Effect of Gamma-irradiation on aflatoxin B1 produced by aspergillus parasiticus in barley containing antimicrobial food additives

Influence of gamma irradiation on, growth and aflatoxin B1 produced by aspergillus parasiticus in ba supplemented with sodium chloride, potassium sorbate and sodium benzoate was investigated. Total viable population of A. Parasiticus and aflatoxin B1 production decreased significantly by increasing gamma irradiation doses. No growth or aflatoxin B1 production occurred at 4.0 KGy. Increasing the concentration of NaCl reduced the total viable population A. Parasiticus as well as the accumulation of aflatoxin B1. No growth and aflatoxin B1 production occurred in barley treated with 2.0 KGy and 6% NaCl. Potassium sorbate and sodium benzoate at concentration 500 ppm reduced the population of A. Parasiticus and the levels of aflatoxin B1 over 100 days. At 2.0 KGy, a sharp drop in aflatoxin B1 level occurred in barley by 2% NaCl and 500 ppm potassium sorbate and sodium benzoate. At 2.0 KGy, 2% NaCl and 1000 ppm potassium sorbate and sodium benzoate completely inhibited growth and aflatoxin B1 production by A. parasiticus for 100 days of incubation