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Journal on Processing and Energy in Agriculture
2011, vol. 15, br. 2, str. 63-66
jezik rada: engleski
vrsta rada: izvorni naučni članak
objavljeno: 15/06/2011
Preliminarna istraživanja uticaja jonizujućeg zračenja na Aspergillus spp. i aflatoxin B1 zaraženo zrno kukuruza
University of Bologna, Department of Veterinary Public Health and Animal Pathology, Alma Mater Studiorum, Bologna, Italy

e-adresa: a.mariotti@unibo.it

Sažetak

Cilj ovog istraživanja bio je ocenjivanje učinka jonizujućeg zračenja na Aspergillus spp. i na aflatoksin B1 na nivoima kontaminacije kukuruznog zrna. Osam uzoraka kukuruza ozračeni su jonizujućim zračenjem odnosno dozama od 3, 5, 7 i 10 kGy. Kontrolni uzorci pokazali su ukupan broj održivih miceta od 106 CFU/g a srednji nivo aflatoksina B1, otkriven pomoću HPLC/FL, bio je 1212.8, medijana 1319 ppb. Učinak γ zračenja na Aspergillus spp. izaziva zavisno od doze zračenja smanjenje u ukupnom broju plesni i izgled nekih mutanata. AFB1 kontaminacija ocenjena je u uzorcima ozračenim sa 10 kGy, maksimalna ukupna prosečna apsorbovana doza zračenja koju dopušta Direktiva Evropske Zajednice. Rezultati su pokazali povećanje AFB1 sa srednjim nivoom od 1975,8 ppb i medijan 1924,5 ppb.

Ključne reči

HPLC; Aspergillus spp.; AFB1; γ zraci; kukuruz

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