Abstract Proximate composition of flour from raw and Boil (defatted) samples of locust bean as well as its physicochemical composition of the oil extracted from the two samples were determined to know their potentials for industrial and human consumption without due fermentation method normally adopted for its consumption. The results revealed that the moisture content for raw and Boil (defatted) samples (11.21±0.51, 7.25±0.01) respectively. Crude protein (25.52±0.31, 28.00±0.32), crude fibre (8.40±0.21, 8.41±0.22), Ash content (5.45±0.25, 5.44±0.26), crude fat (20.65±0.71, 10.55±0.01) while carbohydrate is (28.77±0.25, 38.35±0.33) respectively. The oil samples were investigated for their physicochemical parameters. The result investigated for physical properties for both raw and boiled sample oil showed no significant difference for refractive index (1.45±0.02, 1.46±0.01), specific gravity (0.84±0.01, 0.86±0.01), smoke point (185.00±0.01, 160.00±0.01), flash point (225.00±0.02, 220.00±0.01 and fire point (235.00±0.01, 230.00±0.02) °C, but differ for pH(3.80±0.00, 4.60±0.00) and % oil yield (25.50±0.02, 35.05±0.02) respectively. The result of the chemical parameters of raw and boiled locust bean seed oil (Parkia biglobosa) revealed that Acid value (1.80±0.02, 1.32±0.01) mg/g, free fatty acid (8.45±0.03, 7.48±0.02) oleic, saponification value (320.05±0.02, 230.06±0.01)mg/g, iodine value (120.42±0.01, 125.01±0.03)mg/g, while peroxide value (5.50±0.03, 3.45±0.05) meq/kg for raw and boiled locust bean seed oil respectively. The yield indicates that both oil samples are good source of oil. But the assessment of both indicated that flour and oil from the boil sample had good domestic, industrial and commercial application for human consumption.
Keyword: Chemical, Physicochemical, Proximate, Locust Bean Seed, Oil.