Detection of ochratoxin produced by A. ochraceus in feedstuffs and its control by γ radiation

Evaluation of viability of Aspergillus flavus and aflatoxins degradation in irradiated samples of maize

“…The sensitivity of fungi to gammaradiation has been established by Aziz et al (3) who recorded that the dose required for complete inhibition of fungi in different food and feed products ranged from 4 to 6 kGy. There are a number of reports which suggest that moulds are very sensitive to gamma-radiation and in addition their mycotoxin production decrease after irradiation (16,21).…”

Radiação gama sobre a micobiota de ração avícola e Aspergillus spp.

“…O decréscimo na contagem com o aumento da dose também foi observado por REFAI et al (1996) ao avaliarem o efeito sobre A. ochraceus, previamente inoculado (10 6 ufc g -1 ) em ração. Nesse caso, o fungo foi completamente inibido a 4kGy.…”

Effect of Heat Treatment and Gamma Irradiation on the Total Bacterial Count of Selected Millet Grains (Jowar, Bajra and Foxtail)

“…Prior to irradiation, the fungi formation was found to be 5.3 × 10 4 CFU/g, where as it was decreased to 2.1 × 10 4 , 2.1 × 10 4, 4 × 10 2, 3 × 10 2 and 3 × 10 CFU/g after radiation treatment at doses of 0.25, 0.50, 0.75, 1.0, and 2.0 kGy, respectively. Reduction in the fungal incidence rate in millet grains after radiation might be due to high sensitivity of the fungus and mold to gamma radiation, since the radiation process causes direct and indirect damage to the DNA (Refai et al, 1996;McNamara et al, 2003 (48.23 percent, p<0.05). Significant reductions in the fungal count were observed with heat treatment, 1.0 and 2.5 KGy of irradiation treatments (p<0.01).…”