Abstract—Fusarium langsethiae has been isolated from infected oats, wheat and barley, mainly, in Central and Northern Europe. This species has been implicated in the production of high levels of T-2 and HT-2 toxins in cereals, especially in oats. Cereals and their by-products are basic foods in human and animal diet. They are a primary source of components that are beneficial to human and animal health. There are limited data available regarding the host sensitivity and effect of environmental variables such as relative humidity and temperature on the biosynthesis of T-2 and HT-2 by this species. The aim of this work was to know the effect of cereal type and environmental conditions on production of T-2 and HT-2 by different isolates of F. langsethiae isolated from cereals in order to determine the effect of host and physical, chemical or biological variables, associated to cereal technology, in the accumulation of T-2 and HT-2 in the grain. Toxins were analyzed by an optimized HPLC method. In general, the highest T-2 and HT-2 levels were found in oat grains, followed by barley, wheat, corn, sorghum, rye and rice grains incubated at 25 ºC and 0.98 aw. At 20ºC and 0.95 aw toxin levels were very low in all the assayed cereals. ANOVA showed that T-2 and HT-2 production by F. langsethiae were significantly affected (P > 0.001) by temperature, aw and type of cereal.
 

Index Terms—cereals, T-2 and HT-2 toxins, temperature, relative humidity, Fusarium langsethiae

Cite: Eva M. Mateo, José V. Gómez, David Romera, Andrea Tarazona, José V. Gimeno-Adelantado, Rufino Mateo-Castro, and Misericordia Jiménez, "Comparative Study of Different Cereals as Substrates for T-2 and HT-2 Production by Fusarium langsethiae," International Journal of Food Engineering, Vol. 4, No. 1, pp. 40-45, March 2018. doi: 10.18178/ijfe.4.1.40-45