Browsing by Author "Omeiza N.A."

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    Physicochemical, Nutritional and Antioxidant Properties of Momordica charantia and Citrullus vulgaris seed oil extracts.
    (Centrepoint Journal (Science Edition), 2019-05) Abdulrahim H. A; Zubair M. F; Ibrahim S.O; Nafiu A.B; Baba U. A; Adebayo A. A.; Musa D. M.; Omeiza N.A.; Hamid A.A.
    Two underutilized tropical seeds were investigated for their nutritive, physicochemical and biological potentials. Oils were extracted from the seeds with n-hexane using Soxhlet extractor. The fatty acid of the oils was determined by gas chromatography-mass spectrometry (GC-MS). Amino acid profile was elucidated from defatted seed cake by alkaline hydrolysis using PTH 120 A model. Proximate analysis was done and the in vitro antioxidant potential of the crude oil were investigated using 1,1– diphenyl-2-picryl hydrazyl (DPPH) against Ascorbic acid as standard by zones of inhibition methods. Proximate analysis shows that the seed cake was rich in lipid (25.49-26.55%), protein (18.28-34.24%) and carbohydrate (25.61-34.83%) with high energy density (441.85-478.35 kcal/kg). polyunsaturated fatty acid (PUFA) 9.cis.,11. trans.t,13. trans.- octadecatrienoic (39.16 %) was the most abundant fatty acid in M. charantia. Oleic acid, a monounsaturated fatty acid appears in both seed oil. The oils also contain saturated fatty acids such palmitic acid and stearic acid in appreciable quantity. The quality assessment showed that C. vulgaris has high percentage of PUFA than M. charantia compared to WHO/FAO standard. Twenty amino acids were detected in each of the seed cake, glutamic acid (15.59 vs 14.84), arginine (10.58 vs 12.21), aspartic acid (9.30 vs 8.71), glycine (7.86 vs 6.25), alanine (6.25 vs 5.19) and leucine (5.25 vs 7.59) in M. charantia and C. vulgaris respectively. The oil from seed also demonstrated significant antioxidant potential compare to ascorbic acid. Both seeds could be a good source of vital fatty acids and amino acids. The seed cake can also serve as viable source of amino acids which could help the world to fight protein deficiency. Keywords: Proximate analysis, Amino acid profile, Antioxidants, Momordica charantia, Citrullus vulgaris.