Ayokunle Oluwasanmi Fagunwa, Adedayo Thomas Ayorinde, Oluwafemi Emmanuel Ogundahunsi

Random Surface Methodology: Process Optimization for Peanut Oil Extraction in A Mechanical Oil Expeller

The extraction process of peanut oil has been a major concern for local processors due to the difficult task it constitutes during processing. The use of oil expellers has been found to reduce the difficulty in this task yet different processing factors tend to affect the efficiency of those oil expellers. In this study, the optimum peanut oil processing factors and their interaction were investigated using Response Surface Methodology (RSM) with fractional factorial design (33) model of Central Composite Design (CCD). Processing factors such as Moisture Content (10, 12, and 14% db), Peanut Temperature (50, 65, and 80°C), and Water Quantity added during extraction (12, 14, and 16 ml). This aimed at providing the optimum parameter needed to obtain the optimum oil yield using a peanut oil expeller. From this study, it was observed that all three factors considered affecting the oil yield of peanuts during extraction. Only water quantity added during extraction is statistically different. The optimum condition of the oil extraction processing parameter was observed at 50oC, 10 db, and 120 ml. The correlation coefficient (R-squared) of the model analysis was found to be 0.8901.

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Adeeko KA, Ajibola OO. 1990. Processing Factors Affecting Yield and Quality of Mechanically Expressed Peanut Oil. Journal of Agricultural Engineering Research. 45: 31-43.
Adejumo BA, Inaede SG, Adamu TS. 2013. Effect of moisture content on the yield and characteristics of oil from morınga oleıfera seeds. Academic Research International. 4 (4).
Alonge AF, Olaniyan AM, Oje K, Agbaje CO. 2003. Effects of dilution ratio, water temperature, and pressing time on oil yield from groundnut oil expression. Journal of food science and technology. 40: 652-655.
Aluko OB, Sanni LA, Akingbade TO, Ogundahunsi OE. 2020. Effects of impurity on the efficiency of a legume threshing machine. African Journal of Agricultural Research. 16 (12): 1700-1709.
Ajao KR, Ajimotokan HA, Olaomi J, Akande HF. 2010. Design and development of a peanut oil expelling machine. Journal of Agricultural Technology 6(4): 643-648.
Curt B, Chriswaterguy O. 2008. “Small Scale Peanut Extraction Machine.” Oil Extraction. China. Pp 5.of response surface methodology and central composite design for the optimization of textile dye degradation by wet air oxidation. International Journal of Industrial Chemistry. Pp 125
Food and Agriculture Organization 1998. Agriculture Service Bulletin on Peanut Processing, Macedonia. 11: 81 -83 Jack PD, Daniel SS, Kristin MP, Lisa LD, Timothy HS. 2012.
Refractive Index and Density Measurements of Peanut Oil for Determining Oleic and Linoleic Acid Content, Journal of the American Oil Chemists’ Society, 90(2).
Ogundahunsi OE, Popoola OO, Akangbe OE. 2021. Performance Evaluation of Groundnut Oil Extracting Machine Developed for Small Scale Farmers. Journal of Food Processing and Technology 12(6), 1-5.
Ogunsina BS. 2010, Parameters for optimizing whole kernel out- turn of cashew nuts, A Ph.D. A thesis submitted to the Department of Agricultural and Environmental Engineering. Faculty of Technology, University of Ibadan, Nigeria.
Olaomi J. 2008. “Design and Construction of a Motorized Peanut Oil Expelling Machine” B. Eng Thesis, Department of Mechanical Engineering, University of Ilorin, Nigeria.
Olatunde OB, Ajav EA, Fatukasi SO. 2014. Design and Fabrication of Peanut (Arachis Hypogaea) Roaster cum Expeller. International Journal of Science and Technology. 3(3).
Orhevba BA, Chukwu O, Osunde ZD, Ogwuagwu V. 2013. Influence of moisture content on the yield of mechanically expressed neem seed kernel oil. Academic Research International. 4(5): 252-257.
Rezzoug S, Boutekedjiret C, Allaf K. 2005. Optimization of operating conditions of rosemary essential oil extraction by a fast-controlled pressure drop process using response surface methodology. Journal of Food Engineering, Elsevier. 71 (1): 9-17.
Samira HH, Somayeh TD. 2017. The Study of Ultrasound- Assisted Enzymatic Extraction of Oil from Peanut Seeds Using Response Surface Methodology. European Journal of Lipid Science and Technology. 120 (3): 1700252.