BioChem - DOS

Biorefining strategy for maximal monosaccharide recovery from three different feedstocks: Eucalyptus residues, wheat straw and olive tree pruning

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Silva-Fernandes, T.; Duarte, L.C.; Carvalheiro, F.; Marques, S.; Loureiro-Dias, M.C.; Fonseca, C.; Girio, F.

This work proposes the biorefining of eucalyptus residues (ER), wheat straw (WS) and olive tree pruning (OP) combining hydrothermal pretreatment (autohydrolysis) with acid post-hydrolysis of the liquid fraction and enzymatic hydrolysis of the solid fraction towards maximal recovery of monosaccharides from those lignocellulose materials. Autohydrolysis of ER, WS and OP was performed under non-isothermal conditions (195-230<SUP>o</SUP>C) and the non-cellulosic saccharides were recovered in the liquid fraction while cellulose and lignin remained in the solid fraction. The acid post-hydrolysis of the soluble oligosaccharides was studied by optimizing sulfuric acid concentration (1-4%w/w) and reaction time (10-60min), employing a factorial (2<SUP>2</SUP>) experimental design. The solids resulting from pretreatment were submitted to enzymatic hydrolysis by applying commercial cellulolytic enzymes Celluclast&reg; 1.5L and Novozyme&reg; 188 (0.225 and 0.025g/g solid, respectively). This strategy provides high total monosaccharide recovery or high glucose recovery from lignocellulosic materials, depending on the autohydrolysis conditions applied.

2015

Elsevier Applied Science

0960-8524

183

pp.203-212

10.1016/j.biortech.2015.01.136

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART71650038

http://repositorio.lneg.pt/bitstream/10400.9/2905/1/BioresourceTechnology_Vol.183_203.pdf

Lignocellulosic materials; Sugar-based biorefinery; Autohydrolysis; Enzymatic hydrolysis; Chemical post-hydrolysis