Biomimetic sistems applied to enzimatic hydrolise of lignocellulosic material

• Grant number: 12/07412-0
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: October 01, 2012
• End date: October 31, 2015
• Field of knowledge: Biological Sciences - Biology
• Principal Investigator: Andre Luis Ferraz
• Grantee: Omar Antonio Uyarte Noriega
• Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil
• Associated scholarship(s): 13/04481-3 - Fenton reaction applied to lignocellulosic materials and their effect on the enzymatic hydrolysis, BE.EP.DD

Abstract

Several reports available in literature show that the partial removal of lignin is useful to improve the enzymatic saccharification process of lignocellulosic materials. In this project, the hypothesis is that biomimetic systems can be used as auxiliary processes at lignin removal step. However, previous results indicate that despite the biomimetic systems demand mild reaction conditions (suitable with enzymatic saccharification stage), they are less effective than conventional chemical and chemothermomechanical pretreatments. Thus, this project aims to evaluate the application of biomimetic systems in the delignification of materials submitted to enzymatic hydrolysis of the polysaccharide fraction.The originally reduced lignin material (sugarcane bagasse and eucalyptus) will be submitted to a chemothermomechanical pretreatment with alkaline sulfite, in either optimal or suboptimal conditions. Afterwards, it will be used a biomimetic system simultaneously with an enzymatic hydrolysis. It is expected that biomimetic systems remove a small portion of lignin and increase the yield of the enzymatic hydrolysis. The previously described biomimetic system will simulate the action of manganese-peroxidase, which mechanism produces organoperoxide radicals that can work as initiators of the delignification process. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

NORIEGA, Omar Antonio Uyarte. Oxidative-biomimetic systems applied to enzymatic hydrolysis of lignocellulosic materials. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de Lorena (EEL/ASDI) Lorena.