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Type: Artigo
Title: n-Butanol production by Saccharomyces cerevisiae from protein-rich agro-industrial by-products
Author: Santos, B.A.S.
Azambuja, S.P.H.
Ávila, P.F.
Pacheco, M.T.B.
Goldbeck, R.
Abstract: n-Butanol is a renewable resource with a wide range of applications. Its physicochemical properties make it a potential substitute for gasoline. Saccharomyces cerevisiae can produce n-butanol via amino acid catabolic pathways, but the use of pure amino acids is economically unfeasible for large-scale production. The aim of this study was to optimize the production of n-butanol by S. cerevisiae from protein-rich agro-industrial by-products (sunflower and poultry offal meals). By-products were characterized according to their total protein and free amino acid contents and subjected to enzymatic hydrolysis. Protein hydrolysates were used as nitrogen sources for the production of n-butanol by S. cerevisiae, but only poultry offal meal hydrolysate (POMH) afforded detectable levels of n-butanol. Under optimized conditions (carbon/nitrogen ratio of 2 and working volume of 60%), 59.94 mg/L of n-butanol was produced using POMH and glucose as substrates. The low-cost agro-industrial by-product showed great potential to be used in the production of n-butanol by S. cerevisiae. Other protein-rich residues may also find application in biofuel production by yeasts.
Subject: Saccharomyces cerevisiae
Country: Brasil
Editor: Springer
Rights: Fechado
Identifier DOI: 10.1007/s42770-020-00370-6
Date Issue: 2020
Appears in Collections:FEA - Artigos e Outros Documentos

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