INVESTIGADORES
RODRIGUEZ Fernanda Mariana
congresos y reuniones científicas
Título:
PHENOLIC ALDEHYDES AND FURFURAL DEGRADING FUNGI FOR THE BIOLOGICAL PRETREATMENT OF LIGNOCELLULOSIC BIOMASS.
Autor/es:
ZANELLATI A; SPINA F; RODRIGUEZ FERNANDA; MARTIN MARIANA; DINUCCIO E; VARESE GC; SCARPECI TELMA
Reunión:
Congreso; SAIB SAMIGE 2020; 2020
Resumen:
Lignocellulosic biomasses, such as agricultural and forest residues, represent abundant, renewable, and low-cost resources to produce biofuels, chemicals, and polymers. The recalcitrant nature of lignocellulosic biomass is the major issue for its exploitation in biotechnological processes. Physicochemical pretreatments are used to improve the bioconversion of this type of biomass, but they could generate toxic by-products, as furan and phenols, that could inhibit several biological processes. In this study, 40 fungal strains were analyzed for their capability to grow with different concentrations of furfural (F) derived from dehydration of hemicellulosic carbohydrates, and the lignin derivatives vanillin (V), 4-hydroxybenzaldehyde (H), and syringaldehyde (S). Growth performance of fungal strains was analyzed at different concentrations of the inhibitors, as singlemolecules or mixes of them. The high-throughput screening performed with the 40 fungal strains confirmed the strong toxicity of phenolic aldehydes and furfural. Furthermore, results showed that in the presence of single-molecule solutions, the growth inhibition depends not only on the nature and concentration of the assayed compounds but also on the presence of glucose asco-substrate. Byssochlamys nivea MUT 6321 showed promising growth performance when the inhibitors were used as single molecules and it was the only fungus that could grow when the four molecules were simultaneously present in culture media.