Aflatoxin B1, zearalenone and deoxiynivalenol production by Aspergillus parasiticus and Fusarium graminearum in interactive cultures on irradiated corn dernels.
ETCHEVERRY, M., MAGNOLI, C., DALCERO, A., CHULZE, S. and LECUMBERRY, S.
Mycopathologia 142: 37 – 42.
1998
บทคัดย่อ
The influence of inoculum size on the productuion of aflatoxin B1 (AFB1), zearalenone (ZEA) and deoxynivalenol (DON) was determined when Aspergillus parasiticus NRRL 3000 and Fusarium graminearum ITEM 124 were cultured alone and in pairs on irradiated corn dernels at 280C and 0.97 water activity. When A.parasiticus was co – inoculated with F. graminearum both at the same inoculum size (106 spores/mL), AFB1 production decreased by 60, 72 and 56% at 10, 20 and 35 days of incubation, respectively. When the A.parasiticus inoculum was 103 spores/ mL and F.graminearum 106 spores/mL, the percentage of inhibition of AFB1 was around 99% during all the incubation. When the A.parasiticus inoculum was 106 spores/mL and F.graminearum 103 spores/mL, AFB1 productuion decreased by 80, 94 and 86% at 10, 20 and 35 days of incubation respectively. In paired cultures, AEA and DON production by F.graminearum was not significantly affected regardless of the spore concentrations at inoculation.