BioChem - DOS

Analysis of by-product formation and sugar monomerization in sugarcane bagasse pretreated at pilot plant scale: Differences between autohydrolysis, alkaline and acid pretreatment

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

van der Pol, E.; Bakker, R.; van Zeeland, A.; Sanchez Garcia, D.; Punt, A.; Eggink, G.

Sugarcane bagasse is an interesting feedstock for the biobased economy since a large fraction is polymerized sugars. Autohydrolysis, alkaline and acid pretreatment conditions combined with enzyme hydrolysis were used on lignocellulose rich bagasse to acquire monomeric. By-products found after pretreatment included acetic, glycolic and coumaric acid in concentrations up to 40, 21 and 2.5g/kg dry weight bagasse respectively. Alkaline pretreated material contained up to 45g/kg bagasse DW of sodium. Acid and autohydrolysis pretreatment results in a furan formation of 14g/kg and 25g/kg DW bagasse respectively. Enzyme monomerization efficiencies of pretreated solid material after 72h were 81% for acid pretreatment, 77% for autohydrolysis and 57% for alkaline pretreatment. Solid material was washed with superheated water to decrease the amount of by-products. Washing decreased organic acid, phenol and furan concentrations in solid material by at least 60%, without a major sugar loss.

2015

Elsevier Applied Science

0960-8524

181

pp.114-123

10.1016/j.biortech.2015.01.033

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART71577942

Lignocellulose; Pretreatment; By-products; Analysis; Inhibitors