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** Department of Plant Biology, Faculty of Life Science, Bayero University Kano *Corresponding Author: ABSTRACT Groundnut oil is the cheapest and most extensively used vegetable oil in many countries.Different methods were used to obtain the oil from the groundnuts, which include traditional or manual, mechanical (with or without roasting) and solvent extraction methods. There are some variations in the extraction methods that may affect both the yield and the quality o methods on the quality of groundnut oil in selected Kano municipal LGA, Kano State was conducted. Two extraction methods were identified, after carrying out an investigation using a structured questionnaire. These are mechanicallyextracted without roasting (M1) and mechanical extraction with roasting (M2) methods. For comparison, the traditional extraction method (M3) usually applied by local extractors was also studied.An ANOVA was used to analyze the data. The physicochemical properties of the samples were analyzed and compared to NAFDAC standards. Iodine value (IV), Saponification value (SV), Specific gravity (SG), Acid value (AV) and Peroxide value (PV) were de were highly significant. M2 was found to have the highest IV ( meq/kg) while M1 has the highest SV ( (5.92 mg/g), SV (44.835 mgKOH/g PV and SG conform to the NAFDAC standard in all the three methods, while those for IV and SV declined. To achieve the best quality results, the study concludes that the mechanical extraction method with roasti

Effect of extraction methods on the quality of groundnutoil in some small-scale industries in Kano state