Biological detoxification of different hemicellulosic hydrolysates using Issatchenkia occidentalis CCTCC M 206097 yeast |
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Authors: | Fonseca Bruno Guedes Moutta Rondinele de Oliveira Ferraz Flavio de Oliveira Vieira Emlio Rosa Nogueira Andrei Santini Baratella Bruno Fernandes Rodrigues Luiz Carlos Hou-Rui Zhang da Silva Slvio Silvrio |
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Institution: | 1.Deptamento de Biotecnologia Lorena, Universidade de São Paulo/Escola de Engenharia de Lorena, Lorena, São Paulo, 12.602-810, Brazil ;2.Universidade Federal Fluminense-UFF, Volta Redonda, Rio de Janeiro, Brazil ;3.Phytochemical Department, Guangxi Institute of Botany, The Chinese Academy of Sciences, 541006, Guangxi, People’s Republic of China ; |
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Abstract: | This work had as its main objective to contribute to the development of a biological detoxification of hemicellulose hydrolysates
obtained from different biomass plants using Issatchenkia occidentalis CCTCC M 206097 yeast. Tests with hemicellulosic hydrolysate of sugarcane bagasse in different concentrations were carried
out to evaluate the influence of the hydrolysate concentration on the inhibitory compounds removal from the sugarcane bagasse
hydrolysate, without reduction of sugar concentration. The highest reduction values of inhibitors concentration and less sugar
losses were observed when the fivefold concentrated hydrolysate was treated by the evaluated yeast. In these experiments it
was found that the high sugar concentrations favored lower sugar consumption by the yeast. The highest concentration reduction
of syringaldehyde (66.67%), ferulic acid (73.33%), furfural (62%), and 5-HMF (85%) was observed when the concentrated hydrolysate
was detoxified by using this yeast strain after 24 h of experimentation. The results obtained in this work showed the potential
of the yeast Issatchenkia occidentalis CCTCC M 206097 as detoxification agent of hemicellulosic hydrolysate of different biomass plants. |
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