Zearalenone: Incidence, toxigenic fungi and chemical decontamination in Egyptian cereals
✍ Scribed by Abd Alla, E. -S. A. M.
- Book ID
- 102212580
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 397 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0027-769X
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✦ Synopsis
Abstract
An investigation was made for the occurrence of Zearalenone (ZEN) and Zearalenone producing fungi in cereals (corn, 50 samples; rice, 45 samples; wheat, 40 samples) collected from Egypt. ZEN was detected in 15 of 50 corn samples with an average concentration of 22.3 ppb. The incidence of ZEN in rice samples was 8.9% (4 samples of 45), and the average was 15.5 ppb. Out of 40 wheat samples 5 samples were contaminated with ZEN (12.5%) with an average of 8.8 ppb. Seventy‐nine Fusarium strains belonging to 9 different species were isolated from Egyptian cereals, and when tested for ZEN production only 26 isolates were Zearalenone producer. Efficiency of H~2~O~2~ for destruction of ZEN in contaminated corn was studied at different concentration (3, 5 and 10%). The results revealed that per cent of disappearance of ZEN was found to be dependent upon the concentration of H~2~O~2~, temperature and period of exposure. The highest per cent of degradation was 83.9%, with 10% H~2~O~2~ at 80 °C for 16 h, followed by 75% at the same conditions for 8 h, while the lowest one obtained by 3% H~2~O~2~ at 50 °C for 2 h.