Biological detoxification of different hemicellulosic hydrolysates using Issatchenkia occidentalis CCTCC M 206097 yeast

• Published in: Journal of industrial microbiology & biotechnology 2011, Vol.38 (1), p.199-207
• Main Authors: Fonseca, Bruno Guedes, Moutta, Rondinele de Oliveira, Ferraz, Flavio de Oliveira, Vieira, Emílio Rosa, Nogueira, Andrei Santini, Baratella, Bruno Fernandes, Rodrigues, Luiz Carlos, Hou-Rui, Zhang, da Silva, Sílvio Silvério
• Format: Article
• Language: English
• Subjects: Agricultural production; Alternative energy sources; Bagasse; Biochemistry; Bioinformatics; Biological and medical sciences; Biomass; Biomass energy; Biomedical and Life Sciences; Biotechnology; Biotransformation; Carbohydrates - chemistry; Cell growth; Cellulose - metabolism; Coffea - chemistry; Detoxification; Experiments; Fundamental and applied biological sciences. Psychology; Furans - metabolism; Genetic Engineering; Glucose; Hydrolysis; Inorganic Chemistry; Issatchenkia; Life Sciences; Lignocellulose; Microbiology; Microorganisms; Original Paper; Polysaccharides - metabolism; Saccharomyces cerevisiae; Saccharomycetales - metabolism; Saccharum - chemistry; Studies; Sugar; Sugarcane; Yeast; Yeasts; Zea mays - chemistry
• ISSN: 1367-5435; 1476-5535
• DOI: 10.1007/s10295-010-0845-z

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.