Abstract
The potential to produce ethanol and xylitol from xylose by the macro basidiomycete Trametes membranacea was evaluated. All strains studied showed ethanol and xylitol production. The highest ethanol production of xylose was obtained by T. membranacea strain TM158/10 with 5.65 ± 0.21 g/L at pH 4 and 28 °C with 288 h of fermentation and 5.59 ± 0.05 g/L ethanol concentration at pH 5 and 24 °C with 360 h of fermentation. When the conversion was carried out using sugars generated from enzymatic hydrolysis of sugarcane bagasse, there were higher yields from 74 to 15% for ethanol and xylitol, respectively. Although the ethanol and xylitol production need to be optimized, this study showed for the first time the possibility of using T. membranacea for the simultaneous xylitol and ethanol production from pentose sugars, allowing for the possibility of using all released sugars during the hydrolysis of lignocelluloses.
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Acknowledgements
The authors acknowledge the Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul-FAPERGS (11/2063-3), the Conselho Nacional de Desenvolvimento Científico e Tecnológico-CNPq (472153/2013-7), the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-CAPES (3255/2013) the Universidade de Caxias do Sul (UCS) for financial support of this work. M. A. Reck thanks CNPq for the scholarship. S.R. thanks FAPERGS for the scholarship.
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Rissi, S., Fontana, R.C., Reck, M.A. et al. Production of ethanol and xylitol by Trametes membranacea. Bioprocess Biosyst Eng 41, 1017–1028 (2018). https://doi.org/10.1007/s00449-018-1931-2
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DOI: https://doi.org/10.1007/s00449-018-1931-2