jekayinfa was born on August 21, 1966. He obtained a Bachelor of Engineering degree from University of Ilorin in 1988, and MSc and PhD Degrees in Agricultural Engineering from University of Ibadan in 1995 and 2004, respectively. He had his postdoctoral training at the Leibniz Institute of Agricultural Engineering, Potsdam, Germany between 2006 and 2008. He joined the services of Ladoke Akintola University of Technology (LAUTECH), Ogbomoso in August 1999 and became a full Professor of Farm Power and Machinery on October 1, 2010. He has been a recipient of many awards including the World Academy of Science Research Grants, German Academic Exchange Service Fellowships, Alexander von Humboldt Foundation Fellowships and TETFUND grants. His research areas are energy in agriculture and renewable energy. His research has led to the development of biofuels and the optimization of energy consumption in agricultural practices.
Professor Jekayinfa was head of the Department of Agricultural Engineering at LAUTECH (2004-2006;2008-2011), Director of Academic Planning (2012-2015) and Dean, Faculty of Engineering and Technology (2019-2023). He also served as the Dean of the Faculty of Engineering at Adeleke University (2017-2019). He has served as an external examiner and assessor to more than 20 universities within and outside Nigeria. He has successfully supervised 12 PhD candidates. He has authored over 100 articles which have been cited more than 2070 times with an h-index of 23. He is the Editor-in-Chief of LAUTECH Journal of Engineering and Technology and Adeleke University Journal of Engineering and Technology.
Professor Jekayinfa is a COREN registered Engineer and a Fellow of the Nigerian Society of Engineers, Nigerian Institution of Agricultural Engineers and African Scientific Institute. He is also a member of American Society of Agricultural and Biological Engineers and International Association of Engineers.
1. Waheed, M.A., Jekayinfa, S.O. and Olafimihan, E.O. (2003). Strength of Materials for Beginners. ISBN 978-006-391-9. EMOLA-JAY COMMUNICATIONS (INC) Ibadan, Nigeria.
2. Waheed, M.A., Jekayinfa, S.O. and Adebiyi, K.A. (2003). Introductory Fluid Mechanics. ISBN 978-006-506-7. EMOLA-JAY COMMUNICATIONS (INC) Ibadan, Nigeria.
3. Taiwo, A. Jekayinfa, S.O. and Onawumi, A.S. (2003). Mechanical Maintenance and Repairs. ISBN 978-2902-05-5
4. Ojediran, J.O. and Jekayinfa, S.O. (2004). Principles of Agricultural Engineering. ISBN 978-006-503-2. EMOLA-JAY COMMUNICATIONS (INC) Ibadan, Nigeria.
5. Jekayinfa, S.O. (ed.) (2012) Building a Non-Oil based Economy for Nigeria: The Potential of Value-Added Products from Agricultural Residues. Cuvillier Verlag Göttingen, Germany Pp. 491 https://cuvillier.de/de/shop/publications/6077 ISBN (e-Book): 9783736939370 ISBN (Hard Copy): 9783869559377
6. Jekayinfa, S.O. (ed.) (2013). Potential Application of Nanotechnology in Developing countries of West Africa: Trend of Research Activities. Pp 245. ISBN 978-978-50602-3-2
7. Jekayinfa, S.O. (ed.) (2017) Harvest of Research Outcomes to Confirm Achievement of the Millennium Development Goals. Cuvillier Verlag Göttingen, Germany Pp. 424 ISBN (e-Book): 9783736986169 ISBN (Hard Copy): 9783736996168
8. Jekayinfa, S.O. (2018). No Free Lunch: Implications of the Farm as a Thermodynamic System. An Inaugural Lecture. LAUTECH Press, Nigeria. Pp. 100
Contribution to Books
1. Jekayinfa, S.O. and Waheed, M.A. (2008). Selected Fuel Properties of Biodiesel Produced from Shea Butter Oil and Palm-Kernel Oil. In: ed. Adebooye, O.C. et al.: Food, Health and Environmental Issues in Developing Countries: The Nigerian Situation. Cuvillier Verlag Göttingen, Germany. Pp. 491. (Germany) https://cuvillier.de/de/shop/publications/1261
2. Ola, F.A. and Jekayinfa, S.O. (2010). Thermo-Chemical Conversion of Mixed Crop Residues and Crude Glycerol to Produce Bio-Oil. In: ed. Adeboye, O.C. et al.: Biotechnology development and Threat of Climate Change in Africa: The Case of Nigeria. Cuvillier Verlag Göttingen, Germany. Vol I. Pp. 311. (Germany)https://cuvillier.de/de/shop/publications/699
3. Adebayo, A. O. and Jekayinfa, S.O. (2011) Production of Biogas from Selected Crops and Animal Residues in Nigeria. In: ed. Jekayinfa, S.O. Building a Non Oil based Economy for Nigeria: The Potential of Value-Added Products from Agricultural Residues. Cuvillier Verlag Göttingen, Germany Pp. 441. (Germany) https://cuvillier.de/de/shop/publications/6077
4. Waheed, M.A., Jekayinfa, S.O., and Ladokun, L.L. (2011). A Study of the Effects of Some Local Weather Parameters on the Thermal Performance of a Solar Concentrating Collector. In: ed. Jekayinfa, S.O. Building a Non Oil based Economy for Nigeria: The Potential of Value-Added Products from Agricultural Residues. Cuvillier Verlag Göttingen, Germany. Pp. 491. (Germany) https://cuvillier.de/de/shop/publications/6077
5. Jekayinfa, S.O. (2012) Review of Literature and Theoretical (and Conceptual) Framework Construction. A paper presented at a two-day workshop on “Research Procedures in LAUTECH Postgraduate Studies (Nigeria)
6. Jekayinfa, S.O. (2013). Cashew Technology In ed.: Hans H. Bass. Promoting the Production of Cashew, Shea, and Indigenous Fruits in West Africa Project Report. Supplement 2 to the ITD Annual Report 2013. Bremen University of Applied Sciences, Institute for Transport and Development, Germany. (Germany) https://nbn-resolving.org/urn:nbn:de:0168-ssoar-338461
7. Jekayinfa, S.O. (2013). The Nature of Abstract Writing in Postgraduate Research Reporting. In ed.: Ebijuwa and Adetutu “Research Procedures in LAUTECH Postgraduate Studies. (Nigeria)
8. Jekayinfa, S.O. (2017). Writing Research Proposal and Sourcing Funds for Research Projects. In ed.: Olabiyi “Scientific Writing Methods and CIRCLE RDF Usage Workshop” (Nigeria)
9. Onifade, T. B., Wandiga, S. O., Bello I. A., Jekayinfa, S. O. and Harvey J. P. (2019). Impact of Renewable Technology on Lignocellulosic Material of Palm Fruit Fibre: Strategy for Climate Change and Adaptation. In: Leal Filho W., Leal-Arcas R. (eds) University Initiatives in Climate Change Mitigation and Adaptation. Springer, (Cham) https://doi.org/10.1007/978-3-319-89590-1
Published Journal Articles
1. Ogunlade, C.A., Jekayinfa, S.O., Oyedele, O.J., Olajire, A.S. and Oladipo, A.O. (2023). Drying parameters of wild lettuce (Lactuca taraxaxifolia L) affected by different drying methods. Croatian Journal of Food Science and Technology 15(1): 1-8 https://doi.org/10.17508/CJFST.2023.15.1.13
2. Oloyede, C.T. Jekayinfa, S.O.; Alade, A.O.; Ogunkunle, O.; Laseinde, O.T.; Adebayo, A.O.; Abdulkareem, A.I.; Smaisim, G.F.; Fattah, I.M.R. (2023). Synthesis of Biobased Composite Heterogeneous Catalyst for Biodiesel Production Using Simplex Lattice Design Mixture: Optimization Process by Taguchi Method. Energies, 16, 2197. https://doi.org/10.3390/en16052197.
3. Orisaleye, J.I., Jekayinfa, S.O., Dittrich, C., Obi, O.F. and Pecenka, R. (2023). Effects of Feeding Speed and Temperature on Properties of Briquettes from Poplar Wood using a Hydraulic Briquetting Press. Resources 2023, 12, 12. https://doi.org/10.3390/resources12010012
4. Ogunlade, C.A., Jekayinfa, S. O. and Olaniyi, B. A. (2022). Some fuel properties of biodiesel produced from Vitellaria paradoxa and Elaeis guineensis oil. Agricultural Engineering International: CIGR Journal, 24(4): 90-100
5. Oloyede, C.T., Jekayinfa, S.O., Alade, A.O., Ogunkunle, O., Laseinde, O.T. and Otung, A.U. (2022). Exploration of Agricultural Residue Ash as a Solid Green Heterogeneous Base Catalyst for Biodiesel Production. Engineering Reports https://doi.org/10.1002/eng2.12585
6. Oloyede, C.T., Jekayinfa, S.O., Alade, A.O., Ogunkunle, O., Laseinde, O.T., Adebayo, A.O., Veza, I. and Fattah, I.R. (2022). Potential Heterogeneous Catalysts from Three Biogenic Residues toward Sustainable Biodiesel Production: Synthesis and Characterization. ChemistrySelect. 7(48):1-17.https://doi.org/10.1002/slct.202203816
7. Adeleke, K.M., Jekayinfa, S.O., Idris, M.O. and Adeboye, B.S. (2022). Exergetic Analysis of Groundnut Production System: A Case Study of Kaduna State, Nigeria. Fuoye Journal of Innovation Science and Technology. 2(1): 150-157
8. Orisaleye, J.I., Abiodun, Y.O., Ogundare, A.A., Adefuye, O.A., Ojolo, S.J. and Jekayinfa, S.O. (2022). Effects of Manufacturing Parameters on the Properties of Binderless Boards Produced from Corncobs. Transactions of the Indian National Academy of Engineering. https://doi.org/10.1007/s41403-022-00366-8
9. Jekayinfa, S.O., Adeleke, K.M., Ogunlade, C.A., Sasanya, B.F. and Azeez, N.A. (2022). Energy and exergy analysis of Soybean production and processing system. Cleaner Engineering and Technology. https://doi.org/10.1016/j.clet.2022.100540
10. Orisaleye, J.I., Jekayinfa, S.O., Pecenka, R., Ogundare, A.A.;Akinseloyin, M.O.; Fadipe, O.L. (2022) Investigation of the Effects of Torrefaction Temperature and Residence Time on the Fuel Quality of Corncobs in a Fixed-Bed Reactor. Energies 2022, 15, 5284. https://doi.org/10.3390/en15145284
11. Orisaleye, J.I., Jekayinfa, S.O., Braimoh, O.M. and Edhere, V.O. (2022). Predictive Models for Physical Properties of Abura (Mitrogyna ciliata) Sawdust Briquettes using Response Surface Methodology. Cleaner Engineering and Technology https://doi.org/10.1016/j.clet.2022.100447
12. Ogunsola, A.D., Durowoju, M.O., Alade, A.O., Jekayinfa, S.O., Ogunkunle, O. (2022). Modeling and Optimization of Two-Step Shea Butter Biodiesel Synthesis Using Snail Shell as a Heterogenous Base Catalyst. Energy Advances https://doi.org/10.1039/d1ya00042j
13. Orisaleye,J.I., Jekayinfa, S.O., Ogundare, A.A., Adefuye, A.O. and Bamido, E. (2022) Effect of Screen Size on Particle Size Distribution and Performance of a Small-Scale Design for a Combined Chopping and Milling Machine. Cleaner Engineering and Technology 7(2020): 1-10 https://doi.org/10.1016/j.clet.2022.100426
14. Olatunji, K.O., Madyira, D.M., Ahmed, N.A., Jekayinfa, S.O. and Ogunkunle, O.(2022). Modelling the Effects of Particle Size Pretreatment Method on Biogas Yield of Groundnut Shells. Waste Management & Research. 40 (8): 1176-1188 https://doi.org/10.1177/0734242X211073852
15. Sulaiman, M. A., Jekayinfa, S. O., Samuel, O. D., Adetifa, B. O. and Babalola, A. A. (2021). Waste to energy – Prospect in Ogun State. FUTO Journal Series (FUTOJNLS). 7(1): 120 - 130
16. Adebayo, A.O., Jekayinfa, S.O., Agbede, O.O., Oloyede, C.T., Kolade, A.I. and Ademola, H. (2020). Biogas Production Potential of Moringa (oleifera L.) Residues at Mesophilic Temperature. American Journal of Engineering Research (AJER) 9(12): 87-92
17. Balogun, A, Jekayinfa, S. O., Olajide, J.O., Ola, F.A. and Ogunlade, C. A. (2020). Development and Evaluation of a Combined Castor Seeds Roaster-Oil Expeller. Journal of Innovative Systems Design and Engineering. 11(1): 47-58 https://doi.org/10.7176/ISDE/11-1-07
18. Jekayinfa, S.O., Adebayo, A.O., Oniya, O.O. and. Olatunji, K.O. (2020) Comparative analysis of biogas and methane yields from different sizes of groundnut shell in a batch reactor at mesophilic temperature. Journal of Energy Research and Reviews 5 (1): 34–44 https://doi.org/10.9734/jenrr/2020/v5i130140
19. Jekayinfa, S.O., Orisaleye, J.I. and Pecenka, R (2020). An Assessment of Potential Resources for Biomass Energy in Nigeria. Resources 9(8): 92 – 123.https://doi.org/10.3390/resources9080092
20. Ogunlade, C. A., Jekayinfa, S. O., Olaniran, J. A. and Adebayo, A. O. (2020). Energy life-cycle assessment and economic analysis of sweet orange production in Nigeria. AgricEngInt: CIGR Journal 22(2): 123-132
21. Pecenka, R.., Lenz, H., Jekayinfa, S.O. and Hoffmann, T. (2020). Influence of Tree Species, Harvesting Method and Storage on Energy Demand and Wood Chip Quality When Chipping Poplar, Willow and Black Locust. Agriculture 10, 116 https://doi.org/10.3390/agriculture10040116
22. Sanusi, B.A., Jekayinfa, S.O., Akande, F.B. and Ola, F.A. (2020). Determination of Energy Balance and Economic Analysis of Cucumber (Cucumis Sativus) Production in Tillage Methods. Journal of Energy Technologies and Policy. 10(1): 81-55. https://doi.org/10.7176/JETP/10-1-08
23. Jekayinfa, S.O., Pecenka, R. and Orisaleye, J.I. (2019) ‘Empirical model for prediction of density and water resistance of corn cob briquettes’, International Journal of Renewable Energy Technology, 10 (3): 212–228.https://doi.org/10.1504/IJRET.2019.101730
24. Ola, F.A., Jekayinfa, S.O., Akande, F.B. and Sanusi, B.A. (2019). Energy Use Efficiency of Melon (Colocynthis Citrullus) Production under Different Tillage Methods. Journal of Energy Technologies and Policy. 9(9): 50-55
25. Fadara, T., Adeleke, K.M., Ogunlade, C.A., Jekayinfa, S.O. and Makinde, O.O. (2019). Energy Analysis in Production and Processing of Selected Crops in Nigeria. Adeleke University Journal of Engineering and Technology. 2(2): 203-208
26. Jekayinfa, S.O., Adebayo, A.O., Sulaiman, M.A. and Ayoola, V.O. (2019). Prediction of density and viscosity of biodiesel fuel from Fatty Acid Methyl Ester (FAME) composition Arid Zone Journal of Engineering, Technology and Environment 15 (3), 519-533
27. Orisaleye, J.I., Jekayinfa, S.O., Pecenka R. and Onifade, T.B. (2019). Effect of densification variables on water resistance of corn cob briquettes. Agronomy Research 17(4): 1722–1734. https://doi.org/10.15159/AR.19.171
28. Towoju, O.A. and Jekayinfa, S.O. (2019). Compression Ignition Engine Performance as a Function of the Fuel Properties. Journal of Engineering Sciences 6(1): 1-6. https://doi.org/10.21272/jes.2019.6(1).g1
29. Adebayo, A.O., Jekayinfa, S.O., Ahmed, N. A. and Ogunkunle, O. (2019). Effect of Organic Loading Rate on Biogas Yields of Pig Slurry in a Continuously Stirred Tank Reactor at Mesophilic Temperature. Procedia Manufacturing 35: 337-342 https://doi.org/10.1016/j.promfg.2019.05.049
30. Jekayinfa S. O., Olorunmaiye J. A., Ogunsola A. D., Soji-Adekunle A. R. and Ilori Olutosin O. (2018). Evaluation of Petrol and Ethanol Mixture as a Fuel for Gasoline Engines. Adeleke University Journal of Engineering and Technology. 1(1): 42-50
31. Adebayo, A.O. and Jekayinfa, S.O. (2018). Comparative Study on Biogas Yields of Plug Flow and Batch Reactors fed with Rice Straw at Mesophilic Temperature. Journal of Energy Technologies and Policy 8(4): 32-39
32. Orisaleye, J.I., Jekayinfa, S.O., Adebayo, A.O., Ahmed, N.A. and Pecenka, R. (2018): Effect of densification variables on density of corn cob briquettes produced using a uniaxial compaction biomass briquetting press, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, https://doi.org/10.1080/15567036.2018.1516007
33. Jekayinfa, S.O., Ogunshina, M.S., Oke, A. M. and Ojo, O. I. (2018). Energy Requirements for Irrigation Water Supply of Selected Schemes in Nigeria. Misr Journal of Agricultural Engineering. 35(2): 571-586. https://doi.org/10.21608/mjae.2018.95798
34. Taiwo, A. and Jekayinfa, S.O. (2018). Performance Evaluation of Single-Axle Tractors during Secondary Tillage Operation in Ultisol Soil Series of Nigeria. International Journal of Advances in Science Engineering and Technology. 6(1): 56-60
35. Adebayo, A.O., Jekayinfa, S.O. and Ahmed, N. A. (2018). Kinetic Study of Thermophilic Anaerobic Digestion of Cattle Manure in a Continuously Stirred Tank Reactor under Varying Organic Loading Rate. ARPN Journal of Engineering and Applied Sciences 13(9): 3111-3118
36. Adebayo, A.O., Jekayinfa, S.O. and Ahmed, N. A. (2018). Kinetic Study of Thermophilic Anaerobic Digestion of Cattle Manure in a Continuously Stirred Tank Reactor under Varying Organic Loading Rate. ARPN Journal of Engineering and Applied Sciences 13(9): 3111-3118
37. Jekayinfa, S.O., Oriola, K.O., Adebayo, A. S. Ola, F.A., and Akande, F.B. (2017). Effects of Some Processing Parameters on the Performance Evaluation of a Sugarcane Juice Extractor. Nigerian Journal of Engineering and Applied Sciences (NJEAS). 4(2): 113-119
38. Olaniran, J. A., Jekayinfa, S. O. and Agbarha, H. A. (2017). Life Cycle Assessment of Cassava Flour Production: A Case Study in Southwest Nigeria. Journal of Engineering and Technology Research 9(1): 6-13 https://doi.org/10.5897/JETR2015.0580
39. Onifade, T. B., Wandiga, S. O., Bello, I. A., Jekayinfa, S. O. and Harvey, P.J. (2017). Conversion of lignocellulose from palm (Elaeis guineensis) fruit fibre and physic (Jatropha curcas) nut shell into bio-oil. African Journal of Biotechnology 16(46): 2167-2180 https://doi.org/10.5897/AJB2017.16004
40. Oriola, K.O., Jekayinfa, S.O., Ola, F.A., Adedoyin, A.S. and Akande, F.B. (2017). Some Mechanical Properties of Sugarcane at Different Sizes and Loading Relevant to Design and Construction of Sugarcane Juice Extractor. Int. Journal of Engineering Research and Application 7(7): 62-70 https://doi.org/10.9790/9622-0707086270
41. Jekayinfa, S.O., Olaniran, J.A, Oloyede, C.T., Jaiyeoba, K.F. and Ogunlade, C.A. (2016). Influence of Moisture Content and Temperature on Thermal Properties of Cocoa Pods. International Journal of Organic Agriculture Research & Development 13: 47-55
42. Olaniran J.A., Jekayinfa S.O. and Olalere, E.V. (2016). Environmental Impact Assessment of Cassava Starch Production in Southwest Nigeria using Life Cycle Assessment (LCA) Model: Prospects and Problems. Science Focus. 21(1): 105 - 113
43. Jaiyeoba, K. F., Jekayinfa, S. O., Olaniran, J.A., Oloyede, C.T., Ogunlade, C. A. and Oke, A.M. (2016). Moisture-dependent Physical Properties of Cocoa (Theobroma cacao) pods. International Journal of Organic Agriculture Research & Development 13: 4046
44. Jaiyeoba, K. F., Jekayinfa, S. O., Ogunlade, C. A., Oke, A.M. and Apata, M. M. (2016). Physical and Thermal Properties of Mango (Mangiferaindica) Seeds. Science Focus. 21(1): 126 - 132
45. Onifade, T.B., Taiwo, A. and Jekayinfa, S.O. (2016). Modification of a Locally Made Electric Crop Dryer. Journal of Innovative and System Engineering. 7(2):40-51
46. Jekayinfa, S.O., Olaniran, J.A, Jaiyeoba, K.F. and Olujide, O.S. (2015). Life Cycle Assessment of Wheat Production and Processing. LAUTECH Journal of Engineering and Technology 9 (1): 79 – 86
47. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2015). Effect of Co-Digesting Pig Slurry with Maize Stalk on Biogas Production at Mesophilic Temperature. Journal of Multidisciplinary Engineering and Technology (JMEST) 2(8):2295-2300 (UK)
48. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2015). Effects of Organic Loading Rate on Biogas Yield in a Continuously Stirred Tank Reactor Experiment at Mesophilic Temperature. British Journal of Applied Science and Technology 11(4):1-9 (UK)
49. Onifade, T.B. and Jekayinfa, S.O. (2015). Application of Response Surface Methodology for Energy Analysis of Thin Layer Drying of Physic Nut (Jatropha curcas). GSTF Journal on Agricultural Engineering (JAE) 2(1): 49-59. (UK)
50. Ola, F. A. and Jekayinfa, S. O. (2015). Pyrolysis of Sandbox (Hura Crepitans) Shell: Effect of Pyrolysis Parameters on Biochar Yield. Journal of Research in Agricultural Engineering, 61(4): 170-176. (UK)
51. Olafimihan, E.O., Adebiyi, K.A. and Jekayinfa, S.O. (2015). Effect of Temperature on the Production of Ethanol Fuel from Selected Agricultural Residues. International Journal of Mechanical Engineering (IJME) 4(6): 51-56 (UK)
52. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2015). Anaerobic Digestion of Selected Animal Wastes for Biogas Production in a Fed-Batch Reactor at Mesophilic Temperature. Journal of Multidisciplinary Engineering Science and Technology 2(7): 1875-1880. (UK)
53. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2015). Energy Productions from Selected Crop Residues Through Anaerobic Digestion in a Fed-Batch Laboratory Scale Reactor at Mesophilic Temperature International Journal of Energy and Environmental Research 3(2): 12-21 (UK)
54. Jekayinfa S.O., Linke, B. and Pecenka, R. (2015). Biogas Production from Selected Crop Residues in Nigeria and Estimation of its Electricity Value. Int. J. of Renewable Energy Technology 6 (2) : 101-118 (UK)https://doi.org/10.1504/IJRET.2015.068593
55. Ohijeagbon, I.O., Waheed, M.A., Jekayinfa, S.O. (2015). Methodology for Energy and Exergy Analysis of Steam Boilers. Journal of Energy Technologies and Policy 5(28): 47-47 (UK)
56. Ola, F. A. and Jekayinfa S. O. (2014). Pyrolysis of Sandbox (Hura Crepitans) Shell and Characterization of the Solid Product. Science Focus, 19(1): 52-58.
57. Ola, F. A. and Jekayinfa S. O. (2014). Assessment of the Product Yields from the Thermal Decomposition of Mango Stone Shell. Science Focus, 19(1): 65-71.
58. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2014). Effect of Co-Digestion on Anaerobic Digestion of Pig Slurry with Maize Cob at Mesophilic Temperature. Journal of Natural Sciences Research 4(22): 66-73 (UK)
59. Ohijeagbon, I.O., Waheed, M.A., Jekayinfa, S.O. and Lasode, O.A. (2014). Exergetic Modelling of Oil -Fired Steam Boilers. Nigerian Journal of Technology (NIJOTECH) 33(4): 523-536 (Nigeria) http://dx.doi.org/10.4314/njt.v33i4.13
60. Adebayo, A.O., Jekayinfa, S.O., Akinloye, O.V., Babalola, A.M. and Usman, F.O. (2014). Design, Construction and Testing of a Plug Flow Digester for Converting Agricultural Residues to Biogas. International Research Journal on Engineering (IRJE) 2(4): 52-60 (UK)
61. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2014). Anaerobic Co-Digestion of Cattle Slurry with Maize Stalk at Mesophilic Temperature. American Journal of Engineering Research (AJER) 3(1): 80-88 (USA)
62. Jekayinfa, S.O., Olaniran, J.A. and Sasanya, B.F. (2013) ‘Life cycle assessment of soybeans production and processing system into soy oil using solvent extraction process’, Int. J. Product Lifecycle Management, 6(4): 311–321. (UK) https://doi.org/10.1111/j.1745-4530.2006.00069.x
63. Jekayinfa S.O., Afolayan, S.O., Taiwo, A. and Popoola, J.O. (2013). Energy use efficiency of on- farm- and post- pineapples production in Nigeria. Int. J. Energy Technology and Policy 9(2): 175-190 (UK) https://doi.org/10.1504/IJETP.2013.058148
64. Jekayinfa, S.O. and Scholz, V. (2013) Estimation of Possible Energy Contributions of Crop Residues in Nigeria Int. J. Energy Technology and Policy 9(2): 93-109 https://doi.org/10.1504/IJETP.2013.058109
65. Jekayinfa, S.O. and Scholz, V. (2013) Laboratory Scale Preparation of Biogas from Cassava Tubers, Cassava Peels, and Palm Kernel Oil Residues, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 35:21, 2022-2032 (USA) https://doi.org/10.1080/15567036.2010.532190
66. Adebayo, A.O., Jekayinfa, S.O. and Linke, B. (2013). Effect of Co-Digestion on Anaerobic Digestion of Cattle Slurry with Maize Cob at Mesophilic Temperature. Journal of Energy Technologies and Policy 5(7): 47-54 (USA)
67. Ohijeagbon, I.O., Waheed, M.A. and Jekayinfa, S.O. (2013). Methodology for the Physical and Chemical Exergetic Analysis of Steam Boilers. Energy, 53(2013): 153- 164 https://doi.org/10.1016/j.energy.2013.02.039
68. Jekayinfa S.O., Adebayo, A.O., Daramola, E. and Afolayan, S.O (2013). On - Farm Energetics of Mango Production in Nigeria. Renewable Energy. 51 (2013) 60 – 63 https://doi.org/10.1016/j.renene.2012.09.004
69. Ohijeagbon, I, O., Waheed, M. A., Jekayinfa, S. O. and Opadokun, O. E. (2013). Developmental Design of a Laboratory Fire-Tube Steam Boiler. Acta Technica Corviniensis – Bulletin of Engineering. 7 (1); 147-152 (UK)
70. Jekayinfa, S.O. and Olawuni, O.E. (2013). Energy Analysis and Estimation of CO2 Emission of Selected Plastic Recycling Plants in Nigeria. LAUJET Journal of Engineering and Technology. 7(2): 31-43. (Nigeria)
71. Ohijeagbon, I.O., Jekayinfa, S.O. and Waheed, M.A. (2012). Assessing the emission factors of low-pour-fuel-oil and diesel in steam boilers. International Journal of Development and Sustainability 1(3): 688 – 700 (UK)
72. Ohijeagbon, I.O., Jekayinfa, S.O. and Waheed, M.A. (2012). Cumulative Exergetic Assessment of LPFO Utilized Steam Boilers. International Journal of Exergy. 11(1): 119 – 135 (UK) https://doi.org/10.1504/IJEX.2012.049091
73. Jekayinfa S.O., Ola, F.A., Afolayan, S.O. and Ogunwale, R.O. (2012) On-farm Energy Analysis of Plantain Production in Nigeria. Journal of Energy for Sustainable Development. 16(3): 339-343 (UK) https://doi.org/10.1016/j.esd.2012.05.004
74. Jekayinfa, S.O., Ojediran, J.O., Adebiyi, K.A, Ola, F.A.,and Adeniran, A.D. (2009). Appraisal of Farm Tractor Accidents Occurrence and Prevention in Nigeria. International Journal of Disaster Prevention & Management 18(4): 451-460 (UK) https://doi.org/10.1108/09653560910984500
75. Alamu, O.J., Waheed, M.A. and Jekayinfa, S.O. (2009). Determination of Optimum Temperature for the Laboratory Preparation of Biodiesel from Nigerian Palm Kernel Oil. Energy Sources Part A 31(13): 1105-1114 https://doi.org/10.1080/10916460801907195
76. Jekayinfa, S.O. and Scholz, V. (2009). Potential Availability of Energetically Usable Crop Residues in Nigeria. Energy Sources Part A.31(8): 687-697 https://doi.org/10.1080/15567030701750549
77. Jekayinfa, S.O. (2008). Ergonomic Evaluation and Energy Requirements of Breadbaking Operations in Southwestern Nigeria. Agricultural Engineering International: the CIGR - E – Journal Manuscript EE 06 001. April, 2007 website: cigrejournal.tamu.edu.( (USA)
78. Alamu, O.J., Waheed, M.A. and Jekayinfa, S.O. (2008). Effect of Ethanol-Palm kernel Oil Ratio on Alkali-catalyzed Biodiesel Yield. Fuel 87(8-9): 1529-1533 (USA) https://doi.org/10.1016/j.fuel.2007.08.011
79. Jekayinfa, S.O. and Bamgboye, A.I. (2008). Energy Use Analysis of Selected Palm Kernel Oil mills in South Western Nigeria. Energy 33(1): 81-90 (USA) https://doi.org/10.1016/j.energy.2007.08.008
80. Waheed, M.A., Jekayinfa, S.O., Ojediran, J.O. and Imeokparia, E.O. (2008). Energetic Analysis of Fruit Juice Processing Operations. Energy. 33(1): 35-45 https://doi.org/10.1016/j.energy.2007.09.001
81. Alamu, O.J., Waheed, M.A. Jekayinfa, S.O. and Akintola, T.A. (2007). Optimal Tranesterification Duration for Biodiesel Production from Nigerian Palm Kernel Oil. Agricultural Engineering International: the CIGR - E – Journal. Manuscript EE 07 018 Vol. IX December 2007. (USA)
82. Alamu, O.J., Waheed, M.A. and Jekayinfa, S.O. (2007). Biodiesel Production from Nigerian Palm Kernel Oil: Effect of KOH Concentration on Yield. Journal of Energy for Sustainable Development. 11(3):77-82. (USA) https://doi.org/10.1016/S0973-0826(08)60579-7
83. Alamu, O.J., Waheed, M.A. and Jekayinfa, S.O. (2007). Alkali-catalysed Laboratory Production and Testing of Biodiesel Fuel from Nigerian Palm Kernel Oil. Agricultural Engineering International: the CIGR - E – Journal. Manuscript EE 07 009 Vol.IX July 2007. (USA)
84. Jekayinfa, S.O. and Olajide, J.O. (2007). Analysis of Energy Usage in the Production of Three Selected Cassava - Based Foods in Nigeria. Journal of Food Engineering 82(2): 217-226. (UK) https://doi.org/10.1016/j.jfoodeng.2007.02.003
85. Jekayinfa, S.O. and Bamgboye, A.I. (2007). Development of Equations for Estimating Energy Requirements of Palm- Kernel Oil Processing Operations. Journal of Food Engineering. 79(1): 322 - 329. (UK) https://doi.org/10.1016/j.jfoodeng.2006.01.060
86. Jekayinfa, S.O. (2007). Energetic Analysis of Poultry Processing Operations. Leonardo Journal of Sciences 10: 77-92. (Romania)
87. Bamgboye, A.I. and Jekayinfa, S.O. (2007). Trends and Effective Use of Energy Input in the Palm Kernel Oil Mills. Tropicultural 25(1): 7-11 (UK)
88. Jekayinfa, S.O. (2006). Effect of Airflow Rate, Moisture Content and Pressure Drop on Airflow Resistance of Locust Bean Seed. Agricultural Engineering International: the CIGR - E – Journal Manuscript BC 04 008. May, 2006. Website: cigrejournal.tamu.edu. (USA)
89. Jekayinfa, S.O. (2006). Energy Consumption Pattern of Selected Mechanized Farms in South Western Nigeria. Agricultural Engineering International: the CIGR - E – Journal Manuscript EE 06 001. April, 2006 website: cigr-ejournal.tamu.edu.( (USA)
90. Jekayinfa, S.O. and Bamgboye, A.I. (2006). Estimating Energy Requirements in Cashew nut Processing Operations. Energy 31(8/9): 1305 – 1320 (USA) https://doi.org/10.1016/j.energy.2005.07.001
91. Taiwo, A. and Jekayinfa, S.O. (2005). A Sustainable Agricultural Land Development Technique in Nigeria. International Journal of Applied Agricultural and Apicultural Research. 2(1): 55 -64 (Nigeria)
92. Adebiyi, K.A. and Jekayinfa, S.O. and J. O. Ojediran (2005) Development of Predictive Model for Optimal Maintenance Interval of Sawmill Machinery in South Western Nigeria. Science Focus. 10(3):10-16. (Nigeria)
93. Jekayinfa, S.O., Waheed, M.A., Adebiyi, K.A. and Adebiyi, F.T. (2005). Effect of Cassava Fluid on Corrosion Performance of Mild Steel. Anti-Corrosion Methods and Materials. 52(5):286-292. (UK) https://doi.org/10.1108/00035590510615785
94. Jekayinfa, S.O. and Durowoju, M.O. (2005). Performance Evaluation of Mango Stone Decorticator. Nutrition and Food Science. 35(2): 118 – 120. (UK) http://doi.org/10.1108/00346650510585903
95. Jekayinfa, S.O., Adebiyi, K.A., Waheed, M.A. and Owolabi, O.O. (2005). Appraisal of Farm Tractor Maintenance Practices and Costs in Nigeria. International Journal of Quality in Maintenance Engineering. 11(2): 152 – 168. (UK) https://doi.org/10.1108/13552510510601357
96. Adebiyi, K.A., Jekayinfa, S.O. and Charles-Owaba, E.A. (2005). Appraisal of Safety Practices in Agro-allied Industries in Southwestern Nigeria. International Journal of Disaster Management & Control. 14(1): 80 – 88. (UK) https://doi.org/10.1108/09653560510583842
97. Jekayinfa, S.O. and Omisakin, O.S. (2005). The Energy Potentials of Some Agricultural Wastes as Local Fuel Materials in Nigeria. Agricultural Engineering International: the CIGR - E – Journal Manuscript. May, 2005. EE 05 003 website: cigrejournal.tamu.edu. (USA)
98. Jekayinfa, S.O., Okekunle, P.O., Amole, I.G. and Oyelade, J.A. (2005). Evaluation of Corrosion Cost in Some Selected Food and Agro-Processing Industries in Nigeria. Anti-Corrosion Methods and Materials. 52(4): 214 – 218. (UK) https://doi.org/10.1108/00035590510603238
99. Waheed M.A. and Jekayinfa, S.O. (2005). Review of Solar Powered Refrigeration Systems for Rural Dwellers in Nigeria. International Journal of Applied Agricultural and Apicultural Research. 1(1): 219 -223 (Nigeria)
100. Durowoju, M.O. and Jekayinfa, S.O. (2004). Performance Evaluation of Two Parabolic Concentrator-Solar Cookers under a Tropical Climate. Science Focus 7 : 35-39
101. Jekayinfa, S.O. and Bamgboye, A.I. (2004). Energy Requirements for Palm-Kernel Oil Processing Operations. Nutrition and Food Science, 34(4): 166 –173. (UK) https://doi.org/10.1108/00346650410544864
102. Adeyemi, O.A. and Jekayinfa, S.O. (2004). The Role of Plant Maintenance on Energy Efficiency: A Flour Mill as a Case Study. Journal of Science, Engineering and Technology 11(2): 5513 -5522. (Nigeria)
103. Ojediran J.O, Jekayinfa S.O, Olajide J.O and Adebiyi K.A. (2004). The Status of Agro – Processing Equipment Fabrication Industry in Southwestern Nigeria Zuma Journal of Pure and Applied Science 6(1) 210 – 218. (Nigeria)
104. Ojediran J.O, Jekayinfa S.O and Adebayo G.A. (2004). An Evaluation of Energy Requirements of Some Agricultural Engineering Workshop Tasks. Zuma Journal of Pure and Applied Science 6(1) 219 – 223. (Nigeria)
105. Olajide, J.O., Jekayinfa, S.O. and Adeola, S.A. (2003). Development and Testing of an Extractor for Small and Medium Scale Fruit Juice Processors Journal of Science, Engineering and Technology. 10 (1): 4768 – 4772. (Nigeria)
106. Alamu, O.J. and Jekayinfa, S.O. (2003). Effect of Pipe Dimension on Optimum Temperature for Pipeline Conveyance of Incompressible Viscous Fluids. The Nigerian Academic Forum. 2(2): 33 – 43. (Nigeria)
107. Jekayinfa, S.O. (2003). Empirical Equations for Determination of Pressure Drop across a Column of Cocoa Beans. Science Focus 5: 15 – 19. (Nigeria)
108. Jekayinfa, S.O., Alamu, O.J. and Adigun, O.J. (2003). Energy Requirements for InStore Drying of Cereal Grains. Journal of Applied Science and Technology. 3(1):17-20. (Nigeria)
109. Jekayinfa, S.O., Ojediran, J.O. and Okekunle, P.O. (2003) An Evaluation of Corrosion Prevention Practices in Agricultural Equipment Manufactured and Used in Nigeria. Anti- Corrosion Methods and Materials, 50(5): 364 – 370. (UK)
110. Jekayinfa, S.O., Olafimihan, E.O., and Odewole, G.A. (2003). Evaluation of a Pedal-Operated Cassava Grater. LAUTECH Journal of Engineering and Technology. 1(1): 82 – 86 (Nigeria)
111. Jekayinfa, S.O. (2002). On-farm Evaluation of a Motorized Plot Harvester during Cowpea Harvesting. Journal of Applied Sciences 5 (3): 2933 – 2940. (Nigeria)
112. Jekayinfa, S.O. and Baba, S.G. (2002). Some Common Problems Affecting the Efficiency of Locally Fabricated Pepper Grinding Machines Used in Oyo State. Journal of Engineering Applications 3 (1): 39 – 45. (Nigeria)
113. Ojediran, J.O. and Jekayinfa, S.O. (2002). Performance Evaluation of a Centrifugal Palm-nut Cracker. Journal of Applied Science and Technology. 2 (1): 44 – 47. (Nigeria)
114. Jekayinfa, S.O. (2001). Energy Accounting in Industrialized Agriculture – A Review. Journal of Applied Sciences 4 (1): 1562 – 1577. (Nigeria)
115. Jekayinfa, S.O. and Onawumi A.S. (2001). Some Technical Aspects of Corrosion in Agriculture. Advances in Agricultural Engineering. 1 (1): 12 – 17. (Nigeria)
116. Jekayinfa, S.O. (2001). Some Problems of Earth Moving Equipment Used in Nigeria. International Journal of Research in Science and Education 1(1): 153-157. (Nigeria)
117. Jekayinfa, S.O. (2000). A Study of Resistance to Airflow in Cocoa Beans Drying. Journal of Science, Engineering and Technology 8 (1): 3072 – 3082. (Nigeria)
118. Onawumi, A.S. and Jekayinfa, S.O. (2000). The Engineering Process Design for Hydraulic Oil Press – Journal of Engineering Applications. 2 (1): 12 – 17. (Nigeria)
119. Jekayinfa, S.O. (2000). Static Pressure Drop in Fixed Beds of Cocoa Beans as Affected by In Situ Bulk Density. Annals of Engineering Analysis
Published Articles in Conference Proceedings
116. Jekayinfa, S.O., Ojediran, J.O. and Okunlola, G.S. (2002). Relationship between Diesel Consumption and Selected Vehicle Parameters for Articulated Vehicles Used in Nigeria. Proceedings of the 4th Annual Engineering Conference of School of Engineering and Engineering Technology, Federal University of Technology, Minna. October 2002. Pp 107 – 112. (Nigeria)
117. Jekayinfa, S.O. and Bamgboye, A.I. (2003). An Analysis of Energy Use Patterns in Nigeria’s Industrial Sector: A Case Study of a Cashew Nut Processing Plant. Proceedings of the 4th International Conference of the Nigerian Institution of Agricultural Engineers, Vol. 25, 70 – 77 (Nigeria)
118. Jekayinfa, S.O. (2005). Development of a Grain Screw Dispensing Machine. Proceedings of the 6th International Conference of the Nigerian Institution of Agricultural Engineers, Vol. 27, 177-181. (Nigeria)
119. Jekayinfa, S.O. and Scholz, V. (2007). Energy Potentials of Crop Residues in Nigeria.13th International Conference for Renewable Resources and Plant Biotechnology (NAROSSA 2007), Poznan, Poland (Poland)
120. Jekayinfa, S.O. and Scholz, V. (2007). Assessment of Availability and Cost of Energetically Usable Crop Residues in Nigeria. Conference on International Agricultural Research for Development (Tropentag 2007). Universities of Kassel-Witzenhausen and Göttingen. Witzenhausen Germany. October 9-11, 2007. (Germany)
121. Adebayo, A.O. and Jekayinfa, S.O. (2010): Production of Biogas from Selected Crops and Animal residues in Nigeria. A paper presented at Humbolt-Kolleg International Conference, held at the Senate Chamber of Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria. 11th-14th January, 2010. (Nigeria)
122. Jekayinfa, S.O. and Adebayo, A.O. (2010): Energy Analysis of Selected Agricultural Engineering Workshop Tasks. A paper presented at the 2010 ASABE Annual International Meeting, Pittsburgh, Pennsylvania, June 20 - June 23, 1008305. (USA) https://doi.org/10.13031/2013.29606
123. Adebayo, A.O., Linke, B. and Jekayinfa, S.O. (2011): Investigations on Biogas Potential of Maize Stalk under Mesophilic Condition. A paper presented at the 2011 ASABE Annual International Meeting, Louisville, Kentucky, USA, August 7 - 10, 2011, 1111523. (USA) https://doi.org/10.13031/2013.38513
124. Adebayo, A.O., Jekayinfa,S.O. and B. Linke (2012): Biogas Potential of Cow Slurry in Continuously Stirred Tank Reactors at Mesophilic and Thermophilic Temperatures. A Conference paper for the 2012 ASABE Annual International Meeting Sponsored by Texas, July 29 – August 1, 2012, Paper Number: 12-1340549 (USA) https://doi.org/10.13031/2013.41922
125. Adebayo, A.O., Jekayinfa, S.O. and B. Linke (2012): Effect of Co-Digestion on biogas Production-A case study of Cow Slurry with Maize Cob. A Conference paper for the ASABE Annual International Meeting Sponsored by Texas, July 29 – August 1, 2012, Paper Number: 12-1340550 (USA) https://doi.org/10.13031/2013.42196
126. Adebayo, A.O., Jekayinfa, S.O and Linke, B. (2015): Enhancement of Biogas Yields from Co-Digestion of Pig slurry with maize stalk at Mesophilic Temperature. A paper presented at the Humboldt Kolleg, 2015. Harvesting Research Outcomes: A Practical Plan to Confirm Achievement of Millennium Development Goals held at the Senate Chamber of Ladoke Akintola University of Technology, Ogbomoso, 13th-16th January, 2015. (USA)
127. Jekayinfa, S.O., Oriola, K.O., Ola, F.A., Adedoyin, A.S. and Akande, F.B. (2016). Some Mechanical Properties of Sugarcane at Different Sizes (Diameters) Useful for the Design and Construction of Sugarcane Juice Extractor. Proceedings of the 37th Annual Conference and Annual General Meeting–“Minna 2016” 221-229
128. Ogunlade, C. A., Oke, A. M., Jekayinfa S. O. and Oloyede, C. T. (2018). Influence of Moisture Content on Some Engineering Properties of Chicken Feathers. Proceedings of the 2018 Annual Conference of the School of Engineering & Engineering Technology (SEET), The Federal University of Technology, Akure, Nigeria, 17-19 July, 2018: 74-84.
129. Jekayinfa, S. O., Pecenka, R., Jaiyeoba, K. F., Ogunlade, C. A. and Oni, O. (2018). Life Cycle Assessment of Local Rice Production and Processing System in Nigeria. The Proceedings 12th CIGR Section VI International Symposium 22 –25 October, 2018: 617632.
130. Onifade, T., Jekayinfa, S. Uthman, F. (2019). Exergy analysis of thin layer drying of physic nuts (Jatropha curcas) using response surface methodology. Proceedings of the OAU, Faculty of Technology Conference. 321-328
131. Olaniran, J.A., Jekayinfa, S.O. and Adekanye, T.A. (2020). Energy consumption and environmental burden analysis of cassava tuber production in Ogbomoso Southwest Nigeria IOP Conference Series: Earth and Environmental Science 445 (1), 012062 https://doi.org/10.1088/1755-1315/445/1/012062
132. Ogunjirin, O.C., Jekayinfa, S.O., Olaniran, J.A. and Ogunjirin, O.A. (2020). Environmental life cycle assessment of cowpea production, storage and disposal in Ilorin, Kwara State, Nigeria IOP Conference Series: Earth and Environmental Science 445 (1), 012040 https://doi.org/10.1088/1755-1315/445/1/012040
133. A. O. Adebayo, S. O. Jekayinfa, P. A. Ozor, C. Mbohwa and C. Herrrmann, "Biogas Production Potential of Poultry Discharge in a Batch Reactor at Mesophilic Temperature," 2019 7th International Renewable and Sustainable Energy Conference (IRSEC), 2019, pp. 1-5, https://doi.org/10.1109/IRSEC48032.2019.9078265.