Artículos de revistas
CONTROL OF T-2 TOXIN IN FUSARIUM LANGSETHIAE AND GEOTRICHUM CANDIDUM CO-CULTURE*
Autor
ELIDA GASTELUM-MARTINEZ
Institución
Resumen
Due to contamination of barley grains by Fusarium langsethiae, T-2 toxin can be present in the brewing
process. It has been observed that the presence of the yeast Geotrichum candidum during malting can
reduce the fi nal concentration of this mycotoxin in beer. In this work, a co-culture method was carried out
for both microorganisms in order to evaluate the effect on T-2 mycotoxin concentration in comparison
with the pure culture of F. langsethiae in the same conditions. The microbial growth of both microorganisms
was assessed using three different methods: dry weight, DOPE-FISH, and DNA quantifi cation. In coculture,
both microorganisms globally developed less than in pure cultures but G. candidum showed a
better growth than F. langsethiae. The concentration of T-2 was reduced by 93 % compared to the pure
culture. Hence, the interaction between G. candidum and F. langsethiae led to a drastic mycotoxin reduction
despite the only partial inhibition of fungal growth.