Results:
Sweet orange seed contained 9,12-octadecadienoic acid (62.18%), grape seed, erucic acid (43.17),
lime seed, oleic acid (52.42%) and watermelon seed linoleic acid (61.11%) as the major fatty acid
present. Among the four oils tested, grape seed oil had the highest acute toxicity with LC50 value
of (156.2 依 0.37) 毺g/mL while orange seed oil had the highest lethal toxicity with LC50 (7.59 依 0.35)
毺g/mL value. Lime seed oil IC50 (14.49 依 3.54) 毺g/mL showed the highest antioxidant potential of
about 70% at 1 mg/mL concentration which was more significant than the reference compounds
gallic acid and 毩-tocopherol with IC50 value of (201.10 依 1.65) and (54.86 依 2.38) 毺g/mL
respectively. The yield of oil from these seeds varied from 9.583% to 24.790% with the oils being
rich in essential fatty acids.