Effects of Gamma-Ray on the Destruction of Aflatoxin in Peanut

Abstract

Effect of gamma-ray in the destruction of aflatoxin in peanut were studied. Forty peanut samples available in the market from different parts of the country were inoculated with A. flavus. After incubation at room temperature for a certain period of time, the inoculated peanut samples were irradiated with 6.4 kGy dose. The concentration of aflatoxin B1 in irradiated and non-irradiated samples were determined. It was found that there was no signiticant differences on the average concentration of aflatoxin b1 in 22 out of 40 peanut samples (55%) were varied from 0 to 4834 ppb and mostly (42.5%) found above the level of the standard value. Maximum microbial load and aflatoxin concentration were found on 9 day of incubation, approximately 1.04 x 10¹⁰ colonies and 1200 ppb respectively.