Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 140, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.indcrop.2019.111657
Keywords
Biomass feedstock; Cell wall; Enzymatic hydrolysis; HPAC pretreatment; Lignin
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Funding
- National Institute of Science and Technology for Bioethanol (INCT-Bioethanol) [FAPESP 2008/57908-6, 2014/50884-5, CNPq 574002/2008-1, 465319/2014-9]
- CAPES fellowship
- CNPq fellowship
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Biomass delignification is a crucial condition for the effective production of fermentable sugars from lignocellulosic materials. Here, an effective method was used to pretreat lignocellulosic materials using hydrogen peroxide-acetic acid (HPAC) solution. The pretreatment of maize straw, sugarcane bagasse and eucalyptus bark with HPAC removed 45 to 75% of lignin and improved from 2.1 to 20.8-fold the saccharification process. Delignification caused by HPAC increased the enzyme adsorption capacities of pretreated substrates from 2.6 to 7.1-fold. The HPAC treatment clearly removes furfurals of the hydrolytic medium, contributing to more efficient ethanol fermentation. The applied method can be a useful alternative to improve biomass saccharification, reduce costs and increase the production of second-generation bioethanol.
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