CONICET | Buscador de Institutos y Recursos Humanos

The objectives of this investigation were to evaluate the antifungal and antimycotoxigenic propertiesof peanut skin extracts (PSE) against Fusarium verticillioides. The PSE were prepared by a multisolventextraction procedure, and the activity on growth parameters and fumonisin B1 (FB1) production of thethree PSE was explored at different concentrations on potato dextrose agar and in artificially infectedmaize kernels, respectively. The results demonstrated that all PSE had a significant influence on growthrate or lag phase of F. verticillioides. The yellow and purple (250?500 g ml−1) extracts decreased growthrate, whereas brown extract extended the lag phase. Only the yellow extract at 62.5 g ml−1 was able toaffect both growth rate and lag phase. With respect to mycotoxin production a significant stimulation onFB1 production was observed with purple (62.5 g ml−1) and brown (250 g ml−1) extracts. In contrast,a significant decreased in FB1 was observed at 62.5 g ml−1 of yellow extract. These findings showedthat natural compounds from PSE possess inhibitory effects on F. verticillioides growth and mycotoxinproduction. Thus, PSE could be use as an alternative to minimize fungal contamination.