Inhibitory effect of cyclic terpenes (limonene, menthol, menthone and thymol) on Fusarium verticillioides MRC 826 growth and fumonisin B1 biosynthesis

DAMBOLENA, JS; LOPEZ, AG; ZYGADLO, JA; CANEPA, MC; THEUMER, MG; RUBINSTEIN, HR

Elsevier

Año: 2008 vol. 51 p. 37 - 37

font face="ArialUnicodeMS" size="2"> The minimum inhibitory concentration (MIC) of cyclic terpenes (limonene, menthol, menthone and thymol) against Fusarium verticillioides MRC 826 were assessed, by using the semisolid agar antifungal susceptibility (SAAS) technique. Limonene, menthol, menthone and thymol were evaluated at final concentrations of 25, 50, 75, 150, 200, 250, 500 and 1000 ìL of culture medium. Limonene and thymol showed the highest inhibitory effects on F. verticillioides development. Thus, the effects of monoterpenes on FB1 biosynthesis were evaluated by using corn grain (Zea mays) as substrate. The monoterpenes were inserted on maize one day before inoculation with a conidial suspension of F. verticillioides to give final concentrations of 75 ppm. At this concentration, thymol was the most active inhibitor on FB1 biosynthesis.