ACTA Pharmaceutica Sciencia 2004 , Vol 46 , Num 3
EFFECT OF FLUORESCENT AND UV LIGHT ON MYCOTOXIN PRODUCTION UNDER DIFFERENT RELATIVE HUMIDITIES IN WHEAT GRAINS
M M ATAİLA, N M HASSANEİN, A A EL-BEİH, Y A YOUSSEF
Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Cairo, Egypt UV and flourescent light were investigated for their ability to detoxify mycotoxins or inhibit the production of mycotoxins in wheat grains to avoid their hazardous effect. Four fungal isolates known to be highly toxin producers, i.e., Aspergillus parasiticus, Fusarium verticillioides, Scopulariopsis jusca and Verticilliun lecanii were grown on wheat grains. The inoculated wheat grains were exposed to fluorescent light, short and long UV and stored for three weeks under different relative humidities (50-80%) at room temperature. Some mycotoxins were completely eliminated while others varied in their concentrations depending on relative humidity and period of illumination. Also isolates varied in their sensitivity to illumination at any exposure period. Keywords : FUNGI; MYCOTOXINS; LIGHT; RELATIVE HUMIDITY; WHEAT GRAINS

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