title: Stability of fumonisins at different storage periods and temperatures in gamma-irradiated maize.
abstract: The effect of gamma-irradiation on fumonisin B1 (FB1) and fumonisin B2 (FB2) occurring in maize materials has been investigated together with the stability of fumonisins in gamma-irradiated maize stored at different temperatures (-18 to +40 degrees C) for different periods (2, 4, 13 and 26 weeks). Fifteen KGy gamma-irradiation was required to sterilize efficiently maize flour. This process caused a decrease in fumonisin content of about 20%. The stability studies showed that fumonisins are stable in gamma-irradiated maize for at least 6 months at 25 degrees C or at least 4 weeks at 40 degrees C. These data indicate that gamma-irradiation is an appropriate technique for obtaining sterilized maize materials to be used for intercomparison studies on analytical procedures for the measurement of the fumonisin content.
authors.affiliation: Istituto Tossine e Micotossine da Parassiti Vegetali, Consiglio Nazionale delle Ricerche, Bari, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Visconti
authors.forename: M
authors.initials: M
authors.lastname: Solfrizzo
authors.forename: M B
authors.initials: MB
authors.lastname: Doko
authors.forename: A
authors.initials: A
authors.lastname: Boenke
authors.forename: M
authors.initials: M
authors.lastname: Pascale
mesh_terms: D002264:Carboxylic Acids / Q000032:analysis / Q000528:radiation effects*; D002274:Carcinogens, Environmental / Q000032:analysis / Q000528:radiation effects*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004355:Drug Stability; D004356:Drug Storage; D005506:Food Contamination / Q000032:analysis; D037341:Fumonisins; D005720:Gamma Rays; D013696:Temperature; D003313:Zea mays / Q000528:radiation effects*
chemical_list: D002264:Carboxylic Acids; D002274:Carcinogens, Environmental; D037341:Fumonisins; C056934:fumonisin B2; C056933:fumonisin B1