The growth of Aspergillus parasiticus and aflatoxins production were inhibited during storage of three important cereals (wheat, maize and rice) using leaves of neem (Azadirachta indica) and kikar (Acacia nilotica). Cereals were inoculated with mould spores and stabilized by neem and kikar leaves-powder. Test samples with moisture levels of 21% were stored at 30 degrees C for a period of 9 months. Aflatoxins were quantified at different time intervals in stored cereals. Neem leaves fully inhibited all types of aflatoxins synthesis for 4 months in wheat and for 2 months in maize while in rice inhibited synthesis of only B-2, G(1) and G(2) aflatoxin for 3 months. Kikar leaves fully inhibited aflatoxin B-2, G(1) and G2 for 3 months in wheat, and for 2 months in maize. Among two investigated plants, neem leaves were found more effective for preventing the production of all types of aflatoxins in cereals' long-term storage. (C) 2015 Elsevier Ltd. All rights reserved.