Evaluation polymers of vegetable origin in the detoxification of the hemicellulose hydrolysate from sugarcane bagasse and purification of the xylotil obtained by fermentation

• Grant number: 05/59496-9
• Support Opportunities: Regular Research Grants
• Start date: April 01, 2006
• End date: May 31, 2008
• Field of knowledge: Biological Sciences - Microbiology - Applied Microbiology
• Principal Investigator: Maria das Graças de Almeida Felipe
• Grantee: Maria das Graças de Almeida Felipe
• Host Institution: Faculdade de Engenharia Química de Lorena (FAENQUIL). Secretaria de Desenvolvimento Econômico (São Paulo - Estado). Lorena , SP, Brazil

Abstract

The production of xylitol by means of biotechnology is limited by the presence of compounds considered toxic to the action of the yeast, such as phenols, acetic acid, furfural, 5-hydroxymetylfurfural and heavy metals. To overcome this problem, the present work proposes to study the use of vegetable tannin-based polymers in the treatment of sugarcane bagasse hydrolysate, such as Bioclin and Acquapol ww, which possess a highly flocculent action. The hydrolysate treated with the polymers which demonstrates the greatest removal of toxic compounds and the least loss of xylose will be used for fermentations with a view to its evaluation as a means for obtaining xylitol. In addition to the treatment of the hydrolysate, this work proposes to study the use of the Biosugar polymer in the purification of the fermented medium, given that this stage of the process is still very little researched. Both polymers used in the work are natural, biodegradable and offer low cost. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILVA-FERNANDES, T.; SANTOS, J. C.; HASMANN, F.; RODRIGUES, R. C. L. B.; IZARIO FILHO, H. J.; FELIPE, M. G. A.. Biodegradable alternative for removing toxic compounds from sugarcane bagasse hemicellulosic hydrolysates for valorization in biorefineries. Bioresource Technology, v. 243, p. 384-392, NOV 2017. (05/59496-9)