Sirag, Nizar, Imd M Tajeldin, Mohamed Abubakr, Alaa Mudathir, Isra Bashir Bashir, & Salma Mohammed. " Determination of Antioxidant Activity of some Varieties of Onion (Allium cepa L.) grown in Sudan." Gezira Journal of Health Sciences [Online], 11.2 (2015): n. pag. Web. 3 Jun. 2026