Bioactive Compounds Obtained from Oilseed By-Products with Subcritical Fluids: Effects on Fusarium verticillioides Growth

BODOIRA, ROMINA; VELEZ, ALEXIS; MAESTRI, DAMIÁN; HERRERA, JIMENA

Waste and Biomass Valorization

Springer Nature

Año: 2019 p. 1 - 12

1877-2641

Recovery of bioactive compounds from wastes is gaining interest because they could add value to by-products arising from,for example, the oil extraction processes. In this work, green solvent extraction (water/ethanol under sub-critical conditions)was used to obtain bioactive compounds from peanut, sesame and pistachio agro-industrial by-products. Extracts were analyzedin their overall chemical composition and tested on growth, ergosterol and fumonisin FB1 production by Fusarium verticillioides. The efects of the extracts on fungal growth rate and biochemical markers were not univocal, and could beassociated to diferences in their chemical proiles. Extracts obtained from peanut skin?composed mainly by monomeric anddimeric lavonoids?caused signiicant reductions in fungal growth rate but increased FB1 production. Extracts from sesameseeds?dominated by furofuran-type lignans?did not have a clear inhibitory efect on growth rate but strongly reduced bothFB1 and ergosterol production. Extracts from pistachio nuts?characterized by monomeric lavonoids and gallic acid derivatives?showed minor efects on both fungal growth rate and biochemical markers. Sub-critical luid extraction of peanutskin and defatted sesame seeds may provide an eicient method to obtain extracts rich in phenolic and lignan compoundswith potential use as antifungal agents.