compositional study and antioxidant potential of <em>ipomoea hederacea</em> jacq. and <em>lepidium sativum</em> l. seeds

The present investigation has been carried out to determine the proximate composition, amino acids, metal contents, oil composition as well as the antioxidant capacity of the seeds of <em>Ipomoea hederacea </em>Jacq. and <em>Lepidium sativum</em> L. Proximate composition indicated a great difference in oil (14.09 ± 0.66, 28.03 ± 1.05) and fibre (16.55 ± 0.31, 6.75 ± 1.20) contents for <em>I. hederacea </em>and <em>L. sativum</em>, respectively. Fatty acid profile indicated that oleic acid (19.50 ± 0.37, 30.50 ± 0.16) and linoleic acid (52.09 ± 0.48, 8.60 ± 0.38) are the major fatty acids. γ-Tocopherol and d-tocopherol (28.70 ± 0.14, 111.56 ± 0.37) were the most abundant in the seed oil of <em>I. hederacea</em> and <em>L. sativum</em>, respectively. Results of TEAC, FRAP and TRAP antioxidant assays indicated that <em>L. sativum</em> has much greater antioxidant potential than <em>I. hederacea</em>.